Why do I think this is the best battery?

Рет қаралды 96,089

Күн бұрын

Let's compare the features of these popular server rack batteries and determine which is best for off grid solar? One is the Jakiper Pro from Orient Power, and the other is LifePower4 from Signature Solar.
LifePower4 battery from Signature Solar is my favorite for building up a large scale system. This is for people wanting to back-up their whole house, or go off grid completely. Combine 2 or more batteries inside the enclosed cabinet for a perfect setup. The 48V batteries from Signature Solar come in 2 versions, with or without a screen. I don't think the screen version is worth the extra cost if you plan to use a central shunt anyways.
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Signature Solar Affiliate Links:
LifePower4 battery without a screen: signaturesolar.com/eg4-lifepo...
EG4 battery with a screen: signaturesolar.com/eg4-ll-lit...
Server Rack cabinet with locking door, and copper busbars: signaturesolar.com/pre-assemb...
NEW! EG4 6kW inverter with transformer built in: signaturesolar.com/eg4-6k-off...
Growatt 5000ES inverter, I use a pair to run my house: signaturesolar.com/growatt-5k...
Battery Charger, CC/CV charger built for LiFePO4: signaturesolar.com/eg4-batter...
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Orient Power Affiliate Links:
5% Discount code: DAVIDPOZ
Powerwall battery is the newest version and hangs on the wall if you don't have a lot of floor space. The specs are the same as the server rack design, but in a vertical package: www.opsolarbattery.com/produc...
Orient Power Main Page: www.opsolarbattery.com/shop?r...
Jakiper PRO Battery: www.opsolarbattery.com/produc...
Rack with 4 batteries: Get a deal when buying the set of 4 with a steel rack: www.opsolarbattery.com/produc...
4 AWG (4 gauge) wires for connecting your batteries together: www.opsolarbattery.com/produc...
Rack alone: www.opsolarbattery.com/produc...
CC/CV charger for battery. (constant current, constant voltage)
www.opsolarbattery.com/produc...
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Amazon Affiliate Links:
Pike Industries 400A Busbar Red: amzn.to/3JN7NN7
Pike Industries 400A Busbar Black: amzn.to/3zLuSv2
“As an Amazon Associate I earn from qualifying purchases.”
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Videos:
Part 1: testing a single Jakiper battery. • Testing and Review of ...
Part 2: testing the full rack of Jakiper batteries: • Battery Banks - To Dai...
Busbar comparison: • Busbar Comparison Guide
Building the Watt meter: • Save Time and Hassle, ...
Disclaimer:
My videos are in no way intended to be instructional "how-to" lessons. I am simply documenting my project for informational purposes. Property damage, personal injury, or death may result, even when following manufacturer's instructions. I cannot be held liable for such damage or injury. It is YOUR OBLIGATION to ensure that you are complying with any local and federal laws as well as code and permit requirements.
David Poz, LLC

Пікірлер: 261

@petemarshall9212 Жыл бұрын

David Your in-depth testing with the two comparable server rack style batteries side by side was excellent. The information on using more than one battery best choice is very helpful. I was planning to go with the display on each battery, since a shunt is needed you can tie into network to see the balance of all the cells on one screen. The extra $200 for display per battery buys you one battery for every 8 or so batteries purchased. Keep up the great work. Thanks

@colormaker5070 Жыл бұрын

I just purchased 1 lifepower battery and signature solar rack after watching your video. I was going to build my own rack but your enthusiasm about the rack I just could not pass it up. Thank you for all the information.

@DavidPozEnergy Жыл бұрын

Glad to hear you are getting into it with quality components.

@Sanwizard1 Жыл бұрын

I disagree with the welded cells. If you get a bad cell, its much simpler to replace if its not welded in place.

@typxxilps Жыл бұрын

If you have a bad cell you have a warranty claim and it does not matter. After warranty you will usually not face a dead cell cause they will age together quite nicely at least our 8 year old winston cells from 2014 1500 cycles later and still over 90%. If a cell is broken you still can get these welded bus bars of by several methods. The safest is by cutting half of the connector to then drill a hole and connect it with a threaedstud from the new cell. Had seen a video on a domestic channel after he had damage one cell accidently and had to replace that single cell. He had done that but later decided to go for a 15S battery and removed it cause the age difference was too big and caused issues even though he had top balanced them before putting that 16th cell into it. Did not work out after 2,5 years.

@offgridliving4128 Жыл бұрын

What’s going to happen if 10 yeas down the road you need to replace a cell with a brand new one. Will the one cell play nicely with 15 used?

@user-dr2pg8fk2i Жыл бұрын

Good luck replacing a bad cell.

@user-dr2pg8fk2i Жыл бұрын

@@offgridliving4128 No

@amateurwizard Жыл бұрын

Agreed.

@JackButlerVideos Жыл бұрын

back to back great videos lately. well done and thanks!

@DavidPozEnergy Жыл бұрын

Your welcome. Thanks for checking them out.

@props-model-shop Жыл бұрын

Many people have been singing the praises of Signature Solar, but my luck with them has not been good at all... So. I Bought (3) of the Jakiper batteries last month using your discount code. Overall; I'm not too concerned with the under charged balancing. In time. they will balance themselves out. I feel that the Jakiper will serve my needs over the long haul much better than the EG4's. Made my own busbar for the SOK Server Rack which was Several Hundred Dollars cheaper than the EG4 Server Rack.

@DavidPozEnergy Жыл бұрын

I'm glad you built a system that works well for you. I also added busbars to my Jakiper rack (although I bought them).

@thestrapguy2006 Жыл бұрын

I dont have access to Sig Solar here in our country without heavy import charges so went Jakiper. Very happy with Jakiper batteries and support so far, plus they seem to be regularly improving their products. Nice to see two top quality alternatives.

@serverrackbatteryusa Жыл бұрын

@@thestrapguy2006 Thanks for your support.

@gvmiketodd Жыл бұрын

David, thank you so much for your insight and sharing your experiences. You've helped me make a very important decision.

@DavidPozEnergy Жыл бұрын

Glad to help. If you decide to buy one of these, it would be a big help to the channel if you could use the affiliate links in the description. Thanks.

@ForwardGuidance Жыл бұрын

Love your content David. Let's hope Jackiper is listening. These videos are no only a great resource for your subscribers, but also great feedback for the manufactures. I'm surprised the Jackipers are so much taller even though they are seemingly using the same cells - maybe they were concerned about too much heat buildup in a small box (we'll never know). EG4s are so off the chart awesome in every way. Thanks for the honest review/comparison.

@serverrackbatteryusa Жыл бұрын

Hi, we made it servicable by using bolts, and little more gaps on top terminals to ensure a safe distance, and the height is a standard 4U (44.2mmx4) pack as per Telecom Standard.

@frothysmatewho2321 Жыл бұрын

@@serverrackbatteryusa I personally prefer the bolt-on battery version. The other version is not user serviceable at all.

@STxFisherman Жыл бұрын

Thanks Dvid. Another great video with valuable info.

@paul.phillips Жыл бұрын

Good comparison. I am very happy with my EG4-LL batteries.

@capfisher6626 Жыл бұрын

Nice video!! Thanks David I enjoy your videos and I really appreciate you taking the time to express your knowledge and functionality of the batteries and solar that you have 😅

@jasoncr8419 Жыл бұрын

My 6-EG4 batteries took several week to complete passive top balancing using the BMS and EG4s 18amp charger. None of my batteries were even close to being top balanced/matched.

@serverrackbatteryusa Жыл бұрын

Try get some Jakiper Battery, you can compare and have a good video.

@solexxx8588 Жыл бұрын

The importance of top balance is often quoted from one or a few cycle tests. Most quality BMS will top balance over weeks/months for large battery banks and then maintain that balance over time. If the cells never balance, you either have a bad cell or a bad connection. Some rack batteries also include an active balance board that is only turned on by the BMS software when XX cell to cell deviation occurs.

@powerwall Жыл бұрын

professional

@ricardomarcelino8388 Жыл бұрын

You are right. But... Coming already balanced out of the box, you get 100% in the first day. Most people don't have that kind of knowledge, and of course it won't matter after a few cycles. But the difference is, the EG4 get over a 100% rated capacity, and Jakipper stay behind about 3%, not to mention 3,7V seems excessive to me...

@FulvioCarvalhido Жыл бұрын

Lá

@chuckb9867 Жыл бұрын

I love your videos I hope sometime you talk about brownout and what happens when these batteries run low I'm so happy when a new video comes out

@lennieadi Жыл бұрын

Great comparison David. Thanks.

@ricardomarcelino8388 Жыл бұрын

Good breakdown. Thanks David!

@mrgruisinge Жыл бұрын

Bought eight of the Lifepower4 batteries and have been very pleased with their performance. Have not got the software to run yet but still trying, bought a different laptop so we'll see this weekend.

@jamesshowalter6362 Жыл бұрын

Holler at tech support over here if you still need help

@ganjafarmer1572 Жыл бұрын

Can these be used w/out an internet connection ? I have a laptop, but no internet where I will using the batteries. Thank you for an answer.

@pryda1 Жыл бұрын

Love the channel it's been the inspiration to see what I can put together with the help of my son in-law who is an electrician. I'm anxious to get 2 48v 220AH Trophy batteries hooked in to the new EG4 Split phase 6000w inverter and 12 210W Solyndra Solar Panels from battery hookup.

@serverrackbatteryusa Жыл бұрын

Setup before Christmas.

@regularpit1508 Жыл бұрын

I like the Jakiper better as it does allow easier battery replacement if it lives long enough.

@eatatjoe69 11 ай бұрын

Super informative video. Thanks you!!

@WiSeNhEiMeR-1369 Жыл бұрын

HOWdy D-P, Thanks for the comparisons COOP ...

@williambryce8527 Жыл бұрын

Great video and I 2nd the Bus Bars as a needed configuration. Signature solar has great customer support out of TX.

@serverrackbatteryusa Жыл бұрын

They did great jobs.

@ThisRandomUsername Жыл бұрын

Hi David. Regarding the precharge resistor: a smaller resistor is fine if the BMS monitors the voltage of the load and only clicks in the contactor once it's up to a certain level. The 200W 10R resistor is actually underrated for the peak wattage (341W @ 58.4V) of the load, but that's not actually a problem because of the short time it is active for.

@serverrackbatteryusa Жыл бұрын

Good point, join our team.

@AveRage_Joe Жыл бұрын

Excellent Comparison David!!

@DavidPozEnergy Жыл бұрын

Thanks joe. Your Rhino battery looks pretty awesome too. The slim profile of yours certainly takes up less floor space than the server racks.

@ChrisDIYerOklahoma 4 ай бұрын

I have owned the EG4 LifePower4 batteries (six of them, with their rack) for 11 months. Using their BMS_test software I can monitor all six in real time. For top balancing, I have my SCCs set for 57.1v ABSORB and 55.1v FLOAT. I get 100% SOC on all six. Signature Solar's included busbars for the server rack required some modifications to make them safe. Other than that, the six batteries have been excellent.

@SnowyOwlPrepper Жыл бұрын

Excellent job.

@Roll2Videos Жыл бұрын

Great information 👍 thanks buddy

@offgridsolarpoweredaircond9574 Жыл бұрын

I like your videos. Thank your for your knowledge

@lasersbee Жыл бұрын

Thanks for the rundown on these 2 modules... There is also a $300.00 USD difference between the Modules.

@DavidPozEnergy Жыл бұрын

Yes. And the pricing gets better (per unit) as you buy more. I didn't get into the pricing in the video because the pricing changes so often (on the Jakiper) that it's better to check current prices when you are ready to buy.

@zippylocks Жыл бұрын

Thanks for all your hard work. I wish you had a good beginner and how to grow your solar system setup.

@DavidPozEnergy Жыл бұрын

What do you mean? Like a system just big enough to charge some cell phones in a black-out?

@zippylocks Жыл бұрын

@@DavidPozEnergy no I’m looking to setup a new system for my home and I need to start small and work my way up til I have one like yours. I don’t have the money to just pay outright for the whole setup. So what would you do to get started and grow a system like yours?

@clarencewiles963 Жыл бұрын

FYI what I did was go back in time on his KZfaq channel pulling out the information as he took years. I had the advantage to see what works or not. Equipment will change over time. Look at solar panels 100 watts 8 years ago at $500 to $600.

@DavidPozEnergy Жыл бұрын

OK, Gotcha. Well, If you have $3,000 USD to start, then I'd try this: 1 of the EG4 batteries and 1 of the EG4 inverters: signaturesolar.com/eg4-6k-off-grid-inverter-6000ex-48hv/?ref=4_rHcgZ9x-TiF- The actual cost of those two components is less than $3k, but you need to add wires and circuit breakers. You can start with just a battery backup, meaning you still buy from the grid but use the battery system only in a power outage. Then add some solar panels when you can. Once you have some solar coming in you can offset a few appliances and save money from the grid. After that, I'd buy a rack and second battery. The rack can fit 6 batteries, but you don't really need the rack until you have 2 or more. Once you outgrow this setup you can buy a second inverter (or third) and parallel the inverters together.

@SylwerDragon Жыл бұрын

Nice video David. I have few comments. 1. I don't think the capacity difference you mentioned has any meaning. If you are cycling from 0 to 100 every day..then there is something wrong with your system. So that doesn't matter much. 2. I fully agree with point you made about high of that battery. I don't think it is as simple as 6 to 4 because you can see there is clearly gap between battery packs. 3. I mostly agree about that bus bar you mentioned. You would have to invest some money to individual bas bar. It isn't big deal i think but I'm sure that battery rack doesn't have same price compared to two .. Because in first case you have it ready with bus bars and all that and in second you have just simple stand ..so that isn't almost comparable. In this they should improve to make better rack..but price would go up.. Rest i think you did excellent job to compare them. as I stated i don't think there is any big difference between those two and i think they should come up with option to not to have that LCD there or to have it as one master and just connection of cables to check rest BMS(and be doing this reduce complexity and costs)..but those are all clones of who knows what battery and BMS so i'm not sure if they do any R&D on this. These companies exist one year and then they just change name to new one ..That is how it is in China..unfortunately..

@serverrackbatteryusa Жыл бұрын

Advice noted by manfacturer.

@ABigGreenDragon 18 күн бұрын

Let's get a Discover AES Rackmount in your hands for evaluation!

@bobcole3852 Жыл бұрын

Great review!

@DennisWintjes2 Жыл бұрын

Thanks David for sharing. Like 255

@MyWasteOfTime Жыл бұрын

The EG4-LL batteries also have Dual Posts with a screen!

@serverrackbatteryusa Жыл бұрын

Yes, that one compare with JK48V100PRO is of much higher cost. And not serviceable.

@wayne8113 Жыл бұрын

Thanks David

@wim0104 Жыл бұрын

great job, thank you!

@thaddeustroyer Жыл бұрын

2 thingsyou failed to mention which I think are pretty important 1. EG4-LL has a 10 YEAR warranty NOT 5 year like the EG4-life power (so you get 5 more years of warranty and a screen) 2. EG4-LL has 2 posts on both the positive and negative and the EG4-Life power has just the 1post on each

@thaddeustroyer Жыл бұрын

Now its my turn to."fail to mention" I loved you comparison and testing. You have done so much for the solar community with all the hard work you have put into these DIY videos. Thank you very much and keep up the great work.

@mrf5347 Жыл бұрын

10 years / 5 years warranty, about $200, excellent point! Most things I buy expire shortly after the warranty.

@user-hg2tk3xj9y 3 ай бұрын

Currently got two Eg4 lifepower 4 48v bricked with a fault that should not have occurred so if they will not honor their warranty I was looking for an alternative and will consider the Jakiper, appreciate the review, it seems to have the features I would like.

@user-hg2tk3xj9y 3 ай бұрын

Took 3 days but got an old firmware update from them and it fixed the fault, note to self never update firmware unless you absolutely have to....

@danfitzpatrick4112 Жыл бұрын

Interesting with the QR codes. I checked them with the LifePo4 QR reader app and you were correct. Both are Ganfeng and from the same product line, however the dates show 10/02/2022 on the left and 08/03/2022 on the right one. Seems suspicious since we haven't made it to October 2022 yet. LOL

@DavidPozEnergy Жыл бұрын

LOL, wow that's funny.

@originaletponkarn Жыл бұрын

@@DavidPozEnergy Perhaps it is just another date-format? In case of it being DD/MM/YY that would equate to february and march 2022, both which would at least been in the past. =)

@soiledhalo2296 Жыл бұрын

@@originaletponkarn Most likely it IS a different date format. Once again another reason for the world to just adhere to ISO 8601 (YYYYMMDD)

@HighTechLab Жыл бұрын

You mentioned lower resistance for welded cells, but in order to weld the materials they must be like materials, thus meaning it’s aluminum. Aluminum has a higher resistance than the copper bar used on the bolted connection therefore the actual busbar resistance is a much bigger factor than the connection resistance and the bolted connection actually is better

@DavidPozEnergy Жыл бұрын

Hi High Tech Lab, Thanks for checking out my video. Certainly, I agree with you about the physical properties of aluminum vs. copper. I'm looking at the overall battery resistance. I think on your website you sell the SOK, which looks like a great battery. I've never tested the SOK battery so i don't know how it will compare with the Jakiper or EG4. I can only comment on the batteries I've personally tested. When I check the Ohms of the two batteries sitting on my workbench, the Signature Solar battery has less resistance than the Orient Power.

@nathankeeslar152 Жыл бұрын

@@DavidPozEnergy The only thing I don't like, is welded battery packs. if one fails, "you cant repair" copper buss bars for the win: repairable for the long Run. if the product cant be repaired, I don't want it... as always ill be going my own direction. thanks. keep up the good work, I love your videos.

@charlschuck6 Жыл бұрын

Your mic might have abit too much gain or too close to peak I though my speaker playing audio then test earbuds same result hope that helps or maybe you have a super deep voice 😊 😂 , like your video you teach us alo of Good things . I been working on my 12v power station I need way more wh on my storage and comparing I been missing out a lot w bigger voltaje on diy systems hopefully I buy one of this server batteries like the less amps draw inverter requieres .thanks again for sharing .

@karlsoffroad8609 Жыл бұрын

David, I'd be interested in buying the Jakipers,if you're not going to keep them.

@amazertechnologies1434 9 ай бұрын

Nice Job David. how can i get the capacity tester ?

@northidahodreaming5657 Жыл бұрын

well done!

@brentjohnson6654 Жыл бұрын

Thanks for this video, David. I am considering a server rack battery system for my house. I don’t know much about the Tesla power wall, but how does that compare? I assume cost is higher, but how about performance as well? Thanks again for your video, all the best from Texas!

@DavidPozEnergy Жыл бұрын

The Tesla powerwall is a pretty good package. It incorporates a battery and inverter in one package. However, once you buy into the Tesla platform, that's it. To my knowledge, you can't use any other brand of batteries or inverters, it must all be Tesla. I have a friend right now that has a Tesla powerwall, and he has been wanting to add battery capacity, but can't. Just something to consider.

@adir_1 4 ай бұрын

Thanks for the very informative video David! I've been researching server rack batteries and I'm pretty impressed with the EG4. The only thing I'm confused on is the charge voltage. When you charged it, what voltage did you use on your charger? The mean well 1200 watt I'll be using has 56.8v, 57.6v and 58.4v profiles. I would assume 58.4v for 3.65v per cell but I've read where some people think this is too high.

@DavidPozEnergy 4 ай бұрын

Hi adir_1, The maximum Voltage is 58.4V (3.65V/c), which you have correct. I usually charge to this level for my testing on camera and for top-balancing multiple batteries together. However, on a day-to-day basis, my charge controller is set to 56.0V (3.5V/c) (Bulk stage) which is plenty.

@clarencewiles963 Жыл бұрын

I’m looking to expanding my system, going from 120v to 240v over time. Not going in to details but add as I go. From backup to off grid. Using the grid as backup. With that said I’m putting together the information you’ve been putting together for my growth in my system.

@rdavis20 Жыл бұрын

David, Have you drawn a schematic of your perfect off Grid PE system. Including solar cells, inverters, controllers, batteries, racks, battery charge controllers, transformers, and distribution panels? Including brand names etc. you have tested so many components you must have thought about if money wasn’t a factor what you would want for your house. Of course you would not want to do maximum skimping activities. Washing and drying closes only between 1-4pm etc. taking baths only during daylight hours as examples.

@DavidPozEnergy Жыл бұрын

I have not drawn up a full schematic. If money wasn't a factor, I probably would buy 2 of the Schneider XW Pro. signaturesolar.com/schneider-conext-xw-pro-6-8kw-inverter-charger-48v-120-240v/?ref=4_rHcgZ9x-TiF- Schneiders system (inverters/PDP/Charge Controllers) looks like it could last decades.

@BullCheatFR Жыл бұрын

5:20 if you only have two batteries, you can connect them together, then connect one battery's positive to your load and the other battery's negative to your other load. This way they charge/discharge equally.

@wjbieber Жыл бұрын

David, Once again thank you for your input. Does option 2 have a battery case or enclosure?

@DavidPozEnergy Жыл бұрын

No. It doesn't really need one. Maybe just put it into a plastic tote to prevent a screwdriver from falling on it

@michaelhesse9981 Жыл бұрын

Great video, thanks! Could either of these be used for a mobile application (RV)?

@DavidPozEnergy Жыл бұрын

Yes. However, if you wanted to use them in a cargo area that might have water leaking in, I'd buy the waterproof version from Signature Solar: kzfaq.info/get/bejne/gpiWdZeL3NG7ooU.html

@wjbieber Жыл бұрын

David, Thank you for the exhaustive reply to my question. it is very helpful. I am in my early 70's and I am trying to figure all of this out without wasting my time and money. I will be using this system for emergency use only, grid down, EMP etc; Do you have any recommendations for a good 48v battery for my EG4 system that may be conservative in pricing? I just cant afford the Signature Solar option even though I like them.

@DavidPozEnergy Жыл бұрын

All the 48V 100Ah batteries start at $1500 and go up. If you are looking for a less expensive system, then here are two options: #1: AGM batteries. AGM is a type of lead acid that requires no maintenance. This is a very good option for you considering that your application is emergency use only. This means the battery will sit there in "float" mode 99% of the time. Then, when you have a blackout they can power the inverter. AGM's are very well suited to this situation. Here is an example: amzn.to/42rLo0H (amazon affiliate link). #2: Make your own Lithium. When I make a battery, I buy cells from Battery hookup, and add a BMS. Here is an example: buy two of these: batteryhookup.com/products/super-beast-module-with-48-headway-38120-hp-3-2v-8ah-24v plus one 48V BMS: batteryhookup.com/products/12v-lifepo4-smart-bms-w-low-temp-cutoff?variant=42745018286242 (select 16s LiFePO4 from the drop-down). This combination is about $545 (plus shipping) to make a 48V battery, @48Ah. Note, this is about half the capacity of the 100Ah batteries I review in this video. This means half the run-time of your fridge, or whatever you plan to backup in emergencies. But, you can always parallel more batteries later. My coupon code with Battery Hookup is DAVIDPOZ and that code gives you a discount and tracks the affiliate.

@shephusted2714 Жыл бұрын

good content!

@CoolMusicToMyEars Жыл бұрын

Screw terminals are best in maintaining battery over years when changeout a cell, Maybe because it reached higher voltage might be a tighten terminal issue, things that are heavy can work loose in transportation

@jasonsampson8253 Жыл бұрын

David Great Video! Do you think one of these units would last if instaled in a RV or Camper?

@DavidPozEnergy Жыл бұрын

Yes. Both should work fine, but I might lean to the Jakiper. There is soft padding between the cells and case, a type of EVA foam. I think that might be better for vibrations. However, if you can, I'd not go with a server rack battery. Instead look for a sealed battery like this: signaturesolar.com/eg4-wp-lithium-battery-48v-100ah?ref=4_rHcgZ9x-TiF- it is made for mobile applications.

@jasonsampson8253 Жыл бұрын

@@DavidPozEnergy Thank you!

@ambtipsandtricksbyfritz 10 ай бұрын

I have 3 Lifepower4 48v batteries in the 3 slot rack in my RV with 2 3000w LVM inverters with 2000w solar. It’s been running for 12 months without issues. Much more compact than Jakiper.

@wjbieber Жыл бұрын

This was an excellent review. Thanks for doing it. I am looking for an alternative to the Signature Solar batteries. I also have a question. David, I have a question maybe you can help with. I just purchased an EG4 3000w 48V all on one inverter from SIgnature Solar and I was wondering if I can connect Redodo 12V 100Ah LiFePO4 Battery (4PACK) to the EG4 all in one inverter and will the BMS communicate with the inverter? I'd like to do this because I can't afford the EG4 battery and the rediculous $285 shipping charge.

@DavidPozEnergy Жыл бұрын

Hi Bill, I'll answer this question here, since it's related to batteries, but I'll skip repeating the answer on the Chargeverter video. Thanks for watching my channel. I've never reviewed or worked with the EG4 3000W inverter, so I won't be able to answer any questions specific to that inverter. Instead, I'll focus my answer to your question on batteries. First, it's always best to buy a 48V battery for a 48V application. You are asking about series connecting 4x 12V batteries. This arrangement works, but will require a little more insight on your part. If you can at all purchase a 48V battery instead of series-connecting 4, please do so. Second, Before series connecting batteries make sure it is approved by the manufacture. In this case, I can see on their website: www.redodopower.com/products/12v-100ah-lifepo4-battery That they do approve this to be used in up to a 4p4s configuration, so you are good there. Third, When you receive the batteries allow them to all sit for a day in a steady temperature room. Keep them in a steady-state temperature for the duration of everything to follow. Fourth, Capacity test each battery independently. Write the capacity on the battery. Take note of the smallest battery capacity. For example, lets say you test all 4 and the smallest one is 99.8Ah. This smallest number is now the Ah capacity of the whole bank. For any settings you have to do in the future with a shunt, inverter, whatever, it's always the smallest number. Fifth, Top-balance all the batteries together. This means to parallel all 4 batteries together by wiring the positives together, then the negatives together. This makes a 12V 400Ah battery. Charge this up to the maximum allowed by the manufacture (usually 14.4V). Let sit a day. Sixth, wire in series to make your 48V, 100Ah battery. Set your charging and discharging parameters on your inverter/charge controllers conservatively. This might mean, set your charging to 56.0V, and your low-Voltage cutoff to 48.0V. You might miss out on a couple Ah by doing this, but you will keep from causing one BMS to shut down in the string of 4. You want all the BMS's to stay together. seventh, once a year remove the 4 batteries from the system. Wire them in parallel and re top-balance them together again. Once a year is usually enough. Good Luck, David

@kenimrich8798 Жыл бұрын

I believe buss bars need to be flexible to accommodate thermal expansion due to heating during charging and discharging cycles. Welded bars are rigid, and therefore, they will stress the posts on the battery as the bar expands and contracts during thermal cycles.

@DavidPozEnergy Жыл бұрын

The welded bars have a bend (hump) in the middle that allows for thermal expansion. The cheaper batteries have straight busbars.

@oogie-boogie Жыл бұрын

hay david,, in this vid you were saying try to keep the charging to 1/2 c ,, could you tell us how to figure out what a c rate is and how to figure it out?,,, ive been trying to figure out what 0.7c would be on my setup.... great vid buy the way

@DavidPozEnergy Жыл бұрын

Sure. Sorry I probably should have defined it in the video. These batteries are 100Ah. If you charge it at 100 Amps, that's a 1C rate. If I charge it at 70 Amps, that's 0.7C. The math is easy in this example, LOL. When I help people design off-grid systems I try to keep the battery to a 1/2 C rate (0.5C). This is universal whether discussing 12V, 24V, 36V, or 48V systems. In my personal build, I have 10kW of inverters, and 12kW of solar panels. So I would take the larger of the two. 12,000W of solar divided by 48V (the low Voltage cutoff of my inverters, so the lowest Voltage my pack would ever be) = 250 Amps. 250A/0.5C=500Ah battery at a minimum. Since my battery bank is 600Ah, I good to go.

@typxxilps Жыл бұрын

Could you do a video about the resistor topic in general? i wonder why that is not part of the BMS . I can not be connected always cause the resistor would burn an awfull lot, only for the first time the battery will be connected, so it should be part of the hybrid inverter which it isnt at least for PowMr and Growatt we had.

@DavidPozEnergy Жыл бұрын

The EG4 battery has a dedicated driver board for the resistor. As soon as the capacitors are charged, the driver board disconnects the resistor.

@SuperBrainAK Жыл бұрын

@@DavidPozEnergy I think the extra inductor coils on the Jakiper BMS are actually part of some kind of buck converter pre charge system. That is actually better than a reistor because you can control the amount of current and it will operate more efficiently to charge up the capacitors, instead of wasting the voltage difference in heat. Soemone needs to tear a BMS apart and look alot closer to see if that is the case. It would be cool if it was.

@jonjohns8145 Жыл бұрын

I'm sorry .. I still can't get over David's Grizzly Adams look .. 😆

@DavidPozEnergy Жыл бұрын

LOL.

@schwinnminibike 11 ай бұрын

after watching your video i see a strong point of why a tesla firewall is superior.. lolz. Thanks for the video dave

@knarf3985 Жыл бұрын

hi can you always add another batterie, or do you have to make your decission before starting.

@DavidPozEnergy Жыл бұрын

With these batteries, you can add to them during the first few years of use and it won't hurt anything.

@eelbatteryofficial Жыл бұрын

Hi David, Do you want to DIY the 48V system?we hope you can test our 48V 16S DIY battery box.😀

@jjackson3240 Жыл бұрын

Standard top voltage for a LFP battery has normally been considered 3.65 volts in the past. Has something changed in the chemistry or advancement of knowledge that it is now considered 3.7 volts.

@DavidPozEnergy Жыл бұрын

3.65V is the maximum recommended cell voltage. The BMS on the Jakiper was programmed to shut down at 3.7V on any one cell.

@LacoVarga Жыл бұрын

Hello, @DavidPoz, are these batteries available also in the European Union? Thank you. :)

@alphabeta898 Жыл бұрын

So what I'm seeing from a diy is that if gyll dies your send it back and goodbye as for jakipur if the cells die you can replace them.

@omarescalante9125 Жыл бұрын

You're the best

@benkanobe7500 Жыл бұрын

When you did the capacity test, what was in the grey box with the Wh meter?

@DavidPozEnergy Жыл бұрын

I built that meter: Part 1: kzfaq.info/get/bejne/h5aRarOZrq60h2g.html Part 2: kzfaq.info/get/bejne/qbBdptxptNnVomQ.html

@benkanobe7500 Жыл бұрын

@@DavidPozEnergy Thanks! I am watching now

@bhbaker220 24 күн бұрын

Does the LifePower battery have fire suppression? Are the cells any different in the LL battery?

@DavidPozEnergy 23 күн бұрын

The newest version of the battery does have fire suppression built in. The newest version is here: signaturesolar.com/eg4-ll-s-48v-100ah-server-rack-battery/?ref=4_rHcgZ9x-TiF- Please use discount code DAVIDPOZ50OFF at checkout.

@ciciedee5474 Жыл бұрын

The one difference that is important to me is price. The battery prices are within pennies. The Jakiper comes with rack, SigSolar wants 500 dollars for the rack

@DavidPozEnergy Жыл бұрын

Yeah, it's fun to run the price out on a complete system. I think the Signature Solar comes out less if you look at having 6 batteries (30kWh) and bus bars. Of course, if your needs only require 20kWh then you can get away with just one rack from Orient Power instead of 2.

@onesimusiii Жыл бұрын

I was able to get 72 5 amp hr 12v batteries from my work when they replaced the batteries in the fire alarm system. I'm wanting to connect them into a power bank or several power banks. They are duracell 12-5 batteries with the flat tabs. What would be the best way to connect them and keep them 12v?

@DavidPozEnergy Жыл бұрын

That's a lot of small batteries. I think it's cool you want to give them a second life. When paralleling multiple batteries together, I suggest having an individual fuse for each battery. You might try buying some packs of in-line fuses, like these: amzn.to/3K8BD0C and use a 5A fuse in each. BTW, I'd personally try to keep the maximum discharge of each battery to 0.5C, or 2.5A per battery. You can then run a long bus bar along each side of the battery. These bus bars would be the main + and main - for each. This is assuming you are orienting them in a long straight line. The inline-fuse holders can jump from the positive terminal of each battery, to a small bolt/nut on the long bus bars. You only need an inline fuse on one side of the battery, usually the positive post. Good luck and stay safe.

@clarencewiles963 Жыл бұрын

After viewing a short video from Signature solar taking about not running over 60%. Did you make a mistake of removal the growatt?

@DavidPozEnergy Жыл бұрын

I test my equipment harder than recommended because I want to find flaws and then be able to report how it works back to you. Yes, if I had kept all 3 Growatts (15kW) then each inverter would have ran cooler and probably last longer. But now I get to push my inverters harder. I usually get up to 8kW each day when running the dryer, or all the air conditioners, or something. But, I'm pleased to say that they have never once shut down due to overload or overheating. That's a good thing.

@cjmagicaladventures6805 Жыл бұрын

David Poz, I am not entirely sure about the solar array connection. if I have 12 panels at 18v 200 watt, max amp 15a each. 4 panels together in series then three groups of four in parallel into a combiner box, I will need at least 10 guage wire to the 5kw inverter growatt. is that the best way to do it, or can I add more into one series for a higher voltage?

@DavidPozEnergy Жыл бұрын

Good job gathering some of the information from the panels. In addition to the panel data, you will also need to find the data on the charge controller. If you are using the same inverter I am (Growatt 5000ES) then there is a charge controller built in. The built-in charge controller has a maximum PV Voltage of 450V, and max 18 Amps. You stated your panels are "18v". I'll assume that is 18 Voc (Volts Open Circuit). You will need to correct the following math if this is an incorrect assumption. You will also need to look up your areas temperature adjustment. Solar panels will put out a higher Voltage the colder they are. For example, my area has a 1.21 multiplier. This can be found in the code, but if you don't know your area, then the worst case scenario is a 1.25 multiplier. If we assume worst-case, then your panel series Voc must be less than or equal to 360V 360V/18V=20 This means you can series connect up to 20 panels into one Growatt 5000ES. Since you have 12, you are good. No need for any parallel connections, just one series string. Of course, if you are not using the same inverter you will need to adjust. This was just an example for you to follow so that you can look up your equipment specs and determine the best situation for you.

@cjmagicaladventures6805 Жыл бұрын

Dimensions:1956×992×40mmCells:monocrystallineTolerance: + 3%Short circuit current (Isc):8,64AWeight:26,5Kg Max. system voltage:1000VModel:ZMF0J300 Open circuit voltage (Voc):45,5VRated voltage (Vmp):37,0VCurrent at max.power(Imp):8,11A there is the specs on the solar panels I am looking at buying. 10 total. here is the specs on the inverter charger. Lithium Battery ActivationActive Lithium Batteries Battery Voltage48V Battery TypeLifepo4 Batteries, Lithium Batteries, Flooded Batteries, AGM Batteries, User Mode Load workout with Battery Inverter TypeHigh frequency Inverters PhaseSingle Phase AC output230Vac±5% Rated Load Power5500W Max Panel Input Volt450V-500V PV Terminal Charging Modebuild-in MPPT Solar Charge Controller Max Solar Panel Input Power6000W AC Charging Current80 Amps PV Charging Current100amps AC+PV Charging Current100Amps Wifi/Bluetooth ModuleWifi Module(Optional) WarehouseGER Warehouse, AUS Warehouse I am just wanting to be able to run 10 of those panels to make the system work for a combo battery backup and at some point maybe off grid.

@eddytotherow4917 Жыл бұрын

Hello David, I have been watching your videos for around 2 years I think. I have learned alot from you and thank you. I am 55 years old and didn't know how to subscribe to a channel on my computer but I found out that it was easy to subscribe on my phone. But anyway, I have watched you test so many different batteries, charge controllers, and inverters along with other stuff to combine to get 120v and 240v output. Just wanted to ask, with all of the different batteries and controllers and inverters that you have tested and owned, what have you done with all of the older stuff that you upgrade from? Do you sell the older stuff that you no longer use? And if so maybe we could get together and talk about me buying some of the items that you don't use anymore. I am completely off grid in a tiny house and have have 2 sets of 6 240watt Trina panels, each 6 are run in series then paralleled together. For a total of 12 panels to be under my max input for voltage and amperage. I have the growatt spf 3000 TL lvm-es and it's the 48v version. This setup has been working great for me except I was talked into buying some separate 12 AGM batteries because they were at a good price. At the time I hadn't done much research on different types of batteries. Then a few months ago I looked up the batteries that I had bought and called the manufacturer and talked with tech support. He told me that the batteries that I bought were ups batteries and that they were not really designed for solar storage. They have been working ok but I have noticed that they don't hold the capacity like a battery that was designed for solar. So that's why I was asking if you sold your older stuff that you no longer use. Mainly I would be interested in just 2 of the 48 volt 100 amp hour batteries or 3 would be even nicer. I would just like to get ones that are designed for solar and upgrade to the lithium batteries like the server rack ones. Please let me know if you do sell you older stuff that you no longer use. I know you said in this video that you upgraded to the newer Life power server rack batteries. So I figured it couldn't hurt to ask about your older ones. Thanks again for all of your videos, that is how I learned about solar. Thank you and take care.

@DavidPozEnergy Жыл бұрын

Thanks for watching my videos. I don't have anything to sell right now. I've sold a couple things in the past, but mostly to friends as I help them build a system.

@eddytotherow4917 Жыл бұрын

@@DavidPozEnergyThank you. Just thought I would ask. Thanks again for all of your video content. I wouldn't have learned solar without alot of your videos

@buixote Жыл бұрын

I know these things are supposed to be good for thousands of cycles, but wondering if folks can recommend replacement batteries for when rebuild-time comes...

@bigshowradio_550 Жыл бұрын

Completely off topic... would this work in a 48 volt golf cart?

@Wrensspeedshop Жыл бұрын

Hey there David. I had some questions I wanted to ask you pertaining to a growatt Grid tie inverter. I’m Not sure if we’re able to talk off-line somewhere else or if it has to be just on here. I’ve got the model number listed: Growatt 5kW Grid-Tie Inverter | MIN 5000TL-X I’ve currently got 15x 300watt panels along with 6x 130 panels which gives me more than enough power to help offset my electric bill etc. i also had some questions about batteries since I intend on producing more power then I will use. I would like the ability to store that excess power. I look forward to talking with you soon, Derek.

@DavidPozEnergy Жыл бұрын

I'm on Facebook, Davidpozenergy

@clevilbarnett1995 4 ай бұрын

Goodnight My EG4LUXPOWER 18K Hybrid inverter although it is set to solar-battery-grid with zero export. It still randomly exports power to the grid.Any idea on how this can be fixed.

@DavidPozEnergy 4 ай бұрын

I have not tested that inverter, sorry.

@davidpatrick1813 Жыл бұрын

You mention the QR codes... I can see the matt pattern is different. I tried to see if my iPhone could pick it up but it didn't. I ordered the 12V 400Ah EG4 and it hasn't shipped yet. Everyone seems to not open or comment on the 12V .... I will ask them later if I can add a rack later and so on ... if they should last years and years one should be able to. Have you seen there are some videos saying the BMS has/had issues ... shutting of even with under rated voltage spikes... I hope they fixed that.

@DavidPozEnergy Жыл бұрын

I have not tested the 12V server-rack battery. Sorry, I can't help with it.

@nopeleslie2176 Жыл бұрын

How would you add a string inverter to a house that already has a micro inverter system

@kordichb Жыл бұрын

Sol-ark ac couple

@hassankob6996 Жыл бұрын

Can you plz try to test the felicity lithuim battery 170 ah 8.7 kwh

@hamzahansari6900 Жыл бұрын

You didn't upload any update regarding the beetle ev?

@DavidPozEnergy Жыл бұрын

Nope. It was one problem after another. Still doesn't work.

@stephsoltesz6731 Жыл бұрын

David, while you did not / could not pull the BMS' from these two... Did they mention IF they are Passive or Active Balancing ? Big differene between the two types of balancing and Passive for 100AH and up is pretty much useless.

@DavidPozEnergy Жыл бұрын

Both BMS's use a resistor bank to burn off power from high cells. This is typically known as passive balancing. The resistors on the Jakiper are 40mA, and the resistors on the Signature Solar are 100mA.

@ernestoditerribile 4 ай бұрын

Can you also switch them in series, my inverter needs at least 140V

@DavidPozEnergy 4 ай бұрын

I don't think Signature Solar advises series connecting these. You have to make sure the manufacturer approves of that.

@ernestoditerribile 4 ай бұрын

@@DavidPozEnergy thanks for the info

@Dave_D. Жыл бұрын

Is there a recommended time frame for adding more batteries to a system? If, for example, I got a lifepower 100ah battery today, could I add another in 1 year w/o issues? 2 yrs? 5 yrs? 6 months? I would think the sooner the better, but with the expense, most ppl can't afford to complete a large system all at once.

@DavidPozEnergy Жыл бұрын

1 year is no problem at all. 5 years... maybe. It will depend how hard you pushed them. Once a battery drops below 90% SOH (stste of health) I'd say don't add more. That mark could be a few years, or 10 years depending on how the batteries were used.

@Dave_D. Жыл бұрын

@@DavidPozEnergy Thanks so much for the reply! I currently have (16) 6v FLA hooked up as 48v @ 440ah for ~ 21000wh. They are about done so I was looking to replace them w/ something that requires less maintenance and has a longer life such as the LiFePo. I'm not a heavy user of the batteries. In the summer, I can run most of my house 24/7....charging the batteries/running the loads in the morning/early afternoon, running the loads w/ the excess after they are charged, and then running off the batteries over night. Otherwise, in the winter, I only use it when the power goes out. I only use about 200kwh/mo when on grid. Doing the math, my current 21kwh FLA would cost ~$1600 to replace. And since FLA are delicate, I try not to run them below 80% so in reality that 21kwh gives me ~ 4200wh as 'available'. For $1600, I can get a 48v @ 100ah LiFePo, which will give me nearly 5kwh usable. I'd like to get a 2nd (or a 48v @ 200ah from the start) just to keep the % draw to a minimum so was wondering if it was necessary to go all at once, or if it could be done in steps. When they say '4000 charge cycles'....is that ANY discharge and recharge or full discharge? For example, if I use 1kwh and then recharge the next day vs using 5kwh and recharging the next day, are both considered 1 cycle? If I only had a 20% draw down, would that give me, let's say, 6000 cycles (as an example, I know nobody can give exact figures)?

@DavidPozEnergy Жыл бұрын

Most of the 48V lithium batteries will be LiFePO4. I've seen numbers from the manufacturer ranging from 3,000 cycles, to 10,000 cycles depending on the brand. What it really comes down to, is how are they used. Some manufacturers will use 120Ah cells, but only tell you that it's a 100Ah battery. This is so that as the battery ages and gets weaker, you still get 100Ah out of it. Those batteries will be advertised with a longer service life. But, let's say you bought one of the batteries I reviewed in this video. Both have 100Ah cells, and the BMS allows you to use all of it. If you set your parameters on your charger/inverter to only use 80% of the total, then it's the same difference. They will last about 20 years only using 80% of the range. The cycle counter is based on 100Ah in/out. I set my equipment to charge to 56V, and low-Voltage cutoff at 48V. This is probably 95% of the battery. Once I get my auto-generator to hook in, I'll have that kick on at 20% SOC, and that would prolong the life some more.

@Dave_D. Жыл бұрын

@@DavidPozEnergy Thanks so much for the info, I really appreciate it! If you're still checking, I have one more question...my charge controller is an older Xantrex MPPT60-150. It only has charge settings for lead acid. Are those settings typically good enough for LiFePo? Or would I need to use the 'custom' section to set up charging parameters? My Outback inverter crapped out and they were unwilling to offer help in troubleshooting it (I imagine one of the three boards is bad, but no idea how to determine which one), so I may be looking at some of the newer charge controllers and inverters in the future. Thanks again!!

@DavidPozEnergy Жыл бұрын

If the charge controller has an option for AGM, then that can usually be used with LiFePO4. But, if the only option is for FLA (flooded lead acid) then choose custom settings. There are plenty of great inverter and charge controller options available. P.S. If you plan on making a purchase, please use one of my affiliate links. It really helps out the channel.

@RobertKohut Жыл бұрын

The battery circuit breakers show they are 50Hz rated, not 50/60Hz or 60Hz. Is that okay? @8:25

@Bob.W. Жыл бұрын

Wouldn't a monitor in each battery help determine if the discharge rate or state of charge is out of balance between batteries?

@DavidPozEnergy Жыл бұрын

In a well designed and constructed solar system, the batteries will stay balanced together for years.

@whoguy4231 Жыл бұрын

The SS battery is amazing quality for the price! Prolly why they selling like hotcakes.

@TripGibson Жыл бұрын

I'd be happy if anyone can answer this question for me that has more battery knowledge than I do then I do which is very little.. I'm looking to buy a battery battery for my electric electric reservoir boat 48V and would like it to be a little over a 100 amp hours. Since I don't get to go fishing as much as I like to I would like to try to have the battery do double duty and use it around the house or for the garage when I'm not fishing. Any suggestions I would love to hear them.

@DavidPozEnergy Жыл бұрын

If you are looking for a 48V battery for a boat, then I made a video on a waterproof version: kzfaq.info/get/bejne/gpiWdZeL3NG7ooU.html

@TripGibson Жыл бұрын

@@DavidPozEnergy looks like they don't have the 48 version. No way to know if it's just out of stock because they don't show it at all. I do appreciate you answering my question.

@KD0CAC Жыл бұрын

Maybe I missed it - but does not seem like a proper comparison - did not top balance 1st battery --- but you did top balance the 2nd battery ? Thanks again

@DavidPozEnergy Жыл бұрын

When I was talking about top balancing, I was comparing both batteries straight out of the box. In my comparison I had not top balanced either one. I have a previous video on the Jakiper where I did several capacity tests, and after the first 2 tests I then manually top balanced just to try and hit the spec. The Signature Solar battery hit it's spec without me doing anything.

@KD0CAC Жыл бұрын

@@DavidPozEnergy Ok , my mistake thought one was & one wasn't ;)

@davidwilson2462 Жыл бұрын

David, why would these batteries be good for an “on-Grid” system?

@primozkert Жыл бұрын

Signature solar has 230v ac circut braker???

@Chad_N_Stacey_Hopson Жыл бұрын

IF YOU WERE TO BUY A NEW SYSTEM TODAY WITH WHAT YOU KNOW NOW, ALL-IN-ONE INVERTER, BATTERIES, AND PANELS..... WHAT WOULD IT BE?? I KNOW THAT I NEED A 24-30KWH SYSTEM, BUT I CAN'T AFFORD TO BUY IT ALL RIGHT NOW.... NOT UNLESS IT WOULD BENEFIT ME TO GO ALL IN AT ONCE.... I JUST NEED HELP, LOL... THANKS FOR ALL YOUR VIDEOS BROTHER

@DavidPozEnergy Жыл бұрын

If you need 30kWh of battery capacity, then I'd look at the Signature Solar battery and battery cabinet. You can start with just one battery (5.12kWh) and one battery cabinet. The battery cabinet can hold 6 batteries (30.72kWh). You can add 5kWh at a time over the next couple years. (links in description) As for the inverters, the all-in-one inverter/chargers make a ton of sense for the low cost up front. I suspect that they will last 5-7 years before needing replacement, but that's just a guess. Other brands out there like the Schneider, Victron, or SMA will probably last 20+ years. If money weren't a problem then jumping up to them would be nice, but they are a lot more money for a complete system. I like the idea of using an all-in-one at first. Get going and start saving on energy bills. But just know that after about 5 years you will need to buy something else. Signature Solar recently came out with a new all-in-one that gives you 120 and 240 Volts in one package, and it can be added to as your funds allow: signaturesolar.com/eg4-6k-off-grid-inverter-6000ex-48hv/?ref=4_rHcgZ9x-TiF- This is an affiliate link. Using affiliate links doesn't cost you any more, but does help out the channel.

@Chad_N_Stacey_Hopson Жыл бұрын

@@DavidPozEnergy I NOTICED THAT WHEN I GOT A QUOTE FROM SIGNATURE SOLAR THEY RECOMMENDED A COMPANY CALLED IRON RIDGE FOR THE GROUND MOUNT. I DON'T KNOW ANY OF THEIR PRICING BECAUSE I DON'T KNOW WHAT SIZE SYSTEM I'LL BE GOING WITH BUT I'M SURE IT'S NOT CHEAP..... DO YOU KNOW OF ANY OTHER GOOD COMPANIES THAT ARE REASONABLE ON GROUND MOUNT SETUPS? ALSO I ASKED ABOUT THAT SETUP BUT WAS TOLD BY MASON "The notable differences between this unit and the 6500EX is that this unit only has 1 PV input as opposed to 2, so you can't mix/match different types of solar panels into one inverter, and if one panel gets shade, all of your panels get shade. Other downside would be the transformer being louder in this unit than the transformerless 6500's. Other than that, these are really nice units, so if you're on the verge of needing that 3rd 6500EX, 3 of these units would be better so you're getting equal amperage to both legs."

@stefanvictor3873 Жыл бұрын

I scan QR and for both and not find cell on internet..?!

@igorkvachun3572 Жыл бұрын

Yes akb🔋 ⚡💡👍

@oxliverracing Жыл бұрын

with the welded batteries. this means when one of the cells fails you can't swap it out at home easily

@obtonwint5671 Жыл бұрын

David how much 12v battery can use ot bill 48v battery bank

@DavidPozEnergy Жыл бұрын

4 12V batteries in series makes a 48V battery.

@bill2292 Жыл бұрын

Hi david, no one ever talks in detail about the app these batteries (BMS) use. I am most familiar with Victron world which has great app, but never hear about these apps. No one will ever see if you have welded or bolted terminals, but they will see the app every day.

@DavidPozEnergy Жыл бұрын

Do you mean the computer software I used in the video to read the cell voltages?

@bill2292 Жыл бұрын

@@DavidPozEnergy Don't these EG4 batteries and Inverter Chargers have something like Victron Connect?

@jasoncr8419 Жыл бұрын

They don't talk about them because they are junk. Watchpower and the BMS program is rudimentary flaky and password protected.

@serverrackbatteryusa Жыл бұрын

LCD display is useful for routine checks.

@bill2292 Жыл бұрын

@@serverrackbatteryusa OK, but I need to monitor my entire system from farther than 3 feet, how do you do this??

@smacospasovski5123 Жыл бұрын

First to comment, thanks for the videos

@benkanobe7500 Жыл бұрын

What is a simple explanation (Will P. didn't make it simple enough) of "C Rating" so what is "half C rating" regarding charging current?

@DavidPozEnergy Жыл бұрын

The label on this battery says "51.2V, 100Ah". That means the battery capacity is 100Ah. If you multiply the capacity with the "nominal" Voltage, then you have the capacity expressed in Watt-hours (Wh). Anyway, half C rate means half the capacity, or 50A. If I write it out, it looks like this: 0.5C * 100Ah = 50A

@benkanobe7500 Жыл бұрын

@@DavidPozEnergy Got it!