SAVE Thousands - Build your own home solar battery backup!

Рет қаралды 83,557

Күн бұрын

LiFePO4 DIY 48V Battery Kit Assembly and Testing - EASY beginner DIY project.
See recommended battery options on my website: projectswithdave.com/batteries/
See more projects and get my FREE Solar Financial Calculator on my website ProjectsWithDave.com: projectswithdave.com/
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Referenced Products & Components:
BassenGreen Battery kit link (Often Out of Stock): www.basengreen.com/product/di...
Solar Supply House 304Ah Eve Cells in stock US: solarsupplyhouse.com/product/...
BassenGreen 304Ah Eve Cells: www.basengreen.com/product/us...
BMS Software link: drive.google.com/file/d/16hyQ...
Nader DC Circuit Breaker | 60V 200Amp: signaturesolar.com/nader-dc-c...
Active Start Soft Starter for the HVAC: amzn.to/3zfDlKm
Victron SmartSolar Charge Controller: www.currentconnected.com/prod...
Victron 48V MultiPlus-II UL1741: www.currentconnected.com/prod...
BigBattery-Discount battery resource: bigbattery.com/?ref=292 10% Off Coupon Code: dave10
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Sources for LiFePO4 batteries: projectswithdave.com/batteries/
Recommended sources for Discounted Solar Panels: projectswithdave.com/solar-pa...
Solar & Off Grid Materials & Components: projectswithdave.com/components/
Recommend Tools For Solar: projectswithdave.com/tools/
Inverter Solutions: projectswithdave.com/inverters/
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Best Value Source For Solar Panels and Batteries - Signature Solar ($50 off %500 or more discount Code "EVERYDAYDAVE"): signaturesolar.com/shop-all/s...
Quality & Service Source for Batteries and Inverters- Current Connected: www.currentconnected.com/?ref...
Great prices on clearance solar panels - SanTan Solar: www.santansolar.com/product-c...
Large orders and pallet pricing from SanTan, contact Alex (480-360-6203; or alexanderson@santansolar.com ) mention EverydayDave for 5% off.
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Disclaimers:
This video is for information purposes only, and does not constitute professional advice. Solar systems can and do involve dangerous electrical connections. If you do not have experience with electrical wiring, please seek professional support.
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Timestamps:
00:00 Intro
00:54 Battery Setup
03:46 Battery Assembly
10:34 Battery Configuration
11:44 Battery Connection
17:19 Battery Testing
20:24 Conclusion

Пікірлер: 250

@ProjectsWithDave 6 күн бұрын

See recommended battery options on my website: projectswithdave.com/batteries/ See more projects and get my FREE Solar Financial Calculator on my website ProjectsWithDave.com: projectswithdave.com/ Thank You for considering a small donation to help with channel expenses by clicking here: projectswithdave.com/donations/give/ 304Ah Eve Cells in stock here: solarsupplyhouse.com/product/set-of-four-304ah-eve-lifepo4-prismatic-cells-with-welded-studs/?ap_id=EverydayDave

@smashdaworld5916 5 күн бұрын

I was 100% skeptical before watching this video, now I'm 100% subscribed. Awesome content easy enough to follow fast enough to not get bored

@crhpjeff 4 күн бұрын

Agree with this

@ssoffshore5111 2 күн бұрын

If it had a JK BMS w/ active balancer and a breaker, I'd buy one! Nice clean look for DIY!

@robosborne9913 5 күн бұрын

I’ve been waiting for DIY batteries like this. Great video, thanks for sharing.

@ProjectsWithDave 5 күн бұрын

Thanks! It's fun to be able to evaluate the various options out there for everyone to see.

@zalllon 4 күн бұрын

This is great to see. It’s amazing to see how far costs have come down.

@iamblaineful 5 күн бұрын

I've only used and built DIY server rack batteries, the pre-built EG/SOK/etc are only 100Ah, so to me it was a no-brainer to build 304Ah for $500 more. I currently have 4 of them in Gobel cases, 60kwh, which will run my house in the summer for 24hrs if we had an outage. In 13yrs we've never had an outage longer than 4hrs, but the real goal was to run the entire house during the 4pm - 10pm Summer peak power rate/cost. We are NEM 3.0 here in CA, so there is no upside to backfeeding the grid at $0.03 Kwh while being charged $0.45Kwh.

@chadmarkley 5 күн бұрын

Didn't DIY my battery, but I have the Signature Solar 14kw outdoor battery that is enough, and then some, to carry me through the So Cal Edison 4-9 TOU price jump. I an on NEM 2.0 and even making it under that wire to get the old terms, the buyback rates suck. Batteries for TOU buffering rock

@dlfrestoration 5 күн бұрын

Why not just go off grid?

@cyumadbrosummit3534 5 күн бұрын

Yep and that's why I installed 66 kWh of recycled Tesla modules because the utilities keep moving the goal posts on the payback and then you still have no power in a blowout. My houses main disconnect has been off for 3 year now.

@johnzach2057 5 күн бұрын

This is the way. With cheap batteries there is no reason to sell electricity to the grid for pennies.

@judd_s5643 4 күн бұрын

@@dlfrestorationthink of the grid tie as a insurance policy if any single component of your system fails and takes it off line.

@Blakehx Күн бұрын

Wow, that’s an AMAZING price! Thanks for sharing!

@AlpineDividends 20 сағат бұрын

Very thourough, thanks Dave!

@UncleSAM-py5pq 4 күн бұрын

Cable as short as possible. Not about the resistance, that can be lowered with thicker wires. The killer for the inverter is high inductance on battery cable. Usually the inverter manuf. will specify the max cable length on the bat side. High inductance means high ripple current trough input capacitors (maybe also resonance....and that will kill them fast!) that will lead to premature aging on the caps. With caps that are degraded, you will have failure on the semiconductors. So the resistance is not that critical, but inductance on leads is the killer.

@gregben Күн бұрын

In a DC circuit, as long as the DC loads aren't varying wildly, inductance is not an issue.

@UncleSAM-py5pq Күн бұрын

@@gregben you are missleading yourself. The conversion from 48V to 400V is performed at 100-300khz...

@gregben Күн бұрын

@@UncleSAM-py5pq Yes, and that is done inside the inverter. Not in the leads from the battery to the inverter. I'm an engineer and you clearly are not.

@UncleSAM-py5pq Күн бұрын

@@gregben well, check how many agree with me. My personal opinion regarding your experience, maybe you can try something else, that fits you.

@craigsymington5401 18 сағат бұрын

Note the healthy dose of competence 😊

@jsal9678 5 күн бұрын

Great job. Keep up the good work

@ProjectsWithDave 5 күн бұрын

Thanks!

@mrrustygray 4 күн бұрын

Newly subscribed. Thank you. FL resident and I am dismayed that so many homes in FL do not have a solar. Sadly they require your solar be disconnected in grid down events. I am building a parallel network to avoid this restriction.

@ericjonboone Күн бұрын

I priced out a Tesla Powerwall with Solar Panels. If I finance the equipment, the monthly payments are twice my electric bill. If I had the cash upfront and put that money in the bank instead, the interest earned will almost pay my entire electric bill and still have my entire capital investment. The only thing I'm losing is power when a hurricane takes out the power. The current high interest rates have changed the equations for the financials of solar.

@craigsymington5401 18 сағат бұрын

There's a simple auto disconnect box...

@universeisundernoobligatio3283 6 күн бұрын

Simple build most of the complex work is done for you. No breaker or fuse in the battery box, consider that a negative. On my DIY system I have multiple battery’ banks, size each breaker so that total breaker current rating is 150% of max load since each battery will only see a small percentage of its current rating.

@ProjectsWithDave 6 күн бұрын

It does have a built in fuse, but I wanted the external breaker.

@petertrinh4602 4 күн бұрын

I nerves and excite to dip in the DIY battery backup for the first time. Can't wait until it get in stock. Great no nonsense video! Plus I think we get a 30% fed rebate for the battery?

@volt8399 5 күн бұрын

thank you for sharing!!!

@ProjectsWithDave 5 күн бұрын

Thanks for watching!

@danielrichmond99 4 күн бұрын

It would be essential to know the battery chemistry, the replacement costs and vendors and the number of cycles it can accept before failure.

@TheJensss 5 күн бұрын

Great video! I think you can get the cells even cheaper if you buy directly from China or a retailer that does not add to much cost. My rule of thumb is that a DIY kit battery is about 1/2 the price of a pre built battery and that a complete DIY battery is 1/3 the price of a pre built battery. Prices vary a lot so this may not be right for you, but with the pricing locally to me this is true.

@Step-n-Wolf Күн бұрын

DIY was always cheaper compared to Battleborn, et al. I personally never felt a need for the boxes. Nice, yes, but a little plywood works fine. Have bought from Basen and they are fine. Nice install. Can see the quality of your work.

@mflo1970 6 күн бұрын

Parece un buen estuche y bien construido, basen trabaja bien 👍

@pteepan2708 4 күн бұрын

Nice video, that was one of the easier DIY 48v cases I have seen. I'll just need to work out if the cost the others are worth the extra work.

@ProjectsWithDave 4 күн бұрын

Which other ones are you considering? What features are you willing to pay extra for?

@robertsmith2956 2 күн бұрын

Only thing I could see as an improvement is the plate being adjustable so you don't have to shim it.

@fullyelectric 3 күн бұрын

@Project With E. D. Truly great idea, David P. Made a similar video however i would use the CATL 204ah cells they only cost $38 each so a 10kWh battery would only cost $608 excluding the case, basically getting getting 2x the capacity at half the cost of an EG4 LL.

@joenardecchia1132 Күн бұрын

Do you know where to get the catl cells cheap?

@fullyelectric 18 сағат бұрын

@@joenardecchia1132looks like I can’t post links, so just search for the company name, they are on KZfaq as well.

@darrinhemphill2239 2 күн бұрын

As you verified the voltage between cells is very close however this does not mean they are all at the same charge state. From experience the cells will not be at the same state of charge unless you top balance them. I tried several days of hooking them up in parallel with no progress. One cell would always drain first and another cell would cut off at the top. I could watch it on the overkill BMS. After top balancing this took over a week with a 10 amp charger on a 12v bank, they preform much better but I do think the cell that would hit low voltage is not as “good” I now run an active balancer with this bank to help keep them balanced.

@ProjectsWithDave 2 күн бұрын

Right, the voltage curve for LiFePO4 batteries is very flat. It takes some time to top balance them and they have to be regularly balanced to keep them together.

@mzimmerman1988 6 күн бұрын

very cool. The battery design seems friendly to DIY work.

@ProjectsWithDave 6 күн бұрын

There are several companies making these DIY kits now with various features. It is a great solution to save money without spending the time to go 100% DIY.

@onecalladay Күн бұрын

Excellent video. Do you have an estimate on the total build time? I would like to see you mention why you just use one hand whenever possible.

@lopezfamily6183 5 күн бұрын

They build nice cases, have one these myself. The new one comes with DC breakers

@ProjectsWithDave 5 күн бұрын

Can you post a link to the one you are using?

@majorhavoc9693 17 сағат бұрын

@@ProjectsWithDave No, once people post they never think to come back and check for responses.

@northidahodreaming5657 15 сағат бұрын

very interesting...thanks for doing Dave...I might order one for $2246 today but out of stock....or appears if in stock free shipping isn't available?

@onthelake9554 5 күн бұрын

Nice job on the video . The box has the same flaw they all seem to have , the cells are not fully supported for compression on one end , you did have the extra room though for a plate at the hollow end . You can flip the handles over and they will be out of the way of the posts . Would like to have seen a breaker also . Any idea what BMS ?

@ProjectsWithDave 5 күн бұрын

I couldn't find any clear identification on the BMS. They claim it's their own, but I don't know who is making it.

@ExcelinusCom 4 күн бұрын

Never use vinyl electrical tape for long term use, only use rubber electrical tape. Both are at the hardware stores. The glue used on vinyl tape degrades and turns to slim then the tape will slide apart and make a mess. I do use both both types but vinyl for only a month or less.

@chaklungmailcom 2 күн бұрын

Recently I did maintenance of the old home appliance and it was an old black cloth based tape in use. It held firmly for decades

@quartamile 5 күн бұрын

So cool! Thank you! I think a similar video recommended using gloves to make the connections claiming that 48v can go through the skin, yeah?

@ekbuz 5 күн бұрын

It takes all about 60v to penetrate dry skin. You should be pretty safe with these batteries without gloves.

@ProjectsWithDave 5 күн бұрын

It never hurts to have another layer of protection with some rubber insolating gloves.

@marcfruchtman9473 2 күн бұрын

Thanks for this review! It is really cool to see this DIY battery kit. I have been considering EG4 for the Inverter with this kit. But, I don't know if this battery kit has the protocol to match? I definitely don't like the fact that the bracket can easily come close to contacting the Positive @ <a href="#" class="seekto" data-time="840">14:00</a>. The lack of "stock" isn't a real confidence booster either.

@ProjectsWithDave Күн бұрын

I haven't tried connecting it to an EG4 inverter. At this time, considering the reasonable price on the new EG4 vertical battery I would just go with this one: signaturesolar.com/eg4-wallmount-indoor-battery-48v-280ah-14-3kwh-indoor-heated-ul1973-ul9540a-10-year-warranty-pre-order/?ref=SALE Its still in stock here: www.currentconnected.com/product/eg4-indoor-wallmount-48v-280ah-14-3kwh-lifepo4/?ref=pwd

@raygibson1295 4 күн бұрын

A tutorial on how to use the dinkle terminal blocks would really help me out with my solar build. Thanks

@ProjectsWithDave 4 күн бұрын

I spent some time on them in this video: kzfaq.info/get/bejne/q7loltSh1afdZ6c.html

@ROMANOSKIP 5 күн бұрын

Great vid. Subscribed. Now all I need is for someone to do similar to this kit for extending/charging ev on a trip, like carrying an extra gas can. If anyone knows of that type of thing let us know. Many thanks! Great job, will watch your other vids on building this offgrid system although I need to understand is this only off grid or can be somehow integrated to a grid tied enphase or solar edge system. Opinion on that is appreciated too. Thanks!

@ProjectsWithDave 5 күн бұрын

I have videos for on and off-grid systems. You can see most of my install projects more easily on my website here: www.ProjectsWithDave.com

@dc1544 4 күн бұрын

The new MB30/31 cells are $70 each which means 1120 for the cells. That is 3 times more power than buying a 5kw battery for same price.

@clarencewiles963 6 күн бұрын

Thumbs up 👍

@ProjectsWithDave 6 күн бұрын

Thanks

@tquinn63 3 күн бұрын

Great video. Thanks! I'll need to locate my batteries and hybrid inverter in an unheated garage in PA. So I was wondering if there are any easy ways to add internal heating capability for the event that the garage temp falls below 32 degrees F, so I wouldn't have to put these cases in a temperature controlled enclosure. Any ideas? Thanks!

@robertsmith2956 2 күн бұрын

Those electric pipe wrap heaters. Just run along the bottom of the case to heat it.

@RollinHomies 5 күн бұрын

Thanks for sharing. can you elaborate a bit more on the MP's being AC coupled? My understanding is that they do not work without dc power, so I was on a head tilt when you disconnected them from battery and stated if on grid power they would precharge the capacitors. one other thing, though... get some safety glasses. One tiny spark could take your eyes

@ProjectsWithDave 5 күн бұрын

If the units are connected to AC on the grid connection side, you will find the battery connection terminals are at about 50VDC without a battery connected.

@pteepan2708 4 күн бұрын

Do you put on gloves to wipe your bum as well. Safety First🤔

@Lyall4 5 күн бұрын

Amazing review and details. I have been looking for a battery backup solution for my house. When I talked to my original solar panel installer. There quote was quiet high and would require the replacement of my inverter as well to us their solution. Can this battery potentially work with any inverter?

@ProjectsWithDave 5 күн бұрын

The inverter has to be designed to work with 51.2V nominal batteries. Also, if you want communication, the BMS is only configured for certain brands of inverters.

@patrickmckowen2999 4 күн бұрын

I guess if you want it fancy looking tfat is one diy way. How much was shipping. Cheers

@bill2292 3 күн бұрын

How does the BMS work with EG4 Inverter chargers?

@NeverTakeNoShortcuts 5 күн бұрын

What's attractive about this (aside from cost) is that you can replace cells yourself if they go bad, but most likely by the time they do, the same spec. batteries won't be available any more. I just wonder what will happen in the next 5 years with battery tech for DIY type work.

@ProjectsWithDave 5 күн бұрын

I was thinking the exact same thing. One of the reasons I like the SOK batteries is they can be serviced. I have one cell in the stack that seems to be drifting out of spec. I was considering replacing it but as you said I have to find the same cell to replace it with. I suppose if you have a lot of the same battery, eventually you could use one as "spare parts."

@MyCabinLife 5 күн бұрын

Couldn't you just order a couple extra cells/packs when you order the original ones to have around for repair/replacement?

@robertsmith2956 2 күн бұрын

like everything else. They will serialize the battery so you can't swap one out.

@wizardtm2 5 күн бұрын

Great video. Wish these products would be easily available in Europe 😢

@philliethapillie 3 күн бұрын

They are

@surfguy777 3 күн бұрын

They are, clink the link. Can get it cheaper there.

@alien105cz 3 күн бұрын

Can you test new AIKO FVE panels best on marker 25 procent effecient on 700WP , thanks.

@leexgx 4 күн бұрын

I wouldn't have put the temperature sensors in hot glue as well as it been an insulator and it could damage/melt the sensor (thought you was just glueing the cable)

@jedics1 5 күн бұрын

Every year products come out that make it a lot easier and cheaper to make and store energy that make paying for it from the grid look like a waste of money. Only 4 years ago I did a similar diy system, it was a lot of work for similar money with half the storage capacity of yours. With all the crap going on in the world solar/batteries is one area that is a becon of light.

@ProjectsWithDave 5 күн бұрын

The technology is improving rapidly. It has to because electric cars aren't competitive with the current technology.

@evanmartin7809 3 күн бұрын

I bought factory built Chins batteries on amazon for $0.17/Wh. Personally my time is worth more than $.03/Wh

@tomrust312 3 күн бұрын

I'd be a bit concerned with standing the array upright. It puts 100lbs of load on the bottom cell. Fine laying down, which was what it was made for.

@geauxracerx Күн бұрын

It’s ALWAYS made sense to DiY your own battery banks. ALWAYS. You can start small and affordable and grow it over time. Basically in the first 29 seconds thus guy only said, “until now no one had given me what I needed to do it for free”

@ProjectsWithDave Күн бұрын

Actually, I take very few products that are offered to me. As I stated, I have not done a DIY battery because I didn't think the savings was worth it. But if spending all the time and effort to find all the components learn how to build it right is something you enjoy doing than by all means go for it. Who knows, I may decided to do it some day just for the experience.

@WiSeNhEiMeR-1369 6 күн бұрын

HOWdy P-w-E-D, ... Thanks COOP ...

@Jcewazhere 4 күн бұрын

Neat. Would love a kit that lets me drop the battery pack out of my Bolt at end of life and use that as home backup. EoL it'd probably still have 30kWh for essentially free. Just the cost of the kit and the labor. There are Leafs and Bolts for around $10 grand that have 20+ kWh battery packs in them. Why aren't we all using those?

@robertsmith2956 2 күн бұрын

gooberment is wasting out tax money to build recycling plants so they will never be available. Doubt you can get your old part back when they replace the battery at the sealer also.

@robert5 2 күн бұрын

People are starting to use such car batteries. Do more research. I am planning on using such a battery. All you really need is an inverter that can take the higher voltage and the right BMS. I'm not an expert but am doing research in anticipation of a DIY system. Why I'm here.

@GabrielSBarbaraS 2 күн бұрын

Does your battery system protect against backfeeding into the grid under grid power failure. ( Assuming the solar already has protection built in )

@ProjectsWithDave Күн бұрын

Basically, yes, but that protection happens at the inverter, not the battery.

@SteelerDHo 5 күн бұрын

Sorry if I missed it. But do you have a link to where you got the cells for that price? Thanks in advance!

@ProjectsWithDave 5 күн бұрын

I got them from the same place, I updated the description with the cell link separately for you. Unfortunately they are also out of stock. If I can find a good source in stock I'll add it to the batteries page on my website here: projectswithdave.com/batteries/

@GadgetReviewVideos 6 күн бұрын

I see you have the same fluke clamp. Have you measures in the inrush current with that heat pump soft start? I just installed an emporium system on my house to size up what I need to by for my system. While I had the panel open I did take some inrush current measurements and saw the heat pump pulling 85 Amps on each leg of the 240 breaker. CC was about 10 amps on each leg, or about a total of 2.4Kw with ambient temp of 94. I was curious to see how that soft start pulls.

@ProjectsWithDave 6 күн бұрын

With the soft start, the ramp is so soft it doesn't register as inrush. It's pretty amazing. As long as you use a low frequency inverter like the Victron system in this video it should work great.

@GadgetReviewVideos 5 күн бұрын

@@ProjectsWithDave Good to know. I am considering a toroidal transformer based hybrid inverter. Thanks.

@ProjectsWithDave 5 күн бұрын

You should be happy with that performance. Make sure the idle losses are acceptable for your situation. Victron has the best idle loss of all the inverters I've checked.

@GadgetReviewVideos 5 күн бұрын

@@ProjectsWithDave Yea, I do consider that. I’ve noticed since I am looking to go hybrid that some inverters have a lower idle when connected to the grid vs sickly off grid. Even some non-hybrids that can’t feed the grid still have. a grid hook up option and run 1/2 the idle. A lot to consider and a lot of research for sure.

@cgutowski471 5 күн бұрын

Can you chain the BMS together with other Basen Green cases and/or with SOK so the inverter can see all capacity?

@ProjectsWithDave 5 күн бұрын

I've had the BassenGreen battery connected in parallel with my SOK battery for about a month now. It works, but there are some issues. The batteries each have a different brand BMS so they can't talk to each other. To see the whole capacity I am using a shunt between the two sets of batteries and my inverter. 1) My DIY battery is 300Ah and my SOK stack is 500Ah. The result is the resistance is not the same so they don't charge and discharge at the exact same rate. If I don't completely charge the system to 100% the 300Ah battery eventually drifts to 0% when the 500Ah battery is still at 30%. If I charge them to 100% about once a week it works ok. 2) I am using a shunt to track the entire pack capacity on the Victron system. I have not yet tried to get it to track both batteries separately. So if you have a shunt and the two batteries are the same chemistry (LiFePO4) and the same capacity you should be able to put them in parallel without too many issues. Just charge to 100% periodically.

@cgutowski471 5 күн бұрын

@@ProjectsWithDave thanks for the reply. I have a similar situation with an eve105 bank and eve280k bank and charging differences if not getting to 100% at least every other day. Just using simple JK BMS and looking to get these into a case with a communicating bms.

@tylersingleton9284 Күн бұрын

The only reason this technology is still so expensive is because it can be financed through the solar installers.

@ninetails415ify 3 күн бұрын

Would it be possible to add something like this for an existing enphase battery setup? Would like to expand storage but enphase batteries are much higher costs.

@ssoffshore5111 2 күн бұрын

Their batteries (I believe) are higher voltage, so no.

@kellstat 4 күн бұрын

Is this a system that could be hooked up to an existing solar generator battery bank/pack, like an ecoflow Delta series, to be able to expand that capacity?

@surfguy777 3 күн бұрын

Yes, if you connect it through the solar port. Make sure to use correct size wiring and fuse the positive. Some KZfaq videos showing how to do it.

@awbean5254 5 күн бұрын

DAVE, We would be interested in watching you amalgamate your different battery 🔋 manufacturers onto your system. We have been informed you need to keep the same batteries 🔋 manufacturer or add an additional inverter to connect different batteries. Would there be CANBUS compatible issues with two different battery manufacturers connecting to one inverter? What is your experience?

@ProjectsWithDave 5 күн бұрын

I've had the BassenGreen battery connected in parallel with my SOK battery for about a month now. It works, but there are some issues. 1) My DIY battery is 300Ah and my SOK stack is 500Ah. The result is the resistance is not the same so they don't charge and discharge at the exact same rate. If I don't completely charge the system to 100% the 300Ah battery eventually drifts to 0% when the 500Ah battery is still at 30%. If I charge them to 100% about once a week it works ok. 2) I am using a shunt to track the entire pack capacity on the Victron system. I have not yet tried to get it to track both batteries separately. So if you have a shunt and the two batteries are the same chemistry (LiFePO4) and the same capacity you should be able to put them in parallel without too many issues. Just charge to 100% periodically.

@OffgridApartment 6 күн бұрын

Dave, maybe I’m missing it, but where did you get your cells?

@ProjectsWithDave 5 күн бұрын

Cells and Case from BassenGreen.

@stevenshircliff393 5 күн бұрын

Looks like BassenGreen out of stock. So much for trying this project.

@ProjectsWithDave 5 күн бұрын

Unfortunately, I don't have a date from them on when they will be back in stock in the US. You can get them directly from China, but one of the reasons I picked them was they had US stock.

@enigma9789 3 күн бұрын

The cells that are in stock make this battery cost more than an EG4 with a 10 year warranty.

@about2088 5 күн бұрын

What is the demension of your catl cells? I’m wondering if that diy pack will fit my 16 Winston cells

@ProjectsWithDave 5 күн бұрын

Width= 173.6mm Thickness= 71.5mm to 72.0mm Height= 204.8mm Terminal Post Pitch= 90.0mm

@TheGuruStud 4 күн бұрын

You can get 280Ah cells for $55/ea or less in bulk. Shipping is cheap, too.

@ProjectsWithDave 4 күн бұрын

Where are you sourcing them?

@ssoffshore5111 2 күн бұрын

@@ProjectsWithDave shipping from China

@TheGuruStud 2 күн бұрын

@@ProjectsWithDave gobelpower but there's some others, too

@majorhavoc9693 17 сағат бұрын

@@ssoffshore5111 Dude, he meant a link to seller. Why is it nobody provides the info on their "finds" with great pricing and availability? Is it a secret? People.

@johngriffin618 3 күн бұрын

This is a cool idea but it hinges on cheap grade a batteries and the availability of that case. I was ready to purchase enough to build 5 of these batteries but they are all out of stock, the only batteries in stock in your links costs a whopping $800 for a set of 4 of the batteries, which comes to $3200 for just the cells, $100 less than the EG4 wall mount I am currently waiting for a free shipping promotion to purchase. Then you have the case, if you can get it, plus labor, and lack of a warranty. If they can keep these in stock then it will be an amazing value, but until then it isn't worth it imo. I love that this is happening though, I hope that a few other companies start doing this and provide cheap DIY battery kits.

@istvan3146 2 күн бұрын

Great, but they take up 2-3x space during delivery.

@ProjectsWithDave Күн бұрын

Delivery does seem inefficient from a space stand point, however, the assembled version would need a pallet and a forklift instead of a bunch of boxes. I guess each option has its pros and cons.

@1982757 5 күн бұрын

Great video. Could please post a link to the BMS software. I have the exact BMS but version 1.1.635-06. I would like to upgrade it but couldn't find where to download it from. Thanks.

@ProjectsWithDave 5 күн бұрын

Thanks! I don't know if the software I used will work for you or not, but I added it to my Google Drive. Password is in the "txt" file. You can download it here: drive.google.com/file/d/16hyQabxsteoz9PFU_uknw2FMX9dhWmd-/view?usp=sharing

@1982757 4 күн бұрын

@@ProjectsWithDave Thanks a lot.

@1982757 4 күн бұрын

@@ProjectsWithDave Thanks, again. The software worked with my battery. However, I don't know if I can update the BMS from this software. It seems one can only read and change settings. Do you know the BMS make in your battery?

@ProjectsWithDave 4 күн бұрын

Do you have the "CONFIG" tab in the software? Did you see the instructions I included? Did it accept the password?

@1982757 3 күн бұрын

@@ProjectsWithDave Yes. It did

@BeastMovies 5 күн бұрын

Nice system. I'd replace those small cables inside. Probably CCA as well.

@ProjectsWithDave 5 күн бұрын

The nice thing about these kits is you can make those kinds of adjustments fairly easily. You could even use a different BMS if you wanted to.

@aximuro 4 күн бұрын

Hi sir I have a question, how much does one battery cost and where did I buy it, is it available in Belgium thank you

@ProjectsWithDave 4 күн бұрын

Mine were around $100 each. I'm not sure what sources there are in Belgium.

@outoftime788 4 күн бұрын

i hav a 24v batery. why does my inverter cutoff n alarm goes off at jus 21v? thats not even close to half capacity

@robertsmith2956 2 күн бұрын

inverter isn't programed properly, probably wrong capacity setting. Just like this one was set for 280ah

@mcChristPuncher Күн бұрын

A little concerning. Cells swell when something goes wrong with them. If they're right up against each other with nowhere to go it's possible one bad cell can physically damage the others.

@quartamile 5 күн бұрын

Do you know the total weight? And it can be installed standing on it's backend, yes? Thanks again!

@ProjectsWithDave 5 күн бұрын

You can stand it on end. I didn't weigh it when I was finished. It's very heavy!

@OrnKo 4 күн бұрын

It’s about 110KG.

@ashanmendis8091 3 күн бұрын

does it come for a smaller battery set like for 5kwh

@ProjectsWithDave 3 күн бұрын

I suppose you could reconfigure it with lower capacity batteries, but I don't know of one designed for 5kWh.

@jimk8520 4 күн бұрын

@<a href="#" class="seekto" data-time="550">9:10</a> Why on earth would you touch both leads of a charged battery? Yes there was tape over the terminal and it’s only 52 volts but geez.

@tlteal 5 күн бұрын

Where did you get the actual batteries from?

@ProjectsWithDave 5 күн бұрын

BassenGreen for both the case and batteries.

@ekeretteekpo3004 2 күн бұрын

Now, time to go make the money to get the batteries with. 🚶 🚶 🚶

@Mgamerz 5 күн бұрын

Do you have to fill the entire case full of cells?

@ProjectsWithDave 5 күн бұрын

If your cells are not as fat you could use a spacer to fill the gap. Depending on how far off they are you may need longer leads for the BMS connections.

@blacko3539 5 күн бұрын

There's smaller cases started to be produced but for 12/24v applications. The batteries tend to be 3.2v hence you need 16 for 48v which is a common size that inverters use. It's why most DIY cases are this size.

@TRYtoHELPyou 5 күн бұрын

"out of stock"......

@BobBob-il2ku 3 күн бұрын

Does anyone make a 100ah version of this?

@zodiacfml 3 күн бұрын

$550 pretty steep for a box, terminals, and BMS. I'd probably need something like this with a configuration at 100V DC. It is time for the industry to move to this voltage.

@ProjectsWithDave 3 күн бұрын

Why stop at 100V?

@zodiacfml 3 күн бұрын

@@ProjectsWithDave Yeah. I meant to say 96V, double of 48V. Nice if 120V not hard or expensive as product

@ssoffshore5111 2 күн бұрын

I believe the safety aspects of 48V is the reason it's still the industry standard.

@robertsmith2956 2 күн бұрын

240V would be better. Then you have your split phase center tapping it. Inverter is now just an ESC making a sine wave out of it. Saw some work on it, but put in a fuse, 240VDC into your wall outlets won't be pretty if something goes haywire..

@zodiacfml 2 күн бұрын

@@ssoffshore5111 True on Power over Ethernet. However, we are using and plenty experience on 110-240V AC. EVs are 400-900 volts, there;s definitely experience and equipment for higher voltage.

@tujuprojects 5 күн бұрын

Are those SOK batteries 16s?

@ProjectsWithDave 5 күн бұрын

Yes

@geoffhaylock6848 3 күн бұрын

At the cost of Chinese labour I don’t see how the DIY option can really save much money. If you are shipping the batteries and parts outside the case that will add extra shipping costs?

@ProjectsWithDave Күн бұрын

Shipping was free.

@Ed19601 Күн бұрын

14,5 cts per Wh might not be the best description as it is a one time cost. It is not what a Wh is going to cost you coz frankly those are kWh prices

@Roacheification 3 күн бұрын

Lol. I buy factory built for $1,400. No need to build myself.

@TheWuzyy 4 күн бұрын

what if you burn down your house with that?

@murrayrandall2085 3 күн бұрын

If I was given one for nothing, then I would be rapped to build this DIY battery.....

@justinfowler2857 4 күн бұрын

Nice video, but at several times you've shown the biggest problem with making your own battery. Chinese manufacturing is hit or miss at best. I built my own battery before. I spent months waiting for parts. Then I spent several days building everything. Everything charged up and showed fully functional. I then hooked a load. Then the battery promptly shut off. The battery cells were worthless junk. Grade "A" cells don't mean jack. For $500-$1000 dollars more I could have saved a massive amount of time and money. That's my story though. YMMV.

@ChrisHensley2 2 күн бұрын

But your prebuilt battery probably came from China too

@simon359 6 күн бұрын

The real question are these real grade A batteries, I’ve heard a lot of people say they’ve been substituted?

@thor.halsli 6 күн бұрын

Who is all these people you talk about? Grade A, CATL is the best battery cells you can buy currently

@simon359 6 күн бұрын

@@thor.halsli Talking about the Chinese websites that you order them from!

@Hdhhdhdjsjnkoi Күн бұрын

How exactly the house burn down?😂

@beebop9808 5 күн бұрын

Got 96 pretty blue cells waiting on me to put them together.....

@MyCabinLife 5 күн бұрын

If it only took him 2 hours to build this it sounds like a good project for you to do on a Sunday what's the holdup?

@beebop9808 5 күн бұрын

Still finishing up a 10x20 ft shed where my equipment is going. About to get a couple of walls finished up so I can hang a couple of my inverters up and a couple of distribution panels, the dc bus and at least one battery pack so I can get a 12kbtu mini split running. Cool things down some in this sweltering heat and get back to finishing out the building and then back to installing the rest of the solar equipment. Among everything else in life needing to be done........

@MyCabinLife 4 күн бұрын

@@beebop9808 yep you definitely have a project going, it's only going to get hotter LOL

@philippserrin8268 5 күн бұрын

Why would this not make sense. I contribute $113,000. We buy 20 of these kits. You assemble them over a weekend. We sell them for $3,000 each and make a profit of $15,000. They should easily sell for that price right?

@philippserrin8268 5 күн бұрын

My math is wrong. For $113,000 we could buy 50 kits and at $3,000 each could sell them for a total of $150,000.

@miraclesoundco8911 5 күн бұрын

@@philippserrin8268Your math is still wrong. The total price of 2246 does not include the 550 for the case....another 27,500 for the cases.

@philippserrin8268 5 күн бұрын

@@miraclesoundco8911 at 0:36 he lists 16 cells times $106 (equals $1,696) PLUS $550 for the case and the grand total is $2,246 total times 50 batteries equals $112,300.

@robertsmith2956 2 күн бұрын

yes, once you pay for your business license and advertising so they will know where to buy them. I remember a guy bought a pallet of batteries to sell, and ebay refused to release his money for 3 months claiming he could be a scammer.

@wanderlust7020 4 күн бұрын

Can you claim the 30% Fed tax rebate on the parts bought to assemble one of these batteries?

@ProjectsWithDave 4 күн бұрын

You should consult your tax advisor for tax questions, but I don't see why it wouldn't count.

@robertsmith2956 2 күн бұрын

Since you can claim it while living in china, I don't see why not. IRS will pay especially if you have no us address or income.

@sociopathmercenary 2 күн бұрын

You just need to buy at least three kW hours of batteries to be able

@simon359 6 күн бұрын

Before pushing loads through the battery, shouldn’t you have charged it up to 100% first?

@thor.halsli 6 күн бұрын

He did charge it up to 100% and did a full drain test after to check capacity

@ProjectsWithDave 5 күн бұрын

Right.

@GapRecordingsNamibia 3 күн бұрын

Just an FYI, when you "DIY" a battery shelf like @Off Grid Garage Australia (that you showed in your intro), you do it out of passion, not to save money..... So, the cost then is subjective..... And, Andy did build his shelf himself, thereby making it DIY. Nice build though. Just an FYI, You always leave off the center buss bar that joins the two halves of the pack together, this still makes it safe to work with while putting on the busbars and connecting up the BMS, once that is done you can then connect up the center busbar thereby completing the circuit... Also, for a quick visual inspection in the future, you can put a permanent maker line across the nut and stud heads to check for nut movement...

@ProjectsWithDave 3 күн бұрын

I have to say for me there is always a part of it that is just the challenge of learning something new. Thanks for the tips.

@robertsmith2956 2 күн бұрын

Not just passion, the right to repair. If you build it you can fix it. Everything made is compromises, building yourself you decide what is the most important, or no compromise, and go whole hog damn the money.+

@ProjectsWithDave Күн бұрын

Good point, ability to repair is not a small factor. I'm working on a video showing the challenges of repairing an all in one power station. In some cases it can be impossible and you just end up with an expensive brick.

@bobbieprice1351 Күн бұрын

Is this a better price than geting one from the discount china sellers?

@ProjectsWithDave Күн бұрын

Tesla makes cells in the US, but as far as I know you can only get them in final products like the Tesla power wall.

@kajakfahrerr 4 күн бұрын

"We cannot deliver fully build ones without loose bolts, so.... please build your own!" - chinese company , thanks 😅

@majorhavoc9693 17 сағат бұрын

Solarsupplyhouse battery set is $799 BassenGreen Battery set is $424 Scratching my head...

@AIC_onyt 2 күн бұрын

how is it in terms of safetey? the project is cool, but the idea of a 25kwh battery just chillin in my home is scary

@robertsmith2956 2 күн бұрын

Wire them to your ring doorbell so when ATF tries to put tape on it. ZZZZZZAP!!!!

@sociopathmercenary 2 күн бұрын

Lithium iron phosphate battery chemistry is safe. It's not a nuclear reactor.

@ProjectsWithDave Күн бұрын

LiFePO4 battery chemistry is one of the safest and most stable options available.

@samyuill 13 сағат бұрын

working at the final terminals with no gloves,,,, 48v + that was sketchy to watch

@MrBumbles2 5 күн бұрын

you call that a deal lmao

@uday20101 5 күн бұрын

Can I run this vertically

@ProjectsWithDave 5 күн бұрын

Yes.

@lynnwilliam 5 күн бұрын

If a person can assemble it in 1 hour. A person could probably do 2 an hr. That person you just pay them 20$ or 10$ in china. So how is this cheap because its a DIY kit ?

@ProjectsWithDave 5 күн бұрын

Good question. Also, there is way more packaging to ship everything independently. One reason might be there is no holistic warranty for the DIY setup.

@robertsmith2956 2 күн бұрын

you don't have to hire an HR department like the company you hire to do it has to.