I just finished assembling one myself. I just bought the plastic parts, since I already had the cells (with red Loctite on grubscrews) and the JBD BMS. Take my word for it, you want the cells fully discharged before you try and insert them, the fit is that good. I had already purchased 6 awg silicone wire, it is much easier to work with, and the single biggest thing that I would recommend they change. My JBD gave me no problems charging at 80 amps and since I didn't purchase their BMS, I wasn't aware they had programmed down the limits. I also made my wires longer and had fewer problems with the final assembly. Once assembled, the battery is pretty much "just right" and worth the money. My cells are grade B (although not previously used) and capacity wise I have two at 268AH, and the other 14 are 274AH or above. I am matching them to the limited extent possible, and it is working out nicely. The kit is actually nicer than I expected, I would highly recommend it. I just ordered 3 more, if you are on the fence about the kit, I definitely recommend it.
@LithiumSolar2 жыл бұрын
Yeah even at 30% SOC they were tough to fit in, can imagine 100% SOC is a bit of a struggle. But that's a good thing as it indicates a nice snug (but not too tight) fit. I'm still not sure why the BMS was programmed lower like that, but all of the settings are fully-configurable as needed.
@john_in_phoenix2 жыл бұрын
@@LithiumSolar Yes, originally they hadn't published the guide, and I place the cells in backwards (really just means the positive and negative ends were reversed). It was a royal PITA to remove them and put them in correctly. I had to discharge them fully to get them out, and it still was NOT easy. It seems to give the cells just right compression. The reason the BMS is programmed with lower limits (I was told) is the heat generated when at the upper limits of charge and discharge. I tested at 80 amps charge rate, I wouldn't worry about it too much. Just up the charge rate if you need to in the software.
@putteslaintxtbks51662 жыл бұрын
One thing I didn't see was high and low temp sencers. Does JBL bms have that or add on?
@john_in_phoenix2 жыл бұрын
@@putteslaintxtbks5166 Yes, it has temperature sensors, and yes you can disable charging when the low temperature setting is reached.
@jeebusk2 жыл бұрын
@@john_in_phoenix where is the temp sensor located?
@WillProwse2 жыл бұрын
What a cool little kit!!! And it is dirt cheap! Wow I had no idea about these. Good find
@thervsolarseries28272 жыл бұрын
Truly nice kit. Pricing seems to keep getting better! Great video.
@sfkenergy2 жыл бұрын
Hey, We can you send you our V3 kit when it comes out we are getting our injection molds finished up, it works with cells with studs welded on them without the need for the external spacer.
@WillProwse2 жыл бұрын
@@sfkenergy that would be awesome! My email can be found on my videos
@shoreangler33832 жыл бұрын
@@WillProwse I'm excited to see your review! :) I just found this guy, from your page. Lol
@LithiumSolar2 жыл бұрын
@@shoreangler3383 Hey now, "this guy" is still cool too LOL.
@sams58032 жыл бұрын
Man if it wasn't for you and Will and David. I wouldn't get to see any of this stuff. I love it
@ambersmith65172 жыл бұрын
this one looks very nice
@joshnabours91022 жыл бұрын
14:10 - as a workaround you could use the classic 2 nut trick to tighten them. You tighten 2 nuts against each other on the stud and they will friction lock against each other. This allows you to use the nuts to tighten the bolt from the top. Then you can remove the nuts afterwards.
@MikeJordanUnCamplicated2 жыл бұрын
beat me too it 😀
@Scott-ig1zd2 жыл бұрын
+2
@DCGULL012 жыл бұрын
Actually- that was a total WIN in my eyes. Genuine capacity, well designed connections & well laid out. Under $300.00/ 100AH with some assembly required seems like a smoking deal as well. FWIW, it seems that the battery profile may fit in a standard RV battery holder (your mileage may vary) and you can buy nice positive & negative bussbars for easier access & fewer mistakes. I really, really like this solution for the 'mebbe' DIYer, David! I'm a perfect candidate for this solution- I have the tools, I have the knowledge, but- I don't want to solve for the variables like; compression, battery box, etc... Really impressed. Thank you very much and I hope I can get you a few bucks using an associate code when I buy them?
@jeebusk2 жыл бұрын
You can get 100ah for under $100 in conventional deep cell batteries...
@jlmaster110 ай бұрын
@jeebusk but conventional chemistry doesn't allow for use of 100% capacity and cycles are drastically lower.
@SuperVstech2 жыл бұрын
A very nice diy alternative. Prevents us from needing to buy a LOT of tools for the job as well. Saves a lot for the diy battery builder.
@simpletennesseelife58952 жыл бұрын
I think you need to do a little more research I can still build one battery including batteries and all tools needed like heat gun cable crimpers and anything else including everything in a battery box for the almost 1300 dollars for one box premade that they sell and you still have to assemble it. I can do all the same for about 780 not including the tools which cost less than 200.
@john_in_phoenix2 жыл бұрын
@@simpletennesseelife5895 Nobody is stopping you. I purchased a kit (minus the cells and BMS) and will purchase more. What you wind up with when finished is very useful with a great finished appearance and quite useful. They add a lot of value to the kit version, if it isn't worth it for you, then nobody will stop you from doing your own. I already had the cells and BMS, and found the kits to be of a quality that I just ordered 3 more.
@erich18802 жыл бұрын
This looks like a great, affordable, quality DIY battery solution! I think we'll start seeing the market flooded with similar kits in the near future.
@john_in_phoenix2 жыл бұрын
They actually put a lot of thought and effort into this kit. They added a lot of value to just ordering the battery box as some have suggested. I know exactly how much it would cost to DIY, and this is well worth the money (especially if you don't already own a printer to design and manufacture the plates). I am very pleased with the finished product, pleased enough that I just ordered 3 more.
@jeebusk2 жыл бұрын
The number one question should be, what is the intended application?
@jlmaster110 ай бұрын
@jeebusk typical use, but also educational so the end user has a greater grasp of their equipment.
@haydenwatson79872 жыл бұрын
You should not have any washers between the ring terminals and the battery post because stainless steel has higher resistance than does the terminal. This is really critical for the higher current terminals because the washer will overheat.
@jeebusk2 жыл бұрын
Right, a ting terminal will perform the mechanical function of a washer anyways... Also ~5:20 those buss bars don't necessarily look like they're nickel coated either, they should be though.
@sfkenergy2 жыл бұрын
Hi, thank you for the review, it looks like we sent you the wire harness for the v1 kit. We have a different wire harness for the v2 which is a little longer that takes care of the spacer height difference.
@ericdunn62322 жыл бұрын
A trick to tighten the screws for the terminals: Install 2 nuts. Tighten top nut against bottom nut. Tighten screw with bottom nut. Remove top nut, remove bottom nut.
@jeebusk2 жыл бұрын
Jam nut
@camielkotte2 жыл бұрын
Nice to see this hands-on. Great vid. But one thing as a noob... Please do tape off your terminals while building your battery. So little effort, so much safety.
@johnsmithfakename84222 жыл бұрын
I was wondering how long until someone made something like this. This is something I would look into if I was going to buy LiFePO4 batteries.
@mididoctors2 жыл бұрын
When tightening using a jaw wrench use a wooden insert to protect the threads
@AndreiBanciu2 жыл бұрын
1. At minute 8:00 you could've moved one of the ring terminals to the end battery post, as the busbar going between the two batteries would've read the same voltage either end. 2. If you strip the M6 thread on the battery posts, just drill and thread them to M8. Or use steel coil inserts to repair the M6 thread. Both cheap options, which means the battery is still usable.
@B_Van_Glorious2 жыл бұрын
I came in here to say the exact same. Just retap to m8. It's aluminum, you only need the strength of a toddler to do it, so harbor freight taps would do it for ya, lol. I've had to do this to several different banks over the past dozen years, it's no big deal, honestly a non-issue. The only issue is that it's aluminum to start with so pure copper terminals will just cause corrosion. Make sure yrs are AL7CU or AL9CU.
@jeebusk2 жыл бұрын
@@B_Van_Glorious they should be nickel plated
@jwsolarusa2 жыл бұрын
Beautiful assembly by Sun Fun Kit. This really amazed me to see a company put together such a DIY Kit like this one. All the customer have to do is to read and follow the instruction manual of the manufacturer on how to install this kit and you are all set to go👏 👍 I do like to assemble project like this which I think in my opinion is really cool built DIY/Portable Solar Powered Generator. Sun Fun Kit please send me one to do another beautiful review of this kit in a different perspective Very nice review and thanks for showing this awesome kit brother.
@LithiumSolar2 жыл бұрын
Agreed, they put together a very nice kit here. Very well thought out.
@jwsolarusa2 жыл бұрын
@@LithiumSolar Yes. FANTASTIC
@john_in_phoenix2 жыл бұрын
I am putting together 2 of these batteries and an MPP 1012lv on a cart for my sister and grandson to use as power failure generators. The finished product is very good if slightly anemic, but certainly enough to run the refrigerator and television for an extended outage.
@jwsolarusa2 жыл бұрын
@@john_in_phoenix Awesome job and thanks for sharing
@jeebusk2 жыл бұрын
@@john_in_phoenix did you consider cheaper and less explosive conventional deep cell Batteries?
@SuperVstech2 жыл бұрын
Oh, I cannot believe you used channel locks on the bolt threads… I’m sure you were gentle, and I noticed you pushed backwards from the jaw grip to limit damage to the threads, but still, a better way to do that would be to put a pair of nuts on the stud, and tighten them together, to create a safe gripping surface.
@LithiumSolar2 жыл бұрын
I was just frustrated by the time I got to that point, which resulted in the inappropriate use of pliers.
@john_in_phoenix2 жыл бұрын
That is a good tip, I just made slightly longer (doubled) 6 awg silicone wires and had no problems. The wire makes a big difference in the frustration level.
@no1slisteninganyway2 жыл бұрын
Thanks, great review! I didn't see a temperature sensor anywhere for low temperature charge cut-off.
@jameshwang47502 жыл бұрын
Yes, isn't low temp charge cut off BMS very important for LiFePO4 Battery?
@LithiumSolar2 жыл бұрын
The temp sensor came attached to the BMS and is pre-programmed for 0C low temp charging cutoff. You can place it where you want. You can see the black wire on the right of the BMS at 12:39. It's also covered on page 13 of the instruction manual.
@jameshwang47502 жыл бұрын
@@LithiumSolar ok, if you show it and test it like Will then we won't be asking in the future. Sometime manufacture claim low temp charging cut off works but doesn't.
@LithiumSolar2 жыл бұрын
@@jameshwang4750 I've tested the temp protection of JDB BMS's more times than I can count. Didn't feel it relevant to do yet again.
@JR-xw5dk4 күн бұрын
For the positive and negative post you can put two nuts on one post at a time, lock them against each other then tighten the bolts. Then break the nuts apart from each other. I know this is an old video, but this tip may come in handy elsewhere.
@ProspectorTripp2 жыл бұрын
Hello, very clean kit with a few small issues. Nice work! The problem is that the kit Without cell’s is reasonably priced and is likely a good kit for someone making a tiny or smaller camper or van system. However with cells included are Very Very Very Expensive! IMO I bought EVE 280ah cells for $106 ea (I think up to about $135 ea now) I feel almost all resellers of cells are unreasonably priced at a “kinda usual” in the USA 300% markup! Just for reselling cells that they have inspected? ALL 64 of my EVE cells directly from Basen were packaged and matched perfectly as far as open voltage goes and had zero issues or damage. If you can DIY.. I recommend doing it yourself! Then hopefully resellers will get the message and stop with the nonsense of 300% cell markup! Good video and nice work sir! ✌️PT
@LithiumSolar2 жыл бұрын
One thing people don't seem to understand is that businesses need to make a profit in order to succeed. They aren't 300% marked up. They're probably acquiring them from the same (or similar) source as the rest of us. If they buy for $125 and sell for $200, that's a 60% increase or $75. They also have to factor in damaged cells, payment processor fees, discount codes, etc. So how much are they really making per sale? Probably not much and certainly not "nonsense". Buying from China will always be cheaper...
@john_in_phoenix2 жыл бұрын
The cells they are selling are pretty obviously grade A, and go for (assuming you order grade A) about $130 to $150 each plus shipping. The ones I purchase are manufactured by EVE when you order, and come with the EVE test reports. Yes, you can order "bulk" cells, but you get what you pay for. As noted, they aren't making a large profit on these, I think they are very reasonably priced. "Bulk" cells won't come with the EVE branded caps for the terminals, just FYI. I already had cells and BMS, so I can't really speak for the ones they supply. But I will note that only cells sold and shipped by EVE come with those caps.
@ProspectorTripp2 жыл бұрын
@@john_in_phoenix 😂 as long as you are happy with your purchase! Your happy!
@ProspectorTripp2 жыл бұрын
@@LithiumSolar got it.. need to make a profit. I said as much. However if you are DIY.. most want to DIY to save money. Mine.. 53,760watts under $7100 Just saying..
@davecroft29912 жыл бұрын
@@ProspectorTripp how much would you sell you $7100 53k battery for? If someone offered to commission you to do the job 30% up front the rest when delivered.
@sfkenergy2 жыл бұрын
Yes we program the default settings for 60 Amps charge and 125 charge, our reasoning behind this is better to have a little wiggle room, but of course it can be over-ridden the by the user. In a future app update we will add this feature as well.
@LithiumSolar2 жыл бұрын
Awesome, good to know. It can sustain 125A charge, right? I haven't seen any JBD that are limited to 50% charge (like the Daly are) but don't want to just assume.
@sfkenergy2 жыл бұрын
@@LithiumSolar 80A is the most it can do, but the issue is many people are buying grade B cells, we don't know if its a good Idea to pump this much power into questionable cells, This is why we defaulted to 60, actually we were debating going down to 50 as the default.
@john_in_phoenix2 жыл бұрын
@@sfkenergy So far all of my grade B cells have done fine at 80 amps charge and over 100 amps discharge for extended periods. I have a busbar with two 175 amp Anderson connectors and four 50 amp Anderson connectors that I use. I can hook up two 40 amp power supplies and 4 parallel cells (for top balancing) and/or 4 electronic loads for capacity testing (40 amps at 3.65v or 28 amps at 14.2v, each). The important thing is to clean the connections each time, I have a nice thermal camera I use to spot problems. I would suggest that you up the default charge rate, those Aims chargers are popular. I recently ordered one myself, just haven't received it. They are pricey, but if you are using a generator to charge, you want that extra oomph.
@checkingoutgypsymike20752 жыл бұрын
I have everything to put mine together, i was happy to see this. When i saw 200 for the plastic box it made me not so happy, 50-75 bucks apiece and i probably would have bought a couple. It really looks nice though.
@farmerfb2 жыл бұрын
If you strip the posts they can be retapped to the next size up, been there done that. There is a ton of material in the post connections on Eve cells where they enter the battery ( we had one torn apart in a car accident while installed in an RV - Yes, it was handled as hazmat, clean up crews warned but I still saw exactly how thick those posts are, and how long) Having seen the sheer size of material in the aluminum posts, The only reason I can think of why they give us M6 size bolts/post is to keep the cells from being damaged by the force you can put on M8 or larger threaded materials. I mean it's just much too easy to put a lot of torque on a M8-10 bolt before the threads strip. I ultimately feel the small bolt/stud size is a safety feature whereby the threads can strip before the battery is damaged and this may not be true if they used larger sizes..... but tapping those post holes to M8 (or even M10) won't compromise the post material imo . It just means you have to be especially careful not to over torque the new M8 post or bolt because you now have enough purchase to twist that aluminum post structure inside the battery. Eve calls for 8Nm (5.90 ft-lb) on most 280ah products. Check your spec sheet. TL;DR I have tapped these to the next size up after a client stripped the threads out of them. I neither recommend you follow my actions or make any guarantee that what works for me would work for you.
@ToolsOutsideTheBox2 жыл бұрын
What I’d do different. Always apply the serrated nut against the bus bar. Any ring terminal goes on top of that with another nut(possibly a jam nut).
@LithiumSolar2 жыл бұрын
I completely agree and addressed this in the follow-up video :)
@Mazlem2 жыл бұрын
A 24v kit would be nice, especially with SOK having been back-ordered with theirs for so long.
@john_in_phoenix2 жыл бұрын
You can series connect these. I agree a 24v single BMS would be better, but Sun Fun Kits does have a good video doing these in series for 24v and running an air conditioner for an extended time. They even sell Anderson connector cables to do exactly that. The BMS is rated for up to 80v in series, but I personally wouldn't go above 24v, too much effort to keep things balanced.
@LithiumSolar2 жыл бұрын
As John mentioned, they do support being connected in series, up to 4 batteries or 48V. They technically can go higher but it's recommended by most manufacturer's not to exceed 48V. A single kit of 24V (one case for 8 batteries) would be very heavy, approximately 130lbs.
@john_in_phoenix2 жыл бұрын
@@LithiumSolar Yes, I am over 60, my back likes 4 of these 280AH cells much better than 8 of them! I have been going with 100AH cells over 12v, just much easier to handle.
@sfkenergy2 жыл бұрын
An updated Lid will be released by Late November, this will accommodate the taller cells without the need for adding a spacer, here is a preview: kzfaq.info/get/bejne/m6-ZpZWHxMDMpXk.html
@5400bowen2 жыл бұрын
When threading those machine screws through the top of the battery case, as soon you get enough thread out, you put two nuts on the machine screw and tighten them against each other. Then use a wrench to turn the screw to tighten it. You can get a lot of force on studs and bolts that way. Mechanics technique, called "double nutting". Then break the nuts apart and thread them off.
@jeebusk2 жыл бұрын
Jam nut
@elvindekle98352 жыл бұрын
2 nuts on the screws . Lock the nuts together . Place wrench on lower nut . Do not over tighten . Or you can use a piece of leather or plastic with your channel locks .
@brentjohnson66542 жыл бұрын
Another good video. I looked at the site in the description and they are sold out. Kind of the way it works when posting in a youtube video, they always seem to be short of supply. Nice review. I prefer to put a 12v battery together with these type of cells rather than 18650 unless I am wanting very small footprint. All the best, have a great week!
@HighTechLab2 жыл бұрын
Same BMS and bus bar as ours at Current Connected....Kinda funny!
@LithiumSolar2 жыл бұрын
Yep, I noticed that as soon as I unpacked them. LOL
@HighTechLab2 жыл бұрын
Don't forget the SOK has a 7 year manufacturer's warranty and a US based repair center.
@LithiumSolar2 жыл бұрын
This is true! There are many factors to consider aside from price, but unfortunately, price is all people seem to focus on these days.
@dankarau23072 жыл бұрын
As most of these companies will be out of business in 5 - 10 yrs (statistically speaking) their warranty's are pretty much useless, factor in the stability of LiFePO4 and a warranty is not necessary past 30 days. I certainly would not pay the $500 - $600 warranty from Battleborn.
@jeebusk2 жыл бұрын
What's SOK?
@earthenergyhex6 ай бұрын
That is very cool for a beginner like me. Thanks for the video
@davidkettell57262 жыл бұрын
I put helicoils in all my batteries before i even use them now because i know the threads will strip at the required torque. experience! a helicoil kit from amazon is inexpensive and i always use studs tightened down to the bottom of the threads and the flange nuts
@LithiumSolar2 жыл бұрын
I've heard of people using helicoils to repair the damaged threads, and it sounds like an interesting idea. I've also heard some of those resulted in melted terminals (fire risk) and don't want to go there myself. If I damage one, I'd rather recycle it and buy a new cell to be safe.
@k20nutz2 жыл бұрын
So you drill andtap the battery before you strip it? How deep do you go and did you make a bottoming helicoil tap?
@davidkettell57262 жыл бұрын
@@k20nutz I drilled the same depth about 6 mm and ground the tap so that it just had a slight lead. Used my drill press to ensure it was plumb to start the threads. 40 years as a toolmaker gave my all kind of skills I never thuoght I would use in retirement lol.
@davidkettell57262 жыл бұрын
@@LithiumSolar explain why the terminal woud melt.a helicoil is steel just like the screw or stud you put in the battery. ?
@k20nutz2 жыл бұрын
@@davidkettell5726 I can't imagine not using my tool and die experience outside of work. It's the handiest tool I have.
@bobcatt2294 Жыл бұрын
About the output of the BMS - there is a penalty of high amp chargers - it is convenient but you degrade the battery at the expense of fast charging. The lithium particles gets trapped in the anode plate material at greater rate when the charging amperage are higher. The is the problem with all types of chemically based batteries. The lower the charge, the less heat and stress on the plates or materials. Heat (while charging) also degrades the battery.
@eddiekytia2 жыл бұрын
So what does it cost in total for everything you have there and are they grade A..... great video!
@javiercoronel116918 күн бұрын
U can solder the terminal if stripped
@LithiumSolar18 күн бұрын
No, definitely NOT!!
@darrenbenson26062 жыл бұрын
Put the cables on the lid first
@amham482 жыл бұрын
The pricing is very confusing from this video. Going to to their website presents many options and the complete battery kit with all suggested options is expensive.
@LithiumSolar2 жыл бұрын
Start with the v1 kit and add in only the items you want. Also, don't forget the discount code in the video description :)
@amham482 жыл бұрын
@@LithiumSolarOf course, the fact that they are completely out of stock of batteries makes the kit more affordable!
@WesleyHovorka2 жыл бұрын
Man, I wish I knew about this company a few months ago. Making a 24V one out of a large milk create.
@LithiumSolar2 жыл бұрын
Ah, milk crate batteries are pretty neat too. I've wanted to do one for a while now but a few others have already done so and it's difficult to be original sometimes as we're all after the same components lol.
@jeebusk2 жыл бұрын
@@LithiumSolar it would be ok to make incremental improvements, or focus on different applications.
@billjacobs80352 жыл бұрын
Finally. Some ones (company) getting it !
@cbinett2 жыл бұрын
The charge limit is for the BMS not for the battery. JBD 150A wont accept charge over 50% of its capacity.
@LithiumSolar2 жыл бұрын
Where do you see that mentioned? All of the JBD BMS I've ever used can charge and discharge at 100% of their rating. That's one of the big reasons I stopped using Daly.
@john_in_phoenix2 жыл бұрын
No, that model BMS is rated for 150 amps charge, and comes defaulted to 160 amps over current. I had no problems charging at 80 amps, but I used the same model JBD that I had previously purchased.
@ValleyMustang2 жыл бұрын
You said that if you strip out the threads out of the aluminum terminals the cell would be ruined because there's no way to fix it... Actually there is, either rethread to a bigger thread or just heli coil it.
@LithiumSolar2 жыл бұрын
That might work for some, but I've heard cases of people with melted terminals (fire risk) after doing this kind of thing. I'd rather recycle the battery and get a new one than create a risk by modifying it.
@ValleyMustang2 жыл бұрын
Oh okay I got you. When you helicoil though you're not taking off a lot of material just a little bit for the new thread. Maybe do a test video to see if you can actually do something like that? 🤔 In a safe environment though of course with protection.
@quartamile2 жыл бұрын
1. Will the cells eventually bulge and put stress on connectors? 2. Regarding the vent, is there gas discharge involved, or another purpose? 3. What gear is needed for top balancing? 4. So total kit out the door with cells is over $1061 if I heard correct... how do you get $295/kWh? $1061/(12V × 280Ah) = .316 ... I'm likely miscalculating. It also seems more expensive than some other prebuilt batteries on Amazon... Are the cells and other hardware higher quality? THANK YOU SO SO VERY MUCH for all that you do!
@jeebusk2 жыл бұрын
21:00 $176 (with bms $310) $200/cell seems like a lot to me, you can buy a conventional 100Ah deep cell for under $100.
@jeebusk2 жыл бұрын
4, I get 3360 or 3.4kwh for about $1000
@mondotv42162 жыл бұрын
Excellent review as always - interesting, although I’m not sure about the plastic case for mobile use. Would have liked to see padding all the way around.
@john_in_phoenix2 жыл бұрын
So add padding to the outside. Making it out of steel or aluminum would not be easy.
@LithiumSolar2 жыл бұрын
There is space in the case to fit a bit of foam on the other 2 sides if that's the concern.
@Foxfried2 жыл бұрын
They have a molded abs lid coming out soon it is 20mm taller and is 1 piece.
@tomc.48602 жыл бұрын
This kid looks very good but when I went to Sun fun kits and looked at it to get all the parts appeared to cost over $1,000? If that is incorrect I would be happy to purchase one but I could not find 100ah battery kit for the price you were quoting. Please let me know where you got it. Thanks
@reinaldomoll2 жыл бұрын
I was interested in a smaller kit myself. I just emailed the company hopefully they respond.
@gustersongusterson41202 жыл бұрын
Great looking case. I would love to see an 8S 24V version of this case.
@cbflazaro2 жыл бұрын
i did mine off plywood, if you get like half inch ply, like a 4' by 2' the 2' lenght is perfect to make a 8s 280AH all in a single line with a little spare for padding/wood walls. I made a 280AH24v just by cutting strips on 2 4x2 ply boards, really easy if you have a circular saw
@LithiumSolar2 жыл бұрын
A single case holding 8 of these batteries would be very heavy, around 130lbs. It's probably best to have two cases connected in series. Then again, you need two BMS that way instead of a single 8s BMS, so I guess each way has pros and cons.
@DSmartLife2 жыл бұрын
Hi, great video. This is a great DIY Kit. BTW any update on the CERRNSS battery, the review I had requested earlier? Have your received the battery?
@LithiumSolar2 жыл бұрын
Yeah it's here, but haven't looked at it yet. It was delivered last week.
@DSmartLife2 жыл бұрын
@@LithiumSolar Oh great. Hope to see your review soon. Thanks so much.
@davidmills1082 жыл бұрын
Nice kit 👍 when I built my battery if I had know about this kit I definitely would have bought the kit rather then buying all components separately
@ellise.25742 жыл бұрын
The cells are butted together. I would think that they should have a thin plastic spacer between the cells.
@LithiumSolar2 жыл бұрын
That topic still seems up for debate. Some manufacturer's are using spacers, others are not.
@jakeyaboi68242 жыл бұрын
Hey man, love your channel. You inspired me to get into making battery packs. I bought some supplies from battery hookup but I am concerned about safety. Could you do a video on how you store your batteries, what safety measures you take, and what not to do? Thank you
@jeebusk2 жыл бұрын
What is your application, did you consider a conventional deep cell battery?
@huckfin11002 жыл бұрын
I watched this whole video thinking I could purchase this battery for $300 and at the end ...
@toddcotten81572 жыл бұрын
I did also ,and when i went to there website I got a very big surprise LOL I've got four more years $960 a month child support so I guess in four yesrs I will be able to purchase one and a fishing boat ( living the dream)
@jeebusk2 жыл бұрын
Yes, for most applications viewers will want conventional deep cell batteries
@darthtater2 жыл бұрын
For future reference on thread engagement, the first 3 threads take up 75% of the load.
@LithiumSolar2 жыл бұрын
Maybe, but tell that to the aluminum posts that wouldn't tighten and felt like they were pulling out :)
@darthtater2 жыл бұрын
@@LithiumSolar no doubt aluminum is soft, more engagement the better, and a threaded stud is always the preferred solution. Just providing a datapoint if you need to make a judgement call in the future. ¯\_(ツ)_/¯
@jeebusk2 жыл бұрын
@@LithiumSolar as mentioned in other comments, the washers aren't needed with the short screws.
@billarroo12 жыл бұрын
Very interesting, this is a valuable tutorial, I'm new to this type of battery, and. building this kit. So THANKS for the schooling 😃😃
@reinaldomoll2 жыл бұрын
I love this idea and would buy one in a heartbeat. Unfortunately I need something smaller just to power my kayak, maybe 100/120ah. I didn’t see anything that small on their website.
@kennedy679512 жыл бұрын
Hey those buse bars should've been mounted under the Plastic Cap Plate. Instructions are wrong and this is a Safety Issue. If you take another look at what I've said, you'll agree with me. The Buse Bars under Plastic Cap Plate helps prevent Shorts. Shouldn't be any Small Wires under the Large Power Cables. This will cause the Power Cables to become loose and possible damage to the Battery and could cause a Short and may cause Injury to yourself or someone else. You should wrap all open Wire ends with Electrical Tape so that Shorts would be prevented. Every turn of Tape around Wire ends will give a 100 Volt Safety. When ready to attach Wire ends just unwrap that end and connect. You are right about Short Wires. If a power Wire / Cable has a sharp bend and the Battery is Discharging at High Amps then the bend in Cable or Wire could act like a Resister and cause the Cable or Wire to over Heat and a possible Burn through. Wires and or Cables should have a Soft Bend to help prevent this from happening. Thanks for sharing and the upload Mate. It's appreciated by me.
@neverenuffguns76462 жыл бұрын
They need to add a set screw Allen key placement at the end of them positive and negative bolts so you can thigh them from the top instead of sticking a Allen key into the box. Just my opinion 🤷♂️
@stephsoltesz67312 жыл бұрын
The JBD 150A BMS can only take 75A Charge Max, not unusual for MOSFET based BMS'. You should have screwed down the "Grub Screw/studs" to Bottom, then BACK OFF by 1 full Turn and HOLD with the Allen Key while tightening the nut. This is done to prevent putting pressure on the bottom of the tap hole. FYI default thread depth for safety on EVE LFP Cell Terminals in 6mm MAX. Mfg Spec. Stripped Threads CAN be repaired with M6 Helicoil Thread Inserts. Worst Case Scenario they can be retapped with a proper Tap & Die Kit, but must NEVER EVER exceed 6mm hole depth. The Balancer & BMS Harness Wires. Personal Point. Both Wires (per cell) should have been put into ONE Ring Terminal as opposed to two... TIP-1: Even simple MASKING TAPE on the Hot Terminal or wire lead can save your keister from an accidental oopsie ! Only takes a second to change a Good Day to a Bad Day. Tip-2: These cases are ABS and Very Durable & chemical resistant. To Waterproof (water resistance) a thin bead of Silicone along the seams prior to final tightening of the pieces can resolve that... ** IF concerned about making a mess, using Green Painters Masking Tape, tape off around the "seams", once sealed & before silicone has set, pull the tape off at Right Angles and you will have a clean finish.
@jeebusk2 жыл бұрын
Why did he have two cell balancing systems
@mendohomepower74922 жыл бұрын
I might be reading this wrong but the cells are extra and not included in the price. When I calculated the cells into the kit it came out to $1225.00. Am I missing something?
@dobrzpe2 жыл бұрын
that's what i just found - initially i thought the $400 was a killer price! but then saw it did NOT include the cells. (which they sell for an additional $800... and don't even have them) hell, they are charging $160 just for for the BMS...
@mendohomepower74922 жыл бұрын
@@dobrzpe Correct, so it seems like LithiumSolar missed the part where the batteries aren't included in the kit???
@dobrzpe2 жыл бұрын
@@mendohomepower7492 well.. he did mention it at the *very* end... but his overall math was a little wonky (wrong). i'm just pissed that youtubers continue to use click-bait titles! there is no need for it, especially on topics like this...
@mendohomepower74922 жыл бұрын
@@dobrzpe The whole battery tear down and cell testing routines are getting a bit ridiculous. The main players all seem susceptible to free Chinese products to use as click bait. There are a few Tubers that do serious testing but they don't get the clicks.
@apocalypse4720 Жыл бұрын
Yeah i thought about doing these for my car audio system but way too high for what i need it for so I'm going with yinlong cells.
@brucey55853 ай бұрын
Very nice kit. But fully build battery prices are dropping to the same as buying a kit and battery.
@LithiumSolar3 ай бұрын
I don't disagree there...
@PoncePappas-zo1ot Жыл бұрын
I know a really good mechanics trick to get those bolts through the cover from underneath
@mausie19672 жыл бұрын
Loved your video. Greetings from Holland
@uhjyuff20952 жыл бұрын
The add on balancer is one of those active balancers. Why do you and sunfun call it a passive/resistance balancer?
@LithiumSolar2 жыл бұрын
Wow, that does appear to be an active balancer. I have no idea why they're selling it as resistive/passive then... Good catch.
@john_in_phoenix2 жыл бұрын
I just used my own active balancer (oddly enough I have the same model) to top balance the cells and removed it when doing the final assembly. The BMS does have resistive balancing and is keeping the cells well balanced.
@uhjyuff20952 жыл бұрын
@@john_in_phoenix Absolutely, the active balancers can top balance without the user to even think twice about it.
@sfkenergy2 жыл бұрын
Hi, Its a passive, we have an active balancer but the one in the video is resistance based.
@uhjyuff20952 жыл бұрын
@@sfkenergy From the manufacture's website which is labeled on the balancer... "2-17S inductance Active Balancer with LED."
@jeffbowers9502 жыл бұрын
Great video, been waiting for a solit diy kit to come to market. Thanks for taking the time to show us. ??? Any idea if they approve of series wiring to 48 volts. These would be a great upgrade to my battleborns - with 3x capacity and servicable cells and componants. Looks like I could fit 60 kwh where i currantly store 20 kwh if I am guaging the size of that case accurately. Keep up the great work, will check out your link to the kits.
@john_in_phoenix2 жыл бұрын
The JBD BMS is rated for use in series up to 80v, but if at all possible, I would recommend not doing multiple batteries in series. Too easy to run into balance problems, I personally wouldn't go over two in series for that reason. But a 24v series capable of 150 amps will supply a lot of power.
@jeffbowers9502 жыл бұрын
@@john_in_phoenix excellant, thanks for that info. We are ronning a 48 volt outback system so I am financially committed to that setup, but Id be willing to bet that BMS would perform as well or better than the battleborn BMS in a series configuration. They have worked fine for the last 4 years but Im ready for more storage capacity. Id think the BMS is more advanced and capable than what battleborn had 4 years ago. I will look into it further. Have a sunny day...
@john_in_phoenix2 жыл бұрын
I just measured mine, 13.5 inches by 7.5 inches for the bottom part, but the handles on each end make it 14.5 by 7.5. Mine with the largest spacer is 11.5 inches tall. I hope that helps you determine if it will fit.
@BobCollins42 Жыл бұрын
For me, the design of the kit has a very big negative: it appears impossible to disassemble the battery. The insertion of the cells is a one-way-trip. One of the positives for building any kit is that the builder can maintain and/or modify what they built. I hope they do better in future kits.
@YouTubeviolatesmy1stamendment2 жыл бұрын
That's a really nice kit
@MikeJordanUnCamplicated2 жыл бұрын
Nice build and review. You caused SFK to sell out 😨
@LithiumSolar2 жыл бұрын
Thanks and ooops... LOL
@thatguysayz2 жыл бұрын
Adjustable Electric Fan Thermostat Switch Radiator Temperature Control Probe Kit..probably an excellent option for bms without low temperature sensors?
@michaeldoherty22892 жыл бұрын
Would it make more sense to put the busbars on before the orange cap? Otherwise there is no protection from shorting.
@azizaviation6 ай бұрын
Great Video.
@Step-n-Wolf7 ай бұрын
BTW, those are bolts, not screws. Screw are tapered, bolts aren't.
@LithiumSolar7 ай бұрын
Ok, thanks. Lol.
@DarrellnKitty2 жыл бұрын
Could you have crimped both balance leads to just 1 ring terminal each to give you less space for the screw?
@debohannan43152 жыл бұрын
Why the ballancer? That bms is supposed to do that and if it does it would do a much better job that that little one.
@pooddescrewch87182 жыл бұрын
Ok so dumb question , I'm afraid , Why have we moved from measuring the out put in Amp hours vs the olxd Watt hours ?
@LithiumSolar2 жыл бұрын
I test batteries in amp hours because reporting watt hours is inaccurate due to not taking into account losses in the cabling, circuit breakers, BMS, etc.
@Moto2902 жыл бұрын
I wish the cells were in stock..
@zombieryder Жыл бұрын
wonder if this battery can jump start a car or truck. also you should have tried max amp draw to really test the bms.
@grythumn2 жыл бұрын
Did I miss the temperature sensor installation? Or is it missing low temperature charging cutoff?
@LithiumSolar2 жыл бұрын
The temp sensor came attached to the BMS and is pre-programmed for 0C low temp charging cutoff. You can place it where you want. You can see the black wire on the right of the BMS at 12:39. It's also covered on page 13 of the instruction manual.
@jeebusk2 жыл бұрын
That was one of my questions too
@josepeixoto33842 жыл бұрын
A good video, i didn't know that was so complicated... and so expensive; not entirely interested yet; we really need a different and better battery technology; my four "solar" 160Ah lead acids cost 150 each, they are now 4 years old,on my 1.5Kw solar system,6 panels, and they still work perfectly; the key is to have them oversized for the needs and they may last a decade.
@nesbitttom Жыл бұрын
you will have much more success with the studs if you use jamb nuts to tighten. but good video
@loucinci39222 жыл бұрын
3-D printed case. How stable is it. I have not worked much with 3-D plastics. I understand the instructions say to connect the cables the way you did, but could you connect pig-tails to the lid first, then connect to battery/BMS? I bet they are still too short. Thanks for sharing.
@EdwardTilley2 жыл бұрын
Great idea and good kit - but, "Configuration Price" at the website - with Eve cells, is $1,310 US - so a bit of a bait-and-switch really. If you want to sell DIY battery kits, you also want to go to some effort to explain: 1) How to get 4x280 Eve cells for less than $800 2) What "Configuration Price" means and why is it $300 more than "Regular Price" (this part of the checkout is very off-putting; I highly recommend changing this at the web page) The compression solution here is "great" (if, assuming that, the plastic tub is strong enough to hold it as cells naturally swell over years). I didn't call it a "great" kit because: 1) of the wiring issues you noted, 2) both terminals are both at the same end (I just don't like that), and 3) the fixed bridge bars don't have flex as other double-layer "middle-bend" bars do, so they are fixed as the cells swell 4) I didn't see a low-temperature cutoff Anyone going to KZfaq knows how to DIY a battery, and how to get recommended parts too by now, so this kit has to make it painless and inexpensive to prefer their solution. It is worth paying more for a kit and vendor that: 1) screens cells to ensure they are "perfect" - as they should be (not swollen, used, or too old as you commonly find on Alibaba) 2) ships a great, low-cost, BMS, Bluetooth, and Charger - which this does... 3) has freezing temperature cutoff BMS (I didn't notice a freezing temperature cutoff here on the BMS)
@LithiumSolar2 жыл бұрын
> If start with the v1 kit and add the BMS and cells to your cart, then add the 10% discount code, it comes to $1061 and ships free. Did you add something else or maybe select the $1375 kit that includes additional items? I don't see any bait-and-switch here but there a lot of products/listings that could probably be sorted better and made more clear. > Completely agree regarding the "middle-bend" busbars, they would be much better than the rigid bars that won't give in the event of excess swelling/failure. > It does have a low-temp cutoff pre-programmed for 0C. The temp sensor is the black wire coming off of the right side of the BMS. I didn't mention it in the video, but it is there and is included in the instruction manual.
@wwg-worldsworstgamer66782 жыл бұрын
Even at $1000 it’s still more than a battleborn that is fully assembled and has a 10 year warranty. Why spend more to do it yourself. That’s dumb.
@LithiumSolar2 жыл бұрын
@@wwg-worldsworstgamer6678 BattleBorn is $900 for 100Ah. This is 280Ah, that would be $2520 of Battleborn...
@s.v.gadder14432 жыл бұрын
You can retap the threads, i.e. not ruined
@LithiumSolar2 жыл бұрын
I would never do that. Too much of a fire risk, just buy a new battery...
@massa-blasta Жыл бұрын
not sure these Sun Fun Kits are still worth buying, considering the price drops in lithium batteries. Local to me, tho.
@reubenj.cogburn85462 жыл бұрын
I can't believe they put together such a wonderful kit, that lacks low temp charging protection.
@uhjyuff20952 жыл бұрын
omg really, that is a shame.
@LithiumSolar2 жыл бұрын
Yes, it does have low temp charging protection. It's pre-programmed to 0C and you can change it, if desired.
@reubenj.cogburn85462 жыл бұрын
@@LithiumSolar oh, I'm sorry. I must have missed where the temperature leaves were attached to the pack. I didn't see them listed in the parts included portion of the video either.
@jamilislam24212 жыл бұрын
What Instrument did you use for Capacity checking?
@ssoffshore51112 жыл бұрын
Nice setup. Any issues with connecting 4 in series to make a 48V system?
@LithiumSolar2 жыл бұрын
Nope. In fact, they sell a 4-pack intended for a 48V setup :)
@timmyers3428 Жыл бұрын
did not see if the bms had low temp and hi temp cutoff?
@LithiumSolar Жыл бұрын
Yes, it has both
@jeffchristensenm.a.693011 ай бұрын
I'd like to know where to get a battery box similar to the one you used. SunFun does not show them as a separate item to purchase.
@offgridwanabe2 жыл бұрын
I like this one and if you had your own printer it would be easy to make too bad the bms doesn't have active balance.
@alanosborne19472 жыл бұрын
I would love to do build my own battery but I fail to see the cost saving over buying a competitors drop in ready battery! I can buy an Enjoybot 12 volt /300AH for $999.98. It is out of stock but so are the Eve cells used to build the Sunfun kit! What a dilemma!!
@jeebusk2 жыл бұрын
What is your application ?
@Mailmartinviljoen Жыл бұрын
Shouldnt there be a small gap between the batteries ? To compensate for expantion which could lead to friction causing abration between the cells.
@wallacegrommet9343 Жыл бұрын
Some lithium cell manufacturers recommend compression of the battery pack. It is said to reduce damaging expansion cycles and increase recharge cycles
@Mailmartinviljoen Жыл бұрын
@@wallacegrommet9343 thanks
@alanvogt21822 жыл бұрын
I love the thought that has gone into this kit but the freight to Australia is killer. A shame... I'd have liked to buy a few kits.
@jeebusk2 жыл бұрын
For what application?
@KowalskiBrothers2 жыл бұрын
@@jeebusk batteries in a van conversion
@rodelmark6892 жыл бұрын
Sana all may free send hahaha
@AdministrativeReload2 жыл бұрын
Does that BMS have low temp cutoff? Frustrating that there are so many BMS out there that don't have it so you always have to ask🙄
@LithiumSolar2 жыл бұрын
Yes, it has low temp charging protection and is pre-programmed for 0C. The temp can be adjusted by the user, as required.
@mightyhippy11 ай бұрын
newbie here, but the kit and cell cost more than already build battery, am I missing something?
@jedijakobi89782 жыл бұрын
Iv re tapped alot of licence plate holes , could you not re tap the battery post if stripped? Not sure cuz its aluminium..
@douglasmontgomery63152 жыл бұрын
I did not see any mention of temperature cutout. Is there a place on the BMS to plug in a temp sensor?
@LithiumSolar2 жыл бұрын
It has a temp sensor and is pre-programmed for 0C charge cutoff. This can be changed, if desired.
@douglasmontgomery63152 жыл бұрын
@@LithiumSolar , Hmm...I did not see you attach a wire (temp sensor) to one of the batteries or tape it to the side of opne of the batteries. Is it on the BMS board it self? If so, I think it's been proven that a board mounted, since it doesn't touch one of the battery cells..is not as accurate. Please advise...and thanks
@LithiumSolar2 жыл бұрын
@@douglasmontgomery6315 You can see the two black wires coming off the right side of the BMS at 12:40. Page 13 of the manufacturer's instructions www.sunfunkits.com/MediaStorage/Product/Documents/Document/1_20210924150120163.pdf includes mounting recommendations.
@douglasmontgomery63152 жыл бұрын
@@LithiumSolar , thanks sir !
@Foxfried2 жыл бұрын
You tested these wrongly as well, it is 3601 / 12.8 = 281.32 AH / cell not as bad as the 18650 but again not 286AH. Why do you keep looking at amps going in as the capacity? Ask an electrical engineer if you don't believe this is how capacity is calculated: Watt-hours / nominal voltage.
@LithiumSolar2 жыл бұрын
No, I did not test them wrong. Batteries are measured in amp-hours. That's the data you'll see on the manufacture's spec sheet. Your method of taking watt-hours and dividing it by nominal voltage does not work because the watt-hours reading calculated by the shunt does not take in to account losses in the cabling, losses in the BMS, etc. That's why the amp-hours reading is more accurate.
@robertdillon99892 жыл бұрын
Are you guys kidding me, the kits $195 that’s not including cables or Bms and then the batteries are $995? If they even have them ! Come on. You guys get things free but we all can’t pay battleborn prices! I’ll stick with battery hookup thankyou
@tomcop6682 жыл бұрын
What about low temp cut off?
@LithiumSolar2 жыл бұрын
Yes, the JBD BMS sold with this kit has low-temp protection.
@blacksabbath122 жыл бұрын
wouldnt it be neater if busbars go under the orange top?
@john_in_phoenix2 жыл бұрын
I actually played with doing this. Simply put in the bottom plate upside down, and you can do it.