ABS Battery Box for 8S 280 ah 24 Volt Battery

chrisski

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Looking on Ali, there are loads of 4S battery boxes for 12 volt packs, even a couple that may fit a 8S pack, but definitely not an 8S pack with 280 ah cells.

There are batteries that way in at 100 LBS, which is about what my 8S pack will be, but no pre-made ABS case I can find. The shell of these 100 LBS batteries would make a good 24 volts 8S 280 ah case, just cna’t find it for sale.
 

Stepandwolf

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Hahaha, 13.78" is just approximately 2 inch more than that a foot, that won't take the cell bro
my 8 cell battery is 12X14....fits easily with room for BMS... I am not saying it works for everyone's battery, but I thought it was appropriate for the battery pack being discussed.
 

chrisski

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8 cell battery is 12X14....fits easily with room for BMS... I am not saying it works for everyone's battery, but I thought it was appropriate for the battery pack being discusse
My requirement makes this a bit hard. I have a 24” X 24” Inside diameter I am trying to fit 16 batteries set up as two 8S batteries, There is room to place three rows of 8, with about 1/2” on each side before the cases are built.

Two boxes that you mentioned just would not fit. One would.

When this is done and the install is complete, that 24” X 24” is a slide out battery tray, and if I just remove that tray, there will be a lot more room. Would make asembly harder than I’d like, but still doable.
 

nlebaron

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Sep 30, 2021
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Hi, I found these boxes on Ali Express. Would they serve your purpose? I am planning a big project for 40+ kWh DIY battery bank with similar, if not the same cells. I'm considering these boxes. I am wanting to do 24v 230 Ah 8s packs. Planning on using the overkill solar 8s BMS.

The box in the link is the wrong size (way too small) but if you scroll down you can see they have many size options.

I'm looking at their 200 Ah or 250 Ah enclosures which measure 485x370x270mm and 500x370x260 respectively. Which one to choose depends on how much extra room is needed for BMS etc.

Here is the link

Hope this helps.

-Nate

P.S. Is burying your batteries a thing for anyone here? I had never thought of it but actually kinda am liking the idea if the boxes hold up... being buried a couple feet deep here might really help regulate temps as anything a foot deep won't freeze in our mild winters.
 

nlebaron

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I don’t see a link, but those are too small for the 280 eves.
I embedded the link in the word "link" and also specified 230 ah cells. They have boxes bigger than what I posted dimensions of. If you need an enclosure for 280 ah I think they have a size that would work.

-Nate
 

nlebaron

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Sep 30, 2021
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I apologize... I'm not sure why I thought your cells were 230 AH like the ones I plan on using when you clearly state several times that they are 280 AH. The next size larger in the boxes I am looking at has inside dimensions of 560x520x270. Maybe just barely too big... can't win... :D In that box I think I could build a 48v 230 AH or a 24v 460 AH pack... either way... huge battery that would weigh a tad over 150 pounds.
 
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chrisski

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I am looking at has inside dimensions of 560x520x270.
That's the same issue I'm having the Dimensions I have would be an inside dimension of no less than 572 mm X 174 MM. The widest I saw had an inside dimension of 540, not big enough. So the one you found was a tad bigger.

For weight, I'm coming up with 95 LBS for the cells alone for an 8S 280 ah battery.

After looking back on this build, I would seriously consider making my build around a ABS case. The case and hardware recommended here: https://solarsupplyhouse.com/product/abs-battery-box-for-lishen-272ah-or-eve-280ah-prismatic-cells/ is way too much for 4 batteries at about $150 for the case and wiring, but I think I saw the same case with connection hardware included on Ali for 1.3 the cost.

This case is turning into taking a lot of time for this project. Was the same way with the vented case for my flooded lead Acid Battery for 4 golf cart batteries. No-one makes vented cases that big so that was about a dozen trips to five different stores with the actual case coming from a plastic manufacturer in Canada.
 

chrisski

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Any links to the 12v 4 cell option from Ali? $120 is crazy expensive for what you're getting.
I wish I'd kept the links. When I was searching for my 572 mm X 174 MM ID box, I saw a few links that looked just like the ones in the above link. One or two had hardware. This may be an example, but I don't see the hardware kits as I did in some.


A search for "280 EVE ABS Case 12 Volt 4S" on Ali gives me what looks like a lot of cases like on the first site, but I'm not sure of the minimum purchase quantity, delivery time, etc. If I were to start over, I'd be contacting the seller for a quote and some questions. If I started over now, I'd have to purchase four 12 Volt BMSs and get rid of the two 24 volt I already have.
==========================
Besides the $120 case from the solar supply store linked in post #27, the rest of the story is a $30 assembly kit they actually offer:
That is the hardware kit I mentioned that I don't see on the Ali site I linked.
 

nlebaron

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Sep 30, 2021
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It would seem to me, and I am new to all of this so I could be wrong, that you could find a way to config your 8s pack in the dimensions I posted... The problem is now its encroaching on the size limit you specified. I'd be tempted to get one and modify it ito fit.
 
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