280 aH cell needed

[400bird]

I picked up a pile of used 280 aH cells from a member here.

Turns out one more than expected was damaged and needs to be replaced. It has a popped vent.

These are the blue Eve 280aH with the single threaded stud/hole on each terminal.

Anyone have a good spare cell they'd like to sell? Ideally, somewhere in the middle of California (Bay Area, down to Fresno, up to Sacramento) or anywhere.

Or any suggestions where I can get a reasonable priced low quantity of cells with the old style terminals? Seems like everyone has switched over to the rased dual hole style terminals.

Thanks.

 

[Steve_S]

As far as I know, Cells with Tapped holes are pretty much impossible to find, I had to replace one such and I had my supplier search Hi & Lo without luck. You can still use a cell with a Welded Post without issue. If using a Solid Busbar you will need to add a Step ___/---- into it to compensate for the 3mm contact point. Alternatly the flexible mesh busbars work a treat for mixing cells with tapped holes & welded studs.

I believe Luyuan still has B Cells with welded posts and likely a few others can get them as well but likely to be B cells.

The mesh bars generally are left "open air" which I personally can't abide, so using 3/4" 2:1 Heatshring with adhesive sealant is an excellent solution BUT has to be done slowly & cautiously and once heated & soft, have to be pressed flat or they can quickly "squish" the mesh. See photo below as an example.

 

[sollap]

Ezeal has Grade A with welded studs: https://ezealco.com/product/eve-280ah/

 

[SparkyJJO]

Gobel has 280Ah cells with single studs, so they say (can't vouch for them, just been looking at various places).

USA Stock High Grade A EVE 3.2V 280Ah Rechargeable LiFePO4 Battery Cell

Lifepo4 Cell, 3,2V, LiFePO EVE 280ah, 6000 Cycle Brand new EVE 3.2V 280Ah Cell with original QR. EVE 280Ah LiFePO4 Battery Cell CAD Drawing with Dimensions and Main Parameters EVE 280Ah LiFePO4 battery cell is 3.2V LFP battery, widely used in home solar energy storage system, and it has been...

www.gobelpower.com

 

[400bird]

Thanks for all the input! I too, thought these were long gone. Gobel shows backordered with an ETA a couple weeks out.

Ezeal says they're in stock and ready to ship, with way more reasonable shipping than I expected.
I'll probably double check the other 47 cells and place my order for 1 later today.

If using a Solid Busbar you will need to add a Step ___/---- into it to compensate for the 3mm contact point. Alternatly the flexible mesh busbars work a treat for mixing cells with tapped holes & welded studs.

I appreciate the heads up. I've got a handful of the multilayer, laminate bus bars. I may bend one of those to work here.

I believe Luyuan still has B Cells with welded posts and likely a few others can get them as well but likely to be B cells.

I'd rather ship order from US stock, I don't want to wait 3 months for a single cell

The mesh bars generally are left "open air" which I personally can't abide, so using 3/4" 2:1 Heatshring with adhesive sealant is an excellent solution BUT has to be done slowly & cautiously and once heated & soft, have to be pressed flat or they can quickly "squish" the mesh. See photo below as an example.

Well, that's great advice too! I also have a handful of these and wasn't going to use them for exactly that reason.

 

[Steve_S]

I've started to use the mesh ones with my older cells that I am transferring and they are really quite good. Their resistance is also only 0.12mOhm which is as good as the winner pure copper bubars most provide. Unfortunately I could not get ones long enough to use for the X-Bar across the two rows of cells, so I had to use Solid Copper for that.