100 a/h Lithium Battery for $21?

BurbMan wrote:

otrfun wrote:
As for the price, well, as they say, if it looks too good to be true, it probably is :)

Completely agree, it's a super low price. I was hoping maybe somebody already ordered these so I wouldn't have to be the guinea pig...

Although as the tech improves, costs come down. The same 100 a/h 12v LiFePO battery under the Renogy brand is $849 at Home Depot.

Not everything that comes out of China is junk, I know folks here have reported excellent deals if you're careful about what you're buying. It's unlikely that this 4-pack of batteries fits that bill, but what's a good LiFePO battery to look for?

There's a number of decent 100ah lifepo4 batteries for sale on Amazon for less than $400. I'd suggest looking for those with a max continuous discharge current of 100a. Some are only 50a, which generally indicates a less capable BMS and smaller internal wiring. Also, low-temp protection is a nice feature to have. Youtube has some excellent teardowns on some of these units you may find useful.

Quite a few folks here are always on the lookout for the latest and greatest lifepo4 deals. Hopefully they'll chime in shortly :)