Avoid AliExpress "LiitokalaVariCoreFlagship Store" from "$433 280Ah LiFePO4 Cells Tested: Cheaper than lead acid!" video

[OM617YOTA]

Just got confirmation from my credit card company, they found in my favor. Credit previously issued temporarily has been made permanent, and I get to keep the batteries.

 

[Will Prowse]

Fantastic!

 

[michael d]

Will uses a CBA.

Computerized Battery Analyzer - West Mountain Radio

The CBA is much more than a simple battery voltage tester or a battery load tester. Unlike a simple load tester the CBA will test virtually any type or size of battery, any chemistry, any number of cells up to 100V. For the first time and for a reasonable price, anyone can do scientific tests of...

www.westmountainradio.com

I use a EBC-A40L.

Thread 'Fast/Large capacity cell tester.' https://diysolarforum.com/threads/fast-large-capacity-cell-tester.22105/

I just ordered one of the EBC-A40L this morning. hope it is a good investment to test and fine-tune things a bit.

 

[Just John]

I just ordered one of the EBC-A40L this morning. hope it is a good investment to test and fine-tune things a bit.

It's not cheap, but it does a great job of capacity testing cells accurately and relatively quickly. Then you can use the results to sort cells for multiple packs.