Needs BMS - Inventus 12.8v 44.8ah 573.44wh U1-45 Lifepo4

These batteries are balanced but they need a BMS. You can easily remove the lid with the bolts, add your own 4s BMS, and reuse the case. The 4 series of cells inside are balanced and there is already a balance lead wiring harness. Replacing the BMS is very convenient on these packs. Or you can series them and add one BMS.

We inspect each battery and make sure each group of cells are balanced.

Dimensions are 8" wide x 5.25" deep x 7.25" tall

Specs are in the 3rd photo.

Recommended max 30a BMS.