4s Lifepo4 Battery with Balance Leads - 12.8v 3.5ah 45wh

These batteries each have 4x 3.2v 3500mah cells inside. They are in 4s1p configuration. The balance leads are there so you can add your own BMS. The main positive and negative wires are 10 awg so it appears these little packs can handle up to 30 amps but that is not confirmed.

We check each battery to make sure all the cells are balanced and have good voltage. They are not capacity tested. These would be nice for smaller projects and you can easily add a little 15a or 30a 4s lifepo4 BMS to them since all the balance lead wires are there for you.

Weight is 0.95 lbs.

Dimensions are 6.5" x 1.75" x 1.25"

Each cell fully charged would be 3.65v and fully discharged would be 2.5v. Not sure what brand of cells are inside. These appear to be made for drones. You could, in theory, charge each pack up then put them in series to make little 24v, 36v, or 48v packs then add a small 15-30 amp BMS to that pack.