16 Pack Samsung IFR18650-11Q 3.2v 1100mah Lifepo4

Just $1 per cell with a BMS and 24 awg wiring on each cell.

We didn't know Samsung made 18650 lifepo4 cells but we sure are glad they did. Samsung is such a trusted, quality battery brand. If you want to build a smaller lifepo4 battery pack we have these batteries here in packs of 16. So for this price you get 16 cells which you can build into whatever you want. Each cell has a 3a bms on it which can easily be removed. If you don't have a spot welder you can actually just use the wires on these to build your pack. They come with shrink wrap around them which you can easily peel off if you want to just recover the cells from the packs. We tested a few hundred of these cells before and they tested amazing so they were likely only cycled a few times.

Specs are in the 2nd photo. What's nice is these can push 10 amps continuous on a discharge so you could really build a nice compact battery that can push out some power.