12.8v 6.4ah 82ah Lifepo4 module with 10a BMS
Here are awesome little 12v 6.4a 82ah lifepo4 battery packs. You get a quality 10a Lifepo4 4s BMS and 8x 26650 3.2v 3200mah lifepo4 cells for just $24.99. These are used packs but still in great condition. We tested every pack and confirmed the cells are balanced so you are guaranteed to get a working pack. The cells seem to be a generic brand but these packs were made for a popular company so the cells should be decent quality. We also tested a few packs and they were between 80-100% capacity.
You will get wire leads as well so connecting these couldn't be any easier. Just parallel as many as you want to build a nice modular 12v battery. Make sure the packs are within 0.2v of each other before connecting them in parallel.
Fully charged module - 14.6v
Fully discharged module - 10v
Recommended max continuous discharge - 10a (1.5c)
Recommended max continuous charge rate - 6.4a (1c)
Weight - 1.75 lbs.
Dimensions - 5.25" x 2.25" x 2.50"
The main wire included is 18 awg silicon wire which is rated at 10a. Most packs have 2-3 inches of wire lead so you can make an easy connection. A good rule of thumb is 100w per pack. If you have a 300w 12v inverter then 3 packs in parallel will be perfect.