Quote Originally Posted by DFBrews View Post
Grant do you spot weld your own cells?
For this solar stuff, no. I am using 280AH CALB cells.

The only picture I have quickly available, from when I was moving it to its new home in the garage.
rebuild by ARNEWB, on Flickr

For other projects (solar power for cameras in the back yard, lights in the shed, E-Dirtbike, etc) yes. I build and weld my own packs of 18650 and 32650 Li-ion and LiFePo4 cells. I have a number of cheap spot welders, one that I built, and then I also finally bought a k-weld. I got into salvaging cells for a while, and considered building 48V arrays for the house solar (not as crazy as HBPowerWall on Youtube, but similar idea). Way too many battery packs disassembled and cleaned up... Last count, I think I have 3k+ 18650's that I pulled out of "failed" laptop batteries...
9x 80 cell packs when I was planning a 14s80p 48V battery.
Salvage 18650s by ARNEWB, on Flickr