Senior Member
Joined: 11/12/2020
Location: CanadaPosts: 138
| Posted: 03:19am 31 May 2024 |
Battery upgrade
So Initially, I had purchased 10 battery packs, which were made up of 96 A123 anr26650m1a/b cells in a 12s8p configuration.
I wired these into a 24s40p configuration yielding about 5kw of usable capacity.
I charge these batteries to 3.4v per cell, and discharge to 3.08v per cell.
Over time, I discovered that these batteries were used on hybrid busses, and I found the actual company who were removing them from busses.
So I bought one of the decommissioned "modules" from this company for just under $500.
This module contained 16 packs which I removed. After removal, I recovered just over $120 in steel, cast aluminum and copper.
Some pictures:
Module with cover removed
I added 2 packs to the original 10 and put them into a box.
I used a cheap battery capacity meter, and a 80v 100a fuse. Each cell is rated at 50a continuous,
so theoretically this pack could deliver 2400a continuous until it melted into a puddle.
This left 14, which I still need to connect and put into a box.
Some further info on these batteries.
