I'm sure some people want to know how much power these AMP20 cells have when compared to other known batteries.
I rounded up a Snap-on battery tester, some optima batteries, my 20+28 cell 26650 packs and my new AMP20 cell stack.
I tested 4 of my AMP20 cells in serries, temperature was 60'F test voltage was 13.1v and they tested as having:
Canking power equal to 2/3 the cranking power of a new 800CCA optima red top battery.
80% of the rated cranking amps of an optima battery. (new optimas put out about 20% to 25% more CCA than what they are rated for)
The combind out put of 48 size 26650 "2.3Ah" cells configured for "12v" (7 rows 4 cells deep, 7x4 cell battery) charged up to 14.4v @ 75'F.
These 4 AMP20 cells are only half my battery I am building.
Also, I have not charged these cells, I tested them straight out of the box and I do not believe they were fully charged.
I believe full charge for LiFePO4 to be between 14.4 and 14.8 volts.
1984 chevy suburban, custom made 6.5L diesel turbocharged with a Garrett T76 and Holset HE351VE, 22:1 compression 13psi of intercooled boost.
1985 chevy camaro mostly stock.