I've inherited a 110v battery pack that used to be used for a solar array made of 34 each 100 amp hour LiFePo4 3.2v for a nominal voltage of 108.8v all together. I'm getting about 90v total from the leads off the pack, so I know that it's severely undercharged. I'd like to take them all apart and diagnose each one to see how they're doing.
What is the correct procedure to safely disconnect each battery from their series set up? Do you need me to supply pictures to better show how the batteries are wired? I'm asking because I've only dealt with 12v Lead Acid Deep Cycle batteries so far, 10.9% of the 110v I'm getting into. If I can safely recycle any of these for another project I'd be elated.
(As for the batteries, the last time they had a full charge was 3 weeks ago, they've probably only been through 300 cycles @ 50% discharge and the reason they're discharged right now is a human error... they were left attached to a DCDC converter :-( )
Thank you all.