I got 8pcs 304 CATL from Amy last week. Very well packed, cases in mint condition, all 3.28 volts
I charged them in series thru my Overkill BMS to 28.5 volts.
After that I disconnected my BMS and changed the connections to parallel and charged them till my power supply we to 0.10 amps @ 3.65 volts.
The 1st cell load tested produced 315 ah ( 2.50v shut off), a second one is running right now.
One thing that stands out to me is your starting voltage on the pictures you posted is all over the place.
My understanding is LifePo4 need to be at least 3.45 volts to be close to fully charged.
Am I doing something wrong or what am I missing?