I have just received 16 320Ah LifePo4 I bought from PWOD. The seller specified new grade A batteries. After inspection at arrival, all batteries had no visual transportation damage, but it was obvious that the sides were not flat and most of the batteries were swollen to some extend. Placing them side to side, there was a gap ranging from 3 to 7 mm between the cells. Very concerned about this issue, I told the seller and replied me not to worry and to check whether the voltage was the same, which it was (3,27 V). Should I be concerned?
One other thing that worries me is that I charged one of the batteries to 3,65 volts at 5 amps charging rate (very moderate). I left the battery unconected and the next day, the battery voltage had dropped to 3,51 volts (from 3,65 v to 3,51 in 10 hours). Is this normal? I have not charged any of the remaining batteries yet.
Can you give some advice, please?
One other thing that worries me is that I charged one of the batteries to 3,65 volts at 5 amps charging rate (very moderate). I left the battery unconected and the next day, the battery voltage had dropped to 3,51 volts (from 3,65 v to 3,51 in 10 hours). Is this normal? I have not charged any of the remaining batteries yet.
Can you give some advice, please?