New LiFePO4 batteries gaining capacity after a few charge/discharge cycles?

[Mattb4]

Perhaps I am seeing something that is not there. I researched whether LiFePO4 batteries had a breakin period where they became more efficient (higher capacity) after a few cycles and everything I found indicated that does not happen. Yet when I added additional batteries to my system they seem to have more charge after a few days of operation. I can not prove it since I did not do a capacity test when I first got them. So any later capacity testing has nothing to compare with. Has anyone else noticed a similar occurrence?

Maybe the battery gods saw fit to reward their faithful servant.

 

[McKravitts]

It could just be taking some time for the BMS's to do their job and balance all the cells.
Although it never hurts to pray to the battery gods.

 

[Ampster]

I agree, as the pack becomes more balanced it is no longer limited by a runner cell that probably causes the BMS to cut off charging prematurely.