Ripped Off

[Ampster]

+

 

[OnTheRoadAgain]

SOK and a few other LFP batteries have openable cases.

in those cases, is there any warranty restriction to opening them and taking the cells out etc?

 

[OnTheRoadAgain]

I would double check connections. Most of my early suspected bad cells were bus bar issues. Clean terminal tops and bus bars.

Agreed.
This "could" have been the problem I had with a recent sealed case LiFePO4. But no way to check.

 

[Ampster]

Sometimes I inadvertently respond to very old comments without realizing how old they are. I deleted my comlent because the OP found a solution.Yes it is a different issue with a sealed battery.