To pull this thread back on topic. I have a Zippy lipo which I bought a while back and have yet to use, just whacked it on the charger to see what's up and one of the cells is does not look too good.

1.02v
3.81v
3.80v
3.81v
3.81v

It is a 5S 4000mah. Is there a way to resurrect the flat cell? What is the recommended procedure?