My golf cart at the beach is run on 48V. The set up is six 8volt batteries wired in series.

When the charger goes on, all the batteries seem to come back to a individual reading of just over 8.6 volts.

I suppose if one battery has a bad cell, that battery will reach it's limit, but will not hold that limit.

All I know is, the charged shuts off automatically, and all is well once again...

At least for about 5 to 6 years, and then it's time for another $700.00 or so in batteries...