0

I read that a battery with a dead cell would not charge above 10.5 volts? However if each cell is 2 volts wouldn’t it be more correct to say a battery with a dead cell will charge up to anything between 10 and 11.9 volts?

2

Typically, a battery with a dead cell, when fully charged will show the 12.5+vdc as you'd expect. However, once you put it under any type of heavy load (ie: trying to start the vehicle), the voltage will drop down to ~10.5vdc. There is usually a small amount of charge in the cell at first, but is soon wiped out after the battery is put to the test.

1
  • With no load/current flow , it will pretty much show 12 v, it is a chemistry thing. – blacksmith37 Sep 26 '20 at 16:40

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.