Multi meters can be miss leading lol. You need a good old drop tester to put a load on it then test how many volts are in it.
And 12.2 volts is a battery in a state of discharge. If I remember right a 6 cell 12 volt battery fully charged is about 12.72 volts.
Last edited by ajamesc; 24-10-2016 at 08:45 PM.