charging batteries

Quote:
I was thinking maybe placing the positive lead of the charger to the positive side of one battery & the negative lead of the charger to the negative side of the other battery -?-
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That is todays proper way to do it, but just so you know,.....if all connections are perfectly clean and making good positive contact, there is nothing wrong w/ connecting to just one of the batteries.
And if all the connections are not clean and making good contact, they should be, because if their not, the batts will not charge properly no matter how you connect the charger.

Moved from Forum Technical Support

Are your batteries 2 - 6 volts connected in "series" or 2 - 12 volts connected in "parallel" ?

I have the same set up as you and just hook onto one battery as they are connected and both will charge. Cut your charging amps in half. I bought an automatic charger to use with my generator. So far charges fine and quick

Together is best. If spending money get a 40 amp portable. Even better is to just upgrade the existing converter to a three stage unit.

Mark, GOOGLE 12Volt side of life, read and learn

daddyfarlessa wrote:
I was thinking maybe placing the positive lead of the charger to the positive side of one battery & the negative lead of the charger to the negative side of the other battery

that's the way to do it.