You need two chargers or a 2 bank charger for your situation. You do not want both batteries connected together because they will discharge into the weaker battery. I found Deltran chargers website (batterytender.com) to have a lot of useful information. I'm not sure about your chargers specs but you want a "smart" charger that drops off when your battery is full.
If you use the charger shown, you need to charge one battery at a time.
Last edited by srock; 05-24-2010 at 11:24 AM.
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