What do you do with your boat batteries?

[wiperhunter2]

Thanks Scott, I did not have anything in writing on how to test my on board charger but when I noticed it did not seem to be working right I tested it the way you indicated and found that, with the three bank charger I have on my boat, they all have different readings[crazy]. The lights that indicate the state of charge of the batteries do not seem to work correctly as well. They will stay on yellow when fully charged or go off, not sure what they are suppose to do but I'm sure they should all be the same color, when fully charged.
Do you think the best way to test the charger is to disconnect all charger leads from each battery before you check them individually?
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