I have four batts on my boat, one is used for starting the boat and the other 3 are used for the stereo. They are all maintenance free batteries and I am looking for a charger that can charge all three batteries at the same time, I should tell you that the three batteries are connected to the 2nd position on the Perko switch. I currently have a Sears charger that has the option for maintenace free and will charge at 2 and 10 amps, but I don't know if that is enough to charge all the batteries over night, or if I should be even using that charager. I don't necessariley need something that mounts inside the boat, and was wondering if I need to charge each battery seperately even though the three batteries are wired together some how.
Any help would be appreciated.