Can you really wire a battery bank of deep-cycle gel (or AGM) batteries in parallel to act as "one big 12V battery"? I always thought that car batteries (even deep cycle) would discharge each other somehow, and that's why battery isolators are required in marine applications where you want to charge both batteries.
In my boat I can select Bat1, Bat2, or briefly, BatAll and both batteries get charged via a battery isolator between the alternator and the batteries, but this has a voltage drop due to the diodes used.
If I have 4 AGM or gel batteries, but only a 12V charge controller, can I really connect the charge controller to 4 batteries connected in parallel?
Thanks!
Dave
In my boat I can select Bat1, Bat2, or briefly, BatAll and both batteries get charged via a battery isolator between the alternator and the batteries, but this has a voltage drop due to the diodes used.
If I have 4 AGM or gel batteries, but only a 12V charge controller, can I really connect the charge controller to 4 batteries connected in parallel?
Thanks!
Dave
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