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post #3 of Old 10-31-2012
Maine Sail
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Re: Question about unevenly-sized battery banks

Originally Posted by MarkSF View Post
With the modern distributed-power chargers (I have a Xantrex TrueCharge 20A) is it acceptable to have unevenly-sized banks?

I would like to have two group 24s on one bank, and a group 27 on the other.

I currently have two 24s and two 27s which are on their last legs. To save some weight I would like to ditch one of the batteries. (adding a 60lb outboard to the stern rail so losing one battery would keep her on her lines)

Mostly daysailing so don't need a ton of capacity.
Not an issue the current will flow where it is needed. However, despite having two outputs you still only have one charger and one voltage.

Because you only have one charger, mixing lead acid battery types such as GEL and Flooded or a battery that needs 14.8V, such as some Trojan deep cycles, and a battery that only wants 14.4V becomes problematic and you either over charge one or under charge the other. If the batteries take the same voltage, no worries..

-Maine Sail / CS-36T

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