Forum Discussion

ron_dittmer's avatar
ron_dittmer
Explorer III
Oct 13, 2014

Batteries: Two-6V In Series, or Two-12V In Parallel ???

Before spring I will be replacing our two 12V Walmart coach batteries. Our 7 year old rig has it's original Tripplite 2000 watt inverter/charger similar to THIS ONE. I was thinking of replacing the ...
Class C
Matt_Colie's avatar
Matt_Colie
Explorer II
Oct 14, 2014
Please believe me. This is what I successfully for expensive boats before the Depression slammed us down....
Lead/Acid (LA) batteries do not like to play nice in parallel. One will hog the charge current and you are lucky if you end up with AH rating that is 1.75 the total. If you do not charge them separately, then 1.5 is the best you will probably see. That is only if the two jars are identical - like sequential serial numbers identical. Paralleled 6V jars do not have this problem.

Matt

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