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- Grit_dogNavigator IIIf you haven’t done anything to your newish RV, 99% theyre 12V. You should look at them. They say right on the battery.
Even If you do have 6V in series, you still have a 12V system. - BB_TXNomadIf the batteries have vent/filler caps, a 6 volt will have 3 caps and a 12 volt will have 6 caps.
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