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Old 12-19-2014, 02:00 PM   #31
Kahuna
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Join Date: May 2010
Location: NorCal
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Default Re: Starting with 12v running with 6v

What 40cpe has mentioned re overcharging one battery and the discharge of another I believe is true.
When I was going to try this myself (2 12 volt Odyssey batteries), I did a bunch of research and the final answer from some real smart folks said that the drawback was the lessening of service life of both batteries.
My concern was that a single Odyssey battery would'nt hold up well and I wanted a backup in that case.
I shouldn't have been concerned at all, as one battery works just fine.
Jim
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