3rd Gen Engine and Drivetrain -> 2003-2007 5.9 liter Engine and drivetrain discussion only. PLEASE, NO HIGH PERFORMANCE DISCUSSION!

will a cigarette lighter battery tender charge both batteries?

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Old 05-06-2011 | 04:30 PM
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04ctd's Avatar
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From: Charleston SC
will a cigarette lighter battery tender charge both batteries?

got the old girl in long term layup.

changed tranny fluid, rearend fluid, oil.
new tires, new balljoints.

and diesel went back up

i pull it out once a week or two to cut back yard, (have teenage boys from church cut grass to teach them some work ethic) and that is worse, since it don't run long enough to replace the energy it took to crank it.

don't want to run two battery tenders under the hood, taht would be annoying to disconnect.

got two old optima red tops in it
Old 05-06-2011 | 05:24 PM
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sdaly's Avatar
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Originally Posted by 04ctd
will a cigarette lighter battery tender charge both batteries?
Do you mean the cigarette lighter in the dash or the center console? Because the one in the dash will only charge the left battery, and it won't work with optima batteries.

just kidding. yes, it will charge both batteries just fine.
Old 05-06-2011 | 09:12 PM
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Jeff in TD's Avatar
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Yeah, the batteries are connected in parallel by cables. As long as you are using a socket that is hot with key off, it should be fine.
Old 05-07-2011 | 02:08 PM
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thanks was not sure how the battery isolator circuitry was set up in there.

gonna start driving to take my Yard Help home, at least get it up to temp, but that's always in dark, so still no real charge for batt;s


thanks guys.
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