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Old 05-01-2014, 08:50 PM   #1
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Generator

Can u overcharge batteries by running generator too long
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Old 05-01-2014, 10:53 PM   #2
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That depends on what you're using to charge the batteries. The generator 12 charging circuit, or is your converter plugged in to the generator?
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Old 05-02-2014, 07:36 PM   #3
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Generator charing 12 v batteries 2 of them
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Old 05-02-2014, 09:43 PM   #4
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Dave it will help us help you if we know what type of rig you have. Is it a MH, 5er, TT. Most of us put that info down at the bottom of our signature line. You will probably get more responses that way. Best of luck.
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Old 05-02-2014, 09:53 PM   #5
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The 12v output on inverter generators is designed to boost a weak battery in an emergency, but it's not a battery charger. It will overcharge and damage the battery if left connected too long because it's not a regulated output.
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Old 05-02-2014, 10:03 PM   #6
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If you have a converter/inverter with charging, it will charge the battery on power pedestal or genset. A good converter will have a multi stage charger so overcharging is not as much of a worry.
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Old 05-04-2014, 12:08 AM   #7
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Op, how is the generator connected to the batteries?
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Old 06-23-2014, 12:42 PM   #8
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Small generators usually only charge up to 10amps max. That's with a fairly dead battery, but as voltage of the battery climbs, the amperage decreases due to less difference in voltage.

The only way to know for sure that amperage it's at when charging is to measure with a multimeter. If you are around 2 amps, it shouldn't hurt the battery at all unless you have it on there for weeks on end.
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Old 06-30-2014, 03:57 PM   #9
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You can charge your rig with the onboard charger by plugging it in. make sure nothing else is on.
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Old 07-07-2014, 04:07 PM   #10
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I really doubt you have enough fuel in your generator to overcharge a 12v lead acid battery.

It also depends on what voltage your generator is holding the batteries at?? Most cars are at 13.8-14v and you drive them like that for hours, so if you generator is holding the same voltage, it's no different than your batteries in your car.

You'd have to hold the batteries at 15+ volts for a while to get them to overcharge, longer than you'll run your generator.
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