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SJ-Chris's avatar
SJ-Chris
Explorer II
May 01, 2018

Batteries drained because lights left on...how bad is it?

I retrieved my RV from storage today where it had been for 14 days. When I entered the RV I immediately saw that the interior lights (LEDS) were on. Yikes! They were on for 14 days straight. I do ...
Harvey51's avatar
Harvey51
Explorer
May 06, 2018
When a battery is charging it’s voltage is the voltage of the charger. Disconnect the charger for at least a couple of hours to get an indication of state of charge from a voltage reading.

I have a smart charger with equalize mode but in this case I would use my little bench variable power supply because I can set it at 14.8 volts for a few hours. Dumb can be better than smart because the charger doesn’t know what happened to the battery.

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