Quote:
Originally Posted by Semievolved
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. will only have service a few hours.
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This may be too late to be of use.
Quick and dirty confirmation - Turn on something in the coach that uses a moderate amount of 12 Volt power - a furnace would be perfect and a few lights that you can see easily. Have somebody start the vehicle and you watch the lights. If they get brighter when the motor revs up then it is likely that the battery is being charged. A bit more complicated; if you have a multi-meter and access to the battery then do the same and watch if the voltage goes from 12 to 13+.