Battery drain in a few hours - Dometic Rooftop RV Air Conditioner

battery failure or parasite drain https://www.youtube.com/watch?v=KF1gijj03_0

Instrument cluster ,maybe . Watch part 1 an part 2 , silver migration problem ,google that .
Chevrolet Truck Battery Dies Overnight Part

The battery dies after sitting for a few hours ? Parasitic drain on the battery ! With the key off all fuse's shouldn't be hot ! Bad ignition switch . Find a wiring diagram at www.bbbind.com an check power at ignition switch . Look on you tube , a lot of videos on basic electrical trouble shooting .

you have a short somewhere try taking one fuse out at a time until you find the right circuit

how old is the battery it might not be holding charge. feel the battery if it is getting warm to the touch even when not in use

Please check this link for tips if your car battery is draining overnight.
click this link:

http://www.fixya.com/cars/r5824824-draining_car_battery_charge

Most likely you have something draining the battery. Quick way to tell, disconnect the ground (negative) cable to the battery, let it sit for a few hours, then reconnect it and try to start it. If it starts OK, you know the battery is holding a charge, but something is draining it.
To drain it in just a few hours requires a serious draw, like headlights or the cooling fan. It is possible that your cooling fan (behind the radiator) is staying on all the time. Often they are controlled by a thermostat, and will run for a few minutes after you shut off the engine, but it should shut off within about five minutes. If it is still running after ten or more minutes, you have a bad fan thermostat or a bad fan relay. If that is not the problem, you will have to get someone with an ammeter to measure the current draw, and start pulling fuses until you find the culprit.

Have you tried leaving it to charge (with the red light on) for a few hours. The red light usually means a completely drained battery that needs a few minutes/hours to recharge.
Also, try cleaning the battery connectors with a rough toothbrush...

most of the time when your plugged into the pc it will charge see if this is true for your player if so leave it on the the pc for a few hours also drain the battery fully then charge for a few hours

try to replace new rechargeable battery, recharge it in specified of numbers of hours.