Not as serious! Truck and camper have been bundled up for a couple months. Solar panels covered. Older house batteries went way down. I put it up and plugged the shore power on. Fridge working. Fans working. No water pump. Dark happened and the fans stopped and none of the DC worked. Up this morning and switched the charger from low to high and I had DC again...for 5 minutes the the charger shut off. There is a toggle switch next to the high/low charger. I think it controls whether the alternator will try to charge the batteries? Anyway the toggle just flops and doesn't do anything anymore. That's the only thing that seems different. Waiting for enough sun to check more. Any ideas? I think I posted a pic of the toggle switch. This is a 2002 Alaskan