Originally Posted by kinma13
I'm plugged in but only a trickle charger. No the pup power supply and I did have the vent fan on so a low battery does sound right. Forgot the trickle charger only charges at 1.5amp. Shut fridge off and all power is off at shut off switch so now it should charge the battery overnight. Thank you for reminding me about the power.
1.5A charger is not going to recharge your battery overnight, even with all loads disconnected. 1.5A times 10 hours is 15AH. Your battery is probably 80AH, and at least 50% discharged for the low voltage alarm on the propane/CO detector to go off. Will you get the battery charge above the threshold for the low voltage alarm? Possibly. Best bet is to hook up to a real charger using power in the bathroom. Another good bet would be to borrow a generator. 2nd best would be jumper cables from your tow vehicle battery for an hour or two (taking the motor above idle to about 1200RPM will increase the charge rate of the alternator).
I've been there, done that, and have the T-shirt for running my battery down to nothing while camping in a pop-up. I have used all the above except the trickle charger to get enough charge to finish the camping trip.
Although slow to learn, I remembered to install 2 batteries when we bought our A-frame. The 2 batteries carry us for 4 nights with the heater running up to 5 hrs/night. Interior lights are LED, and the fridge does not have a control board.
Being a High Wall, your fridge may or may not have a 12V control board. If the fridge controls are inside the camper, or you have a freezer section, you definitely have a 12V control board. If the controls are on the outside inside the fridge vents, and there is no freezer, you may have a continuous run fridge. The standard height PUPs and A-frames have smaller fridges that are continuous run and do not have/need a DC control board.
2014 Rockwood A122 A-frame
2008 Hyundai Entourage minivan
camping Colorado and adjacent states one weekend at a time
next trips: Rocky Mtn National Park, Mt Rushmore, Utah 5