I’m afraid David may be right, especially if you didn’t leave it plugged in all winter and it wasn’t where sunlight could get to its solar panel. You don’t explain whether “no power to anything” means 120 volt also. Even with battery mains off, an entire winter of parasite drainage and not even solar input can take 12v systems down. Even deep cycle house batteries can be damaged if drained entirely and left that way. Are you sure you have AC where you plug into the outlet? Is the outlet 50 amp, 30 amp, or 15/20 amp?
First, if they are 6 volt batteries, use a voltmeter with the black lead on one house battery in the back of the tray’s negative post and the red lead on the positive post of a front battery. Ideally they should read around 12.8 volts with the coach not plugged in to a 120v outlet. At 12 volts they are half discharged and that’s not good. Anything lower than that… well, let us know. It would be nice to know how old the house set are as well as the two chassis ones. Your two chassis batteries should be 12v each, not 6v each like the four house ones; so they aren’t connected in series and can be measured individually, not as in two’s like the house ones - we hope to see 12.5 to 12.8v on each of the chassis batteries.
Even if the chassis batteries are up, you need to get the house set charged up before starting the engine, because it’s a typical mistake many make when “dry camping” where the poor engine alternator is overworked trying to recharge deeply depleted house batteries. An overheated 160 amp alternator is subject to failure and expensive to replace. So make sure you charge the house set first using the generator or a portable charger before starting the engine.
Please advise us as to which power is not working, 12v or 120v, or both. Voltage at batteries? At the AC outlet? We really need more info to help.
Joel
