We were newbies to boondocking and I had a large double slide truck camper with two 12v batteries. We were constantly worried about not having enough power when out and about for any length of time. We always would immediately turn off all lights, pumps, tv, etc.
It came time to replace the batteries. We were told to cycle the batteries down to nothing and then fully recharge. We turned on EVERYTHING that had any current going to it (lights,frig,inverter,two fans,tv,stereo) you name it.
SEVEN DAYS LATER... everything was still running!! Never worried about power again!!
Keep the genny, just in case!
Good luck. Worry less-enjoy more!!!!