After an off-grid homeowner ran a propane generator for about 30 minutes in cloudy weather, the battery’s state of charge fell by 1 percentage point from 38% instead of rising. Reddit commenters said charging depends on the system setup and may require an inverter setting.
Commenters said some inverters do not handle battery charging, while other setups may require a manual AC-input or bulk-charge setting. One noted the battery can keep draining if the generator supplies less power than the home is using; another said a correctly configured system should show an almost immediate increase in battery voltage.
