I wanted to clean the battery terminals on the 6 volt golf cart batteries so I shut off the auxiliary and main breakers above the door and the switch above the propane tank. Then I pulled out the batteries and cleaned all the terminals and checked the water level and installed all the batteries. Once the breakers were turned on I knew something was wrong. I can usually open the fridge and see if the light comes on. Also the TV light will come on showing there's power there. No lights. Where are the breakers that I need to check? It looked like the inverter was working; the fan was on. There's 2 breakers on the inverter marked AC in and AC out. I'm not sure, but I think they were closed breakers. There was a fuse box next to the inverter box, but there was a warning to disconnect the batteries before going into the box. Maybe later I'll check those out. The batteries and inverter should produce AC power after the RV is removed from shore power. It's not doing that anymore. Any help would be appreciated.