Recharge Coach Batteries???

Sounds as if your house batteries are nearly dead.The short drive revived them a little. Battery level indicators are not accurate.Open up the house battery compartment and check level of electrolyte in each cell. If you can see battery plates, you need to add distilled water to cover the plates. If you have a 12 volt car battery charger of at least 4 amp capacity, hook it up to house battery and let it charge for 24 hours. Check battery voltage after charging, with digital volt meter, it should read around 13.3 volts. If battery recharges properly, it may start the generator.If battery(s) are damaged from being left in a discharged state, or lack of maintenance, they may need replacement. When connected to shore power, your converter should charge the house battery(s) but many of older stock converters can overcharge the battery and boil out the electrolyte. You must keep track of electrolyte levels and add distilled water as needed.