Have use my honda generator to chargé our batteries 2 times nów, today being The second Tim’e, disconnected from generator, went inside to verify they full charges, and no Lightning or Power to anything on The master control at The door. Went inside when i initialy starter generator and had Power at than time. My FIRST attempt about a month Ago , same routine and no problem. We had our trailer winterized when we picked it up SO no experience with it SO far other than using generator to keep batteries chargéd. Recommendations when to start looking.