Thank you for the replies. The batteries are only 6 months old, cells are full and had not been dry. I had a load test done and it showed to hold the load. terminals are clean and were tight. Not sure about the circuit breaker for the batteries. I tried again and plugged into shore power. Took of shore power and turned house lights on --- once again, they stayed lit for about 3 minutes and went off again. If it was a circuit breaker, wouldn't it have stayed off from the prior time I did the same thing yesterday? Thanks again for all the suggestions.. I am stumped
