Jagtech wrote:
Still sounds like a flakey battery connection. Have you checked the ground cable at the frame connection? Also, a bad engine battery can act like that if it has a bad connection between cells (internal fault). It will still charge and check as good.
My original coach battery made it about 9 years before I had to replace.
During that time the O/P's description happened 4 times
And every time the quoted text described the problem.
The first 3 I crawled under with load tester Disconnected a lead Hooked up the tester and confirmed GOOD BATTERY cleaned connections and re-attached and fired that sucker up like new
The forth time the load tester confirmed BAD BATTERY and a brand new DEKA appeared in the battery tray. (And fired that sucker right up).