yes check to make shure the cables are tight. then give the battery a charge. the take a small amount of trnsmision fluid on a paint brush or q-tip and put it on the battery terminals this prevents oxidation wich will cause lose of connection. if it happens again then you got a charging problem. batteries do go bad to so you could have a bad battery

I have no faith in human perfectability. I think that human exertion will have no appreciable effect upon humanity. Man is now only more active - not more happy - nor more wise, than he was 6000 years ago. Edgar Allan Poe