Testing the batteries with a volt meter will not tell you anything. You need to load test them I would be willing to bet you have one or both of your batteries going bad. The charge you read right after running it is a surface charge. These rigs are current pigs it takes alot to turn them over. A good fully charged battery should be 12.65 ish.
12.65V 100% 12.45V 75% 12.24V 50% 12.06V 25% 11.89V discharged
Last edited by The_rook : 10-13-2008 at 10:29 PM.