Jumped into my 2001 Jeep to run to the bank it didn't crank over but my gauges just started bouncing all over the place. I turned the key off and jumped out of the jeep to pop the hood I could hear everything stop as I opened the hood. I checked the batter connection and everything looked good, I closed the hood and got back into try it again. Soon as I turned the key on everything just started bouncing again. This time a buddy was standing there and as I opened the hood he saw everything had stopped bouncing around. So I lowered the hood and again the gauges started bouncing. I disconnected the battery someone told me to have it checked. The garage said it was low, so I left it there to charge over night. Does this sound like it could be a low or bad battery issue.