I understood you can could charge an ATV whilst still connected. My battery was not dead but I had not used it for a while - it was still able to start motor before attempting to charge it. I charged the battery and it will no longer start. The lights still work so am guessing I have burnt out a...

'02 400EX - I was having trouble with what I thought was just a bad battery that wasn't holding a charge anymore. I put a new battery on and started it up. After I shut it down then tried to start it again right away, the new bat was drained too. I jumped it with the tractor and put a...