I have a 2005 Rincon. I went to start it today and it was dead. I have had it plugged in to a battery tender always. The battery in it is about 6 years old. I hooked it up to a larger charger and after a few hours it said it was charged. Went to start it and it is still dead. I then jumped it to a automotive battery and it fired right up. I let it warm up and when I disconnected the jump battery it died again. I needed to move it and I found if I kept the rpm's up it would run but as soon as it went to an idle it died again. The point is, the rincon alternator will supply enough amps to run at an idle but will run if you keep the rpm's up. I ordered a new battery.