It had an electrical short that was draining the battery and I never chased it down and fixed it. It ended up shorting out one day while I was using it and heated up the battery cables. I smelled it burning and disconnected the battery and turned off the key but the engine did not shut off. I parked the excavator and shut off the fuel valve to kill the engine. The next day I charge the battery and tried to start it but got no power to the controls. I have not tried to run power directly to the electronics so I do not know if they are good or not. It may simply be bad cables or fuses but I would expect bad electronics because of a direct short but would not know for sure with out checking them. I don’t know how robust the electronic on these machines are but they may be good. All other parts are operational and were in working order when parked. The item “Mitsubishi MM55SR Excavator Backhoe Same as Cat 304.5″ is in sale since Tuesday, August 16, 2016. This item is in the category “Business & Industrial\Heavy Equipment\Excavators”. The seller is “808kak” and is located in Oklahoma City, Oklahoma. This item can’t be shipped, the buyer must pick up the item.