I have the Earthwise Cordless 24v 20 amp hour lawn mower and it won't do anything. My stepson was mowing the lawn yesterday and it quit on him. He thought the battery was dead and plugged it in. The problem is none of the LED charger indicator lights are functioning, and I have absolutely no response from the mower at all. The Battery is putting out almost 26 volts, and the switch tests fine. Any ideas? Thanks in advance.