jumpstart

Hello, I have a NCM Prague with about 400km on it. When the bike has not been used for a period of time the control panel on the bike will not turn on the battery/bike. The battery capacity button also doesn't turn on the battery/bike or show the battery capacity. I've never timed...

Has anyone else seen issues like this where you ride it, park it for a few hours, then come back to find what should be a 50%-75% battery to be totally dead where it displays "no battery" on the control screen? Some details around what I've tried: 1. A brief "jumpstart" using the charger brings...