New Speed Scooter 48 Volt 480 Watt. The scooter has two problems. The dynamo stopped working, and I took it to a scooter technician who said the dynamo's magnet is the issue. I contacted another scooter technician who said it's either the dynamo's magnet or a damaged dynamo, God knows. The second problem is that the charge doesn't decrease on the screen. When you ride, the battery charge decreases, but the screen shows it as full.