He’s also put together a custom 1,500 watt-hour battery pack that lives in a MDF box mounted under the seat. To test out his handiwork, [DIY King ... supercapacitor e-bike is certainly worth ...

When he hooked the motor up to a conventional battery ... for the DIY motor was not capable of doing regenerative braking, so he fitted the capacitors to another e-bike that does have regenerative ...