Ascher

Ascher make inexpensive bicycle lighting sold in sets, and the USB rechargeable front and rear light set is what Electric Bike Insight lists. It covers the legal minimum for riding after dark in the UK, a white light to the front and a red one to the rear, and charges over USB rather than running through disposable batteries. Lights of this type are designed to make you seen rather than to light an unlit lane, so anyone covering dark rural roads on an e-bike will usually want a brighter front unit alongside them.