10. Rubbee X
Rubbee X makes every bike electric. It has batteries, electronics and a motor that touches the rear tire of the bike. It also has a wireless cadence sensor that tracks Your pedaling pattern and adapts the electric assist automatically. In non-e-bike mode, the Rubbee X sits up above the rear tire, not touching it. When you want an electric boost, though, you flip a lever to lower it down.
The range varies from 16 km (10 miles) with a single battery, up to 48 km (30 miles) with all three. A new regenerative braking feature, which is activated by pedalling backwards half a revolution, helps boost that range. If you’re interested in getting a Rubbee X of your own with a single battery, a pledge of £269 (about US$355) is required.