Regenerative braking

When you brake on an EUC, the motor acts as a generator. Some kinetic energy comes back as electrical energy, which the controller tries to send to the battery. You slow down. The battery charges. Efficiency improves.

The catch

Regen only works when the battery can accept charge. At full battery, regenerative braking can cause overvoltage - the battery refuses the energy and the wheel may behave unpredictably. This is why starting a ride at 100% on a downhill is dangerous.

How much range does it add?

Depends on terrain. Flat city riding: minimal regen. Hilly terrain with lots of braking: noticeable. Don’t expect regen to double your range - the energy recovered from braking is a fraction of what you spent accelerating.

555 take

Regen is a feature, not a strategy. Appreciate the free energy on descents, but never count on it for range planning. And never start a downhill on full battery. The regenerative braking deep dive covers overvoltage, braking feel, and the limits of recovery.