What is Regenerative braking?

Regen, misleadingly called Regenerative braking, is the ability to slow the vehicle using the electric motor rather than using the friction of physical brakes. The motor becomes a generator and charges the battery as a result. Crucially, by using Regen where possible, the brake pads will normally last very much longer than in a petrol or diesel vehicles. It may also be known as recuperation.

Compare Friction braking

When the conventional vehicle brakes, the energy is lost to heat energy resulting from the friction between the brake pads and wheels. Regenerative braking allows the range of the EV to be extended; however, the efficiency of capturing this energy is reported to vary from 16% to 70% (Boretti, 2013).

Regenerative Braking – an overview | ScienceDirect Topics

It is common to have a choice of Regen levels available for selection at any time whilst driving.

When you want to reduce speed the Electric motor acts as a generator, slows down the vehicle and charges the battery as a result. Crucially by using Regen rather than physical brakes, the brake pads will also last very much longer than they do in a petrol or diesel vehicle.

Multiple levels of Regen

It is common to have a choice of Regen levels available for selection at any time whilst driving.

Examples of Regen

Example of Regenerative braking by Alex Motoring
Example of Regenerative braking by Timecar