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Hybrid cars, braking engergy used to charge battery how?

Can somebody explain how the braking energy in hybrid cars is used to recharge the battery or whatever?

Public Comments

1. Friction and heat when brake pads applied.
2. Some hub motors will function either as motors or generators. To brake, use the hub motor as a generator, and use the current to charge the battery. It is all done electronically, with a fairly clever battery controller.