Efficiency of Regenerative braking

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Nu2ecar

Member
Joined
Jan 17, 2014
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13
Does anyone know this? How much of the kinetic energy in a moving car gets converted into energy stored in the battery? Is this maximized at maximum regeneration - slowing the car as quickly as possible without using conventional brakes.

Similarly how efficient is the power-train? How much of the battery's energy gets to drive the wheels?

If the car accelerates maximally to 60 mph (100 kmph) and then slows with maximum regenerative braking, what percentage of the energy used is returned to the battery? Perhaps BMW doesn't release this, but it would be a useful measure for comparison acroos EVs.

Nu2Ecar
 
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