We've discussed regenerative braking quite a bit here on AutoblogGreen – the process of capturing energy during deceleration and storing it for future use – and pretty much every electric vehicle with an AC motor utilizes it. And why not? On paper, putting energy back into your batteries should extend your driving range. But what if it didn't? Would it be worth the expense or hassle?
A vehicle in motion has a lot of energy passing through it various ways. The limited capacity of electro-chemical batteries means engineers have to find any way they can to reduce wasted energy and recapture as much as possible. The primary means of recapturing energy up until now has been regenerative braking, where the wheels turn the motor during deceleration causing it to charge the battery.