DaveinOlyWA wrote:30-40% maybe? either way, i think that is still pretty good although i doubt its that high.
Yes, rolling resistance and drag and drive train losses (don't forget them, the Leaf's motor isn't very efficient at higher speeds) are dead weight losses. No way to recover those. The energy you can recover through regen is deceleration, either from slowing down or from coming down hills. As an overall number I'd think 30% would be on the high side but attainable.
Regen itself though might be 70% efficient in the best case (one way return, 55% round trip).
This is what I meant by saying that people use different numbers for regen efficiency so you have to understand what number they're talking about.