4 ms·
Electric cars are about 3 times as energy-efficient as ICE cars. So it's not 1% to 2% but 3% to 6%. And with other savings (much lighter engine, no need for tra
by ajuc 7y ago
Electric cars are about 3 times as energy-efficient as ICE cars. So it's not 1% to 2% but 3% to 6%. And with other savings (much lighter engine, no need for transmission) it's even better.
The problem is with degradation - it seems the new batteries only last 200 cycles.
- JoeAltmaier 7y agoIts all problems, so far. Weight, heat, size, charge cycles, range. Its only recently that its been even possible to make a practical electric car. Don't fool yourself - there's a transmission element in an electric car too. The power has to get to the wheels, regardless of the power plant.
- elil17 7y agoAn electric car transmission is a usually a simple reduction (two gears). An ICE transmission is usually a six speed shifter, often with hydraulic controls. A world of difference in terms of weight and maintainability.
- JoeAltmaier 7y agoThat's just talking gearbox. Then there's casing, shafts, mounts, cooling. The difference in number of gears is the smaller part.
- ajuc 7y agoThis is Tesla mechanically: https://qph.fs.quoracdn.net/main-qimg-fa63245953aaf5f393e851daca58eac6 https://qph.fs.quoracdn.net/main-qimg-fa63245953aaf5f393e851... Please don't pretend it's anywhere close in complexity and weight to the ICE. Of course if you include batteries then it's heavier. But that's why people are excited for any small change in battery energy density.
- elil17 7y agoThat’s really not that much worse than a lithium ion battery (300-500 charge cycles). Also, higher capacity means less frequent charging.