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Originally Posted by ken1784
You just don't know the W/kg battery power specification.
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I've seen that at the everspring site - chinese bad translation - it should be W-HR/KG.
A flashlight battery can supply a 100 kw - just run it through a DC-DC convertor to a High Voltage Capacitor - and rapidly discharge the capacitor into a load - a 7.5 W-HR flashlight battery would supply 100 kw for 7.5 X 3600 / 100,000 = .27 secs assuming 100% conversion & discharge efficiency. With 16 flashlight batteries you could power the Tesla from 0-60 in 3.6 sec!
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Originally Posted by ken1784
Again, the utility space shoud be compared.
Prius is 5 passengers plus 16 ft3 luggage volume and Tesla is 2 passengers with almost no luggage space. It's apple to cherry.
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Luggage space, volume, passengers are irrelevant to the calculation, it is strictly a matter of rolling / air resistance ( not very significant as they are both aerodynamic small cars - a few percent difference at most ). Main difference is weight - weight means that more energy is needed to accelerate the vehicle and I believe the Tesla returns about 75% of that energy to the battery on deceleration. A significant factor for the 600 lbs weight difference, but not enough to reduce the Tesla series hybrid mileage to that of the Prius's.