234 comments on The energy efficiency of cars
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234 comments on The energy efficiency of cars
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Electric battery warmers work down to at least -40, draw about 20 watts, available at Canadian Tire stores
doesn't help much when you're on the road at -35F. duh.
or are you going to run it off the battery itself?
on a Prius there's no problem starting on a cold morning ..... it's just that the hybrid-system-battery is just another chemical reaction and decreases capacity with decreasing temp.
In a HEV like the Prius, the battery pack can be kept inside and warmed up as the vehicle warms up, so any concerns about temperature w/r/t NiMH capacity aren't an issue. In the case of a PHEV or EV, the manufacturer would almost certainly use a Lithium based chemistry since those are the cheapest per kWh stored right now given a PHEV/EV app, and have very good low temperature performance.