Youíre not looking at it too simply at all--itís a good question. We love readers with inquisitive minds, and the answer to your wonderment is basic physics. In regular cars, and even in normal hybrids--to a lesser, but similar, degree--the internal combustion engine drives the alternator/generator to keep the battery charged. This works well for two reasons: the engine is already running to keep the car moving, so itís also available to power the alternator, plus these relatively small starter batteries donít require much power to keep them charged, so the alternator load is light. However, in pure electric cars ...
Want to read the whole deal on what's up with electric cars and recharging? Check out Bill's letter, along with our answer to get the scoop on the recharging issue of plug-in electric cars. --Christine & Scott
photo © General Motors - Chevy Volt electric car