How long to charge an electric car, and what mileage?
I drive one of those things and your two questions, in reverse order, are always the first that people ask.
I tell 'em the range is 321 miles and that you can charge 175 miles worth in 25 minutes.
Heavy armour seldom makes as much as 200 miles of advance without having to wait for the supply tail to form up and start hauling pork, beans and motion lotion, so the range limitation isn't going to be strategically important in a real-world invasion of some sad-sack Muslim country like Iraq or Afghanistan (or Syria?). If we're ever silly enough to invade the Russian motherland we'll run into the perennial problems of winter where the difference between diesel and electric is irrelevant.