But the cars, when converted, run quite well for 60 or 70 miles between charges.

The new model looks just like its predecessor, whose range turned out to be generally less than the predicted 90 miles between charges.

The result is devices that can operate for little more than four to six hours between charges.

The hand is battery-powered and can be used for up to 20 hours between charges.

The first question most people ask - how far the car will go between charges - becomes less important after a few days.

The buses can travel more than 100 miles between charges.

Between local and federal charges, covering two decades, he'll never see the light of day again.

The distance between positive charges is more difficult to calculate.

The headphones themselves probably see three or four days between charges.

The life span of my bicycle light between charges is about three and a half hours.