41.   Patients wear wireless battery packs on their waist.

42.   That is because hybrids and battery packs will become far more common over the next few years.

43.   The battery will be recharged continuously by radio waves from a larger, rechargeable battery pack patients will wear in a harness.

44.   The battery pack was affixed to the inside back of the helmet.

45.   The battery packs are situated under the floor so that good stability and a roomy passenger cabin are maintained.

46.   The American military is evaluating hand-cranked satellite-navigation devices and landmine detectors that would save soldiers from having to lug bulky battery packs around.

47.   The battery pack is recharged by the onboard gasoline engine that runs both the drive wheels and a built-in generator.

48.   The device, which is wired to a battery pack, is strapped on with a suede band that looks like a belt.

49.   The external battery pack that powers the AbioCor can be worn as an adjustable belt around the waist or held up by suspenders.

50.   The devices rely on wires that puncture the skin to connect them to battery packs worn on a shoulder strap.