This hybrid power supply will power a range of devices for soldiers in the field.

July 5, 2007 Infantry soldiers have a tough lot in life. Apart from being constantly shot at and placed in risk of bodily harm, they're frequently forced to carry around large amounts of heavy equipment, sometimes weighing over a third of their bodyweight. On a typical 5-day-operation, disposable and rechargeable batteries alone account for about ten kilograms of backpack weight, not to mention the various charging devices for cell phones, PDAs and visual systems. There's good news though - German researchers have developed a lightweight hybrid power supply that will soon be able to ease the load.