The US military tested the one-hour pants to charge 4 smartphones

Ultra-light-fitting pants help capture energy from moving your feet and generate enough electricity to charge four smartphones after an hour of walking.

According to Gizmag, PowerWalk is a product of Canadian-based Bionic Power, which specializes in developing armor to help soldiers reduce the amount of batteries needed to carry out tasks, making room for necessary equipment. on the battlefield."A soldier usually has to carry a battery of 7.3 - 9.1 kg in a 3-day mission," said Noel Soto, a system engineer working at Natick's Engineering, Research and Development Center. US team said.

"If a soldier can generate electricity with a power receiver, it means we not only reduce the weight of the operation but also reduce the dependence of the unit on the supplies. Battlefield, helps increase the time and efficiency of the mission, "Soto said.

The Bionic Power-designed pants include a gearbox that converts the rotation speed of the knee to higher speeds for efficient power generation and a generator that turns the energy into electrical energy.

The circuit in the device allows electricity to charge Li-ion or NiMh batteries.Compared to traditional batteries, PowerWalk is extremely compact, reducing military weight, reducing the difficulty associated with supplying and replacing battery packs on the battlefield.

Not only power generation while operating, PowerWalk also helps soldiers to relieve muscle fatigue when downhill, reducing the risk of knee injury.

"Military units around the world are trying to reduce the weight of soldiers' luggage. The use of PowerWalk energy receiver allows to reduce the battery weight, while providing the necessary electrical energy for communication, positioning and observation, "said Yad Garcha, Bionic Power executive chairman.

Bionic Power signed a $ 1.25 million contract from the US Department of Defense to produce a small amount of PowerWalk pants for a pilot program in the first half of 2017.