Eco Trees

Roll Charger is a kinetic charger created by Shanghai designer Jiang Qian. He was inspired by Chinese baoding balls. This device could recharge your batteries by harnessing energy from the ball’s motion. Roll Charger converts that kinetic energy into electricity which is then used to charge a single battery within the ball.

Hitachi has made an important step in the development of “green” cars. The company claims it has developed a new lithium-ion battery for hybrid and electric cars that tops its previous versions by 70% in output density.

A new discovery shows that the batteries can be charged very easily by their exposure to sunlight. The inventor Knut Karlsen recently developed the SunCat batteries that are wrapped in flexible photovoltaic panels and will slowly recharge when left to bask in the sun.

This discovery was made by a group of researchers at Rice University which have founded a new way to improve the efficiency of lithium-ion batteries: use carbon-nanotube/metal-oxide arrays as electrode material.

The Aqua Power company presented its new aqua-powered batteries. The batteries could be powered by anything water-based including jucie, pee or coffee. Low-wattage devices such as a clock or small light could be powered by the liquide which generates a reaction between aluminum and magnesium generating up to 500 milliamp-hours (mAh) of life.

Imara Corporation is a manufacturing, design and research company that has announced a next generation of advanced lithium-ion batteries. These could be used  for high power devices such as outdoor power equipment, hybrid vehicles, power tools, grid storage, lawnmowers and speciality applications.