ëì äçéãåùéí
èåùéáä îåöéàä á 2019 áèøéåú òí ÷éáåìú ôé 3 åèòéðä á 6 ã÷åú
åäîç÷ø áâøôï äîééöø áòöîå çùîì îúðåãåú òöîéåú
https://newatlas.com/battery-breakthroughs-2017/52559/