Russian Scientists Create World’s First Wirelessly Charged AA Battery
Russian scientists from ITMO University roll out ‘revolutionary’ wireless charger. 
The device, designed by Russia’s Information Technologies, Mechanics and Optics University specialists, can charge via a standard Qi charging pad – just like your smartphone.The battery looks like a standard AA, maintains 1.5V, and fits existing devices – no special hardware neededEngineers curved the charging coil along the battery’s wall instead of using a flat one, solving the space problem inside the cylindrical casingA smart voltage converter gradually drops output as the charge depletes, giving devices a warning (flashing light) instead of a sudden shutdownWireless charging is a game-changer in Arctic conditions, where swapping batteries in extreme cold is almost impossible, so the project is state-funded.
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