The everyday language around batteries has settled into something convenient: we “charge” them, they “run out,” we “top them up” when we can. The underlying image is a tank, or perhaps a reservoir: electricity poured in through the top, drawn out through the bottom, the quantity diminishing until it reaches empty. It is a useful [...] The post A battery does not store electricity in the way most people imagine — it stores chemical energy, and every time your phone turns on, it is harvesting a co