Electric Cars Are Ever So Slightly Lighter With Dead Batteries

Drive your railway car until the tank ’s empty , and it will in all likelihood be 100 Egyptian pound lighter ( minus the 6 supernumerary Red Bulls consumed ) . But drive an electric railcar until it ’s out of succus , and on a much small scale , it will also have shed weight .

Whether or not batteries get lighter as they lose vigor is a motion that has vexedYahoo Answerssince amateur physicists first get hold the net . So to settle the interrogative sentence , YouTuber Tom Scott tracked down half a dozen famous professor ( and a Tesla Model S ) . Their answer ? A numb battery is light than a charge one , but on a microscopical weighing machine .

As Scott excuse , the mass lost is equivalent to the battery ’s get-up-and-go , divided by the speed of brightness squared ( we know this thanks to e = mc^2 ) . Anything divide by the stop number of light square is going to be an unfathomably tiny act — in this suit , less than the weighting of the rubber burn off the tires .