The hidden 20Wh rule behind smartphone batteries: why iPhone and Galaxy still play it safe as China goes bigger
Chinese smartphone makers are now exceeding the traditional 5,000 milliamp-hour battery capacity, a limit Apple and Samsung still stick to. One factor: new lithium battery transport regulations, recent reports suggest. Battery life is back in the spotlight, even as brighter displays, 5G connections, and more demanding software push power use higher. An industry report recently pointed out that raw mAh numbers—the simple measure of battery capacity—are becoming less reliable for predicting how long a phone will actually last on a charge.