tech writer Jesse Hollington

Overnight phone charging does not destroy the battery

Answering a question on Quora, tech writer Jesse Hollington refuted recent reports that overnight charging does lasting damage.

"You simply can't overcharge an iPhone, or any other modern electronic device, for that matter," wrote Hollington. "When your iPhone is plugged in and reaches 100%, it switches to external power and simply runs from that."

The explanation is that any device that uses a Lithium Ion or Lithium Polymer battery must incorporate a charging circuit that cuts off charging power when it hits 100%.