Is It Bad to Charge Your Phone Overnight?
Overnight Charging Is Not the Villain Leave it plugged in. For most people the overnight charge is harmless, and the setting that matters more is the charge limit. Apple designs iPhone 15 and later batteries to retain 80 percent of original capacity after 1,000 complete charge cycles, and iPhone 14 and earlier after 500 cycles. What actually shortens that life is heat plus long stretches parked at a full 100 percent. Both take about a minute to fix in Settings. The advice to unplug before bed comes from a real problem that phones solved years ago. Early lithium-ion packs kept sipping current after they filled, which cooked them slowly. Charging circuits now cut off and let the battery drift down before topping it up again. The phone on your nightstand is not fighting the charger all night. That leaves two levers worth understanding. One is how long the cell sits near full, and the other is how warm it gets while it does. What a Charge Cycle Actually Counts A charge cycle mean...