The Truth About Overnight Phone Charging (and Why It's Wrecking Your Battery)

Overnight phone charging is generally safe because modern phones stop overcharging with built-in charge limits.

The bigger battery-health risk is long periods at 100% charge and exposure to heat, which can speed up lithium-ion aging.

Apple, Samsung, and other Android phones include protection features like Optimized Battery Charging and Battery Protect to reduce wear.

To help batteries last longer, use these optimization settings and avoid charging your phone in hot conditions.