Pareesa Afreen 
Oct 26, 2025
Many smartphone users still wonder: does charging your phone overnight damage the battery? The short answer is no, at least not anymore.
The reason behind this is the smarter power management features that protect your phone while you are asleep, which include features like adaptive charging, battery limits and health.
Older lithium-ion batteries would deteriorate more quickly when kept at 100% long term, which is one of the reasons many experts suggest keeping your battery status at a charge of between 20 and 80%.
However, modern Android and iPhone models are equipped with AI-based charging systems that delay charging speed while only hitting 100% right before your alarm is set to go off.
Adaptive charging
Most major brands, including Google, Samsung, and Apple, have adopted optimised charging practices. The device learns your daily habits and then pauses charging around 80% full and finishes charging just before you wake up. The idea here is to reduce strain on the battery and keep it from overheating.
Charging limits
Some phones even allow for a limited charge to be manually set. For example, on Samsung Galaxy phones, you can stop charging at about 80%, while Apple iPhones and Google Pixels do this automatically. The less your battery is charged, the less heat is generated, resulting in less wear and tear over time.
Battery health monitoring
Check to see if you can view your battery health directly in settings. There is a way to monitor your battery health, whether it’s Apple’s percentage readout or Samsung’s cycle countThis will let you see potential signs your battery may be degrading in time to replace it when performance declines.
How to avoid your phone's battery getting damaged?
Don't worry about charging devices overnight. Most phones have their own battery safeguards. You just need to avoid extreme heat, have the software up to date, and let the phones handle their smart charging process.
