Many Android users still believe that charging their phones to 100% is the best way to keep their battery healthy.
But experts say that this habit could actually shorten your phone’s lifespan. Here’s why.
The Truth About Lithium-ion Batteries
Modern smartphones use lithium-ion batteries, which perform best when their charge level stays between 20% and 80%.
Constantly charging to 100% or letting the phone drain to 0% puts extra stress on the battery cells, causing them to degrade faster.
Why Full Charges Can Be Harmful
When your phone reaches 100%, it stays in a “trickle charge” mode if left plugged in, which generates heat.
Heat is one of the biggest enemies of battery health. Over time, this heat exposure can cause your battery to lose capacity, making it last less between charges.
What Manufacturers Recommend
Brands like Samsung and Google now include battery protection features that stop charging at 85% or 90% to extend battery life.
Apple has a similar feature called “Optimized Battery Charging” on iPhones.
Using these settings helps keep your battery in a healthier range.
What’s the Best Charging Practice?
Experts suggest keeping your phone between 20% and 80% most of the time.
Occasional full charges won’t harm your device, but making it a daily habit can shorten the overall battery lifespan.
If you need the extra juice for a trip, go ahead and charge to 100% — just don’t do it every day.
The Bottom Line is
Charging your Android phone to 100% isn’t always necessary and can harm your battery over time.
If you want your device to last longer, stick to moderate charging and take advantage of built-in battery health features.
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