Smartphones are now equipped with increasingly high-resolution screens and powerful CPUs, but battery life has remained relatively stagnant for years. It's impressive when a phone can last an entire day even with heavy usage, but the reality is that many users still rely on overnight charging to start their day with a full battery.
It’s common for people to plug in their phones at night and leave them charging until morning, waking up to a 100% charge. While this might seem convenient, it could be harmful to your phone’s battery over time.
Although modern smartphones have built-in overcharge protection to prevent damage, they don’t always manage heat effectively. Charging your phone under your pillow or on your bed overnight can cause it to overheat, which is especially bad for the battery’s long-term health.
Phonearena recently shared an insightful article discussing how temperature and charge level affect battery degradation. According to research from BatteryUniversity, keeping your phone at 40% charge at 40°C can help it retain around 85% of its capacity after one year. However, if you frequently charge it to 100%, the battery may only retain about 65% of its original capacity after the same period.
In short, the higher the temperature and the more you charge to 100%, the faster your battery will degrade. This means that while it’s tempting to keep your phone fully charged, it’s actually better to avoid keeping it at 100% for extended periods, especially when it’s hot.
Here’s a detailed breakdown of the findings:
So, next time you plug in your phone, consider charging it to around 80% instead of 100%, and try to keep it in a cool place. These small changes can significantly extend your battery’s lifespan and save you from frequent replacements.
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