- Apple says if you want to preserve your iPhone's battery, don't charge it up too much.
- The company says charging your iPhone overnight or for long periods of time can actually be bad for it, thanks to its lithium-ion battery. Leaving your phone on the charger forever erodes its power supply faster.
- Best Lifeexplained that "your phone's battery can expect to have a shorter lifespan the more time it spends close to 100 percent." Yeah, I'm confused, too.
- Android users, you're not out of the woods, either. A cellphone expert toldUSA Today to "not leave your phone connected to the charger for long periods of time or overnight. Keeping your battery level as close to the middle (30% to 70%) as possible can effectively prolong the battery life."
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