According to Battery University, leaving your phone plugged in when it’s fully charged, like you might overnight, is bad for the battery in the long run.
It keeps the battery in a high-stress, high-tension state, which wears down the chemistry within.
Is it bad to charge your phone overnight?
Make sure you unplug it from the charger after it reaches 100%. Don’t leave it charging overnight. That’s why you can plug your iPhone or Android phone into a charger, and revving it up to at least an 80% charge happens fairly quickly. But as we all know, our smartphone battery charges don’t last long.
Does overcharging a phone battery damage it?
It’s complicated, as leaving your battery plugged in all night certainly isn’t dangerous but it might make your battery age slightly faster. “Overcharging” is the term that gets thrown around a lot with this one. This did, in fact, cause damage to the battery and reduce performance. Hell, it even led some to explode.
Is it okay to charge iPhone overnight?
You may have heard that charging your iPhone overnight is bad for the battery. According to Battery University, a website run by the company Cadex, charging your phone when its already fully charged keeps it in a high-stress, high-tension state, which wears down the chemistry within and does lasting damage.
Should you charge your phone to 100?
For years, it’s been said that letting your phone charge all the way to 100% will result in the battery degrading faster compared to unplugging once it reaches 80% or so. According to Cadex (the world’s largest manufacturer of battery testing equipment), who should know, 50% to 80% is ideal for lithium batteries.