Their experiment was massive. They tested iPhones and Androids over 500 full charge cycles - that’s roughly a year and a half of everyday use - comparing fast and slow charging, plus that “keep it between 30 and 80%” method we’ve all heard about. The result? Practically no difference. iPhones that charged slowly lost 11.8% battery capacity. The fast-charged ones lost 12.3%. That’s a microscopic 0.5% gap. On Android, the difference actually leaned the other way - fast charging did slightly better. but just slightly.
They even tested the myth about leaving your phone plugged in overnight. Turns out, it doesn’t matter. Zero measurable harm. The whole “slow and careful” battery routine? Mostly just stress management.
HTX’s final verdict was refreshingly simple: just charge your phone however it makes sense for your life. Fast charging, overnight charging, whatever. Your phone’s built-in systems are already doing the hard work of protecting it.
And honestly, it’s kind of freeing. After years of tiptoeing around my battery like it’s a fragile pet, I can finally plug it in without guilt. Fast charging won’t kill your battery - but obsessing over it just might kill your joy.
