iPhone Battery Replacement
Quick answerIf your iPhone dies well before you expect, shuts down unexpectedly at 10–20%, or Battery Health shows significant wear, a battery replacement usually resolves it.
Check Battery Health first
Go to Settings → Battery → Battery Health & Charging. Apple considers a battery that has dropped below 80% of its original capacity to be significantly worn — below that point, reduced runtime and unexpected shutdowns under heavy use become a lot more likely. It’s the single most useful number before deciding whether a replacement makes sense.
Battery, or something else?
- Battery: capacity shown well below 100% in Battery Health, shutdowns under normal use, the phone feeling noticeably slower than it used to under load
- Charging port or cable: the phone charges slowly, inconsistently, or only at certain angles — that’s usually a connection problem, not the battery itself
- Software: a sudden battery drain right after an update or a new app is sometimes background activity, not hardware — worth a restart before assuming it’s the battery
Before your repair
A battery replacement doesn’t touch your storage, so data loss isn’t a typical concern the way it can be with a screen repair. If your phone is several years old, it’s worth a quick look at Repair vs. Replace before booking — sometimes a battery is the right fix, sometimes it’s not, and that depends on more than just the battery.