Every iPhone battery wears out eventually. The good news: replacing it is quick and costs far less than a new phone. Here’s how to know when it’s time.
1. Battery Health is around 80% or lower
Go to Settings › Battery › Battery Health & Charging. If Maximum Capacity is near or below 80%, or you see a “Service” message, the battery has worn significantly.
2. It shuts down with charge left
A worn battery can’t deliver enough power under load, so the phone may suddenly turn off at 20% or 30%.
3. You can’t get through the day
If you’re charging two or three times a day with normal use, a new battery will help.
4. Your iPhone feels slow
iOS can limit performance to prevent shutdowns when the battery is weak. A new battery often makes the phone feel faster again.
5. It gets hot while charging
Some warmth is normal, but excessive heat can point to a failing battery.
6. The screen is lifting
A swollen battery can push the screen up. Stop charging the phone and get it checked right away — it’s a safety issue.
How to make your next battery last longer
- Avoid leaving your phone in hot cars or direct sun.
- Use Optimized Battery Charging in Settings.
- Use good-quality chargers and cables.
In Brooklyn? Get a free battery check at Avenue D Cellular. iPhone battery replacement starts from $49 and is usually done while you wait.