How Do I Know If My Iphone Battery Needs Replacing. Hold down the Option key and click the battery icon on the menu bar. According to Apple the battery can receive 500 complete charge cycles while retaining 80 percent of its original capacity.

Replacing an old iPhone battery with a new one will restore performance to normal. If you need a battery replacement your warranty probably bit the big one already. How to tell if your iPhone battery needs replacing In late 2017 Apple acknowledged it had deliberately and secretly throttled some of its older phones to stabilize performance caused by aging.
When a battery gets closer to the end of its lifespan the amount of charge and the ability to provide power reduces.
The average iPhone battery retains only 80 percent of its original. Its easy to tell if it needs replacing. The Battery page in your iPhones settings has info about your battery usage. Open the Settings app.
