Slow Charger Warning on iPhone: Why Does it Appear and How to Fix It
iOS 18 introducedseveral new features, fromhome screen customizationtoiPhone mirroring. One lesser-known but valuable addition is the ability to detect slow chargers. If your iPhone isn’t charging quickly, as it should, you’ll get a clear ‘Slow Charger’ warning in the battery settings. This new feature of iOS 18 may be a surprise. So, we explore why the warning appears and how to fix it.
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Why Do You See a ‘Slow Charger’ Warning?
The ‘Slow Charger’ warning appears in Battery settings (Settings>Battery) on your iPhone when you’re using a charger that isn’t certified for quick charging. Tapping the warning takes you to an Apple Support page (likely still under development). This slow charging alert may appear due to several reasons:
How to Get Rid of the Slow Charger Warning
While the ‘Slow Charger’ warning is harmless and indicates slower charging, you’re able to get rid of it on your iPhone with the following:
Other Factors That Can Slow Down iPhone Charging
Besides the charger and cable, several other factors can contribute to slower charging speeds on your iPhone:
If your iPhone isn’t charging at all, check our guide ontroubleshooting iPhone charging issues.
Keep Your iPhone Charged and Happy
The ‘Slow Charger’ warning in iOS 18 is a helpful notification to ensure you’re using the right charger. It indicates that slow charging is likely due to the charger or cable, not a problem with your iPhone. While you can’t directly measure the power your iPhone draws like on Android (unless you use a power meter cable), this warning helps you determine if there’s an issue with your charger. A well-charged iPhone is a happy iPhone, after all.
Ritik Singh
With over 7 years of experience in tech, Ritik currently heads content at Techwiser.com. His journey started by sharing knowledge and helping others in online communities. That passion soon turned into a career in tech journalism, backed by a formal education in Electronic Media. He’s held editorial roles at GadgetsToUse and PC-Tablet, and has contributed to popular publications like HowToGeek and TheWindowsClub. With over 2,000 how-tos, reviews, and in-depth guides under his belt, Ritik has helped millions of readers get more out of their tech—from smartphones to smart homes.
