Do charging cases ruin your battery?
Michael Henderson
Published Mar 08, 2026
Do charging cases ruin your battery?
Are charging phone cases bad for your phone? A phone case with a built-in backup battery may seem handy. But as we mentioned, heat is bad for a battery, and a phone case that doubles as a charger is both going to emit heat itself and cause your battery to warm up while charging.
Does the Apple charging case ruin your battery?
The battery isn’t effected by the smart case as the iPhone knows when it connected as will only use the battery the iPhone needs.
Do battery cases charge your phone?
Charging Options: While most battery cases nowadays use wireless Qi-enabled charging, some still plug into your phone’s lightning port or charge via a micro USB. This makes it harder to listen to music with wired headphones, or connect your phone to your computer if you’re trying to charge at the same time.
Is battery case good for iPhone?
Apple’s Smart Battery Case is a great way to protect your iPhone and give it some extra power (at the cost of a bit of added bulk). iPhones regulate their own charging cycles and will stop charging when the battery is at capacity.
How do I turn off Apple charging case?
It is normal for your iPhone to continue charging whenever the Smart Battery Case has a charge. This will not harm the battery in your iPhone and it is not possible to “turn off” the case.
Can you turn off the Apple charging case?
You cannot turn the case off, and the thing about it shortening your battery life is a very common misconception.
How do you charge an iPhone charging case?
Charge your Smart Battery Case
- Plug the Lightning to USB cable that came with your iPhone into the Lightning connector on the case.
- Plug the other end of the cable into an Apple USB power adapter, then plug the adapter into a power outlet.
- You’ll see an amber status light while the case is charging.
How do you charge a battery case?
Plug your Lightning to USB Cable into the port on the power adapter. Then plug in your Smart Battery Case on the Lightning end. If your phone is inside the Smart Battery Case, the iPhone will charge first, and once it reaches 80 percent, the Smart Battery Case starts charging.
Does Smart Battery Case degrade battery?
How long does the Apple charging case last?
Apple says the iPhone XR version of the case extends talk time to 39 hours (from 25), internet use to 22 hours (from 15), and video playback up to 27 hours (from 16).