To prevent overheating when charging, please avoid:

 ● Using a phone case thicker than 2 mm.

 ● Placing metal accessories, credit cards, or pop sockets between your phone and the power bank.

If overheating occurs, the charger will enter overheat-protection mode and pause charging. If this happens, please:

 ● Disconnect phone from the charger, take off phone case, and let your phone and charger cool down.

 ● Close apps that are not being used on your phone.

 ● When your phone and charger have cooled down, resume charging.

If you’re still having problems with the product, you can contact ESR Customer Support for further assistance. Make sure to briefly mention the tips you’ve already tried so that we can find a faster solution for you.

Please check:

 ● Your phone is an iPhone with MagSafe (iPhone 12 series or later).

 ● Use the included charging cable.

 ● Your power adapter or USB port outputs at least 20W. 

 ● Your protective case is less than 2mm thick.

 ● There are no metal accessories, credit cards, or pop sockets between your phone and the charger.

Additional information about wireless charging speeds:

 ● Wireless charging is not as fast as wired charging.

 ● Limiting the number of applications you have open simultaneously on your phone will improve charging speed.

 ● High temperatures will reduce charging speed and restrict power, which is something that happens during wireless charging.

 ● When your iPhone stops charging at 80%, it may be due to "Optimized Battery Charging". Please check whether turning it off helps. Click Settings > Battery > Battery Health > Turn off "Optimized Battery Charging". If you haven't enabled "Optimized Battery Charging", the issue is mostly caused by the iOS upgrade. Please upgrade or wait for the next system upgrade.

If you’re still having problems with the product, you can contact ESR Customer Support for further assistance. Make sure to briefly mention the tips you’ve already tried so that we can find a faster solution for you.

Phone attachment issues are often caused by incompatible phone models or non-magnetic cases.

Please check:

● Your phone is an iPhone with MagSafe (iPhone 12 series or later).

● Your case is either a MagSafe case or a case with a magnetic ring.