It's normal for wireless charging to warm up slightly, especially during intensive use like gaming or streaming sessions, but not if it gets too hot.

To prevent overheating while charging, avoid the following:

• Use a case that is 2mm or thicker.
• Place metal accessories, credit cards, or pop sockets between your phone and the power bank.
• Charge the battery and your smartphone at the same time.

If overheating occurs, the power bank will enter overheat protection mode and pause charging.

• Disconnect your smartphone from the power bank, remove the smartphone case, and allow your smartphone and power bank to cool down.
• Close any apps on your smartphone that you are not using.
• Once your smartphone and power bank have cooled down, resume charging.
  

If you are still experiencing issues, please contact ESR Customer Support and let us know what solutions you have already tried so we can help you find a solution faster.

Please confirm:

• Your smartphone must be an iPhone with MagSafe (iPhone 12 series or later).
• The thickness of the protective case must be 2mm or less.
• There should be no metal accessories, credit cards, or pop sockets between your smartphone and the power bank.

Additional information on wireless charging speeds:

• Wireless charging is not as fast as wired charging.
• Limiting the number of applications open simultaneously on your smartphone will improve charging speed.
• High temperatures will reduce charging speed and limit power.
• If your iPhone is stuck at 80% charging, "Optimized Battery Charging" may be the cause. Check if turning it off improves the situation. Go to Settings > Battery > Battery Health > Turn off "Optimized Battery Charging". If you don't have "Optimized Battery Charging" enabled, it is most likely due to an iOS upgrade. Please upgrade or wait for the next system upgrade.

If you are still experiencing issues, please contact ESR Customer Support and let us know what solutions you have already tried so we can help you find a solution faster.

The 5,000mAh mobile battery is lightweight and easy to carry, and can be used as a second battery to charge your smartphone.

If you use your smartphone a lot, we recommend a 10,000mAh mobile battery.

• Use within an operating temperature range of 0°C to 35°C.
• Do not expose the mobile battery to rain, snow or high humidity.
• If your power bank becomes swollen or extremely hot, discontinue use immediately. A damaged battery may behave unpredictably and pose a risk of fire, explosion or personal injury.
• Do not disassemble.
• When not using the mobile battery, turn it off.