How to Fixed SLOW CHARGING ⚡

Introduction

This tutorial will guide you through troubleshooting and fixing slow charging issues in your smartphone. If your device is not charging properly or the battery percentage is not increasing, follow these steps to identify and resolve the problem.

Step 1: Check the Charging Port

• Inspect the charging port for dust or rust.
• Use a sharp object or a brush to clean the port.
• Avoid using petrol or any harsh chemicals, as they can damage the phone's components.

Step 2: Test the Battery with a Multimeter

• If cleaning did not resolve the issue, open the phone to access the battery.
• For removable batteries, simply take the battery out. For non-removable batteries, unscrew and carefully remove the back panel.
• Use a multimeter to check the battery voltage:
  • Connect the multimeter probes to the battery terminals.
  • A reading of 4.2 volts indicates that the charging IC is functioning correctly. If the reading is lower, the issue may be with the charging port.

Step 3: Measure Output Voltage from the Charging Port

• With the phone still open, use the multimeter to test the output from the charging port:
  • Connect the multimeter probes to the corresponding terminals in the charging port.
  • A healthy output should be around 5 volts. If the output drops to 4.1 or 4.3 volts, the charging port may be faulty.

Step 4: Replace the Charging Port if Necessary

• If the charging port is weak and cannot provide the necessary voltage, it needs to be replaced.
• Obtain a new charging port compatible with your device.
• Follow the manufacturer's instructions or a tutorial specific to your device model for the replacement process.

Step 5: Check the Charging IC

• If the charging port is functioning correctly but the phone still shows 0% after charging, the issue may be with the charging IC.
• Use a heat station to reflow the solder on the charging IC:
  • Apply heat carefully to avoid damaging surrounding components.
• After reflowing, reassemble the phone and test the charging.

Step 6: Reset the Charging IC

• To reset the charging IC, follow these steps:
  • Plug in the charger without the battery installed for 2 minutes.
  • After 2 minutes, insert the battery while keeping the charger connected.
• This method can sometimes restore functionality if the IC was temporarily non-responsive.

Step 7: Replace the Charging IC if All Else Fails

• If the charging IC is physically damaged or none of the previous steps worked, you will need to replace it.
• Order a new charging IC online or salvage one from a compatible device.
• Ensure you have the necessary tools, such as a rework station and soldering materials, for the replacement.

Conclusion

In summary, resolving slow charging issues involves checking and cleaning the charging port, testing the battery and charging port's output, and potentially replacing faulty components. If none of the methods worked, consider consulting a professional technician. With these steps, you should be able to restore your device's charging capabilities effectively.