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Troubleshooting for Battery Replacement

phone battery

Here are common issues and how to resolve. Note: new batteries need to be calibrated and go through a few cycles before the newly installed battery is synced with the device. Typically after a few days, new battery issues resolve themselves. We recommend trying steps below and giving it a little time.


Calibrate New Battery

Calibrate your new battery so your device iOS system will calculate the actual life correctly of your battery . This is important so your device doesn't just turn off and the iOS says incorrectly there is battery life or vice versa.


Charge it to 100% and keep charging it for a few hours.
Use your device until it shuts off due to low battery and battery below 10%.
Charge it uninterrupted to 100%.


Battery is not holding a charge

Troubleshoot Steps:
  1. Check your battery status on your phone
  2. On your phone Settings > select battery
  3. Close any apps that are running in the background that are consuming too much power
  4. Check background app activity> in setting go to General and Background App Refresh.
  5. Here you can check to see which apps are running in the background and check to see percentage of usage by app.
  6. To save battery life, you can either turn off background app and refresh all together
  7. After having done step 1 and 2, you still experiencing fast battery drain you may need to calibrate the battery.
  8. Calibrating a battery is easy. Let your iPhone’s battery drop to 0% and until it shuts off automatically. Then let it charge uninterrupted back to 100%


My iPhone is showing "Service" or "No battery health info

Troubleshoot Steps:

  1. After replacing your battery the Battery Health feature on your iPhone may display "Service" and a message about needing to have your phone checked by an authorized service provider. iOS shows this message anytime a battery is replaced by anyone other than an authorized service provider.
  2. The battery and phone are fine. Phone will function normally other than Battery Health not reporting the health of the battery.


Battery percentage keeps showing 1%

This means the battery is not installed well. Or the battery connector is damaged

Troubleshoot Steps:

  1. Check the battery connector first.
  2. If connector ok, then follow steps to re-install the battery.


My phone won't turn on

Battery protecting mode activated after stored on shelf in warehouse

Troubleshoot Steps:

  1. Activate the battery: connect the phone with the power adapter first, then install the battery.
  2. Charge for 5-6 hours


My phone is charging slow

Battery protecting mode activated after stored on shelf in warehouse

Troubleshoot Steps:

  1. Activate the battery: connect the phone with the power adapter first, then install the battery.
  2. Charge for 5-6 hours


My battery is fast draining

False reading of battery percentage after stored in warehouse OR battery percentage mismatch

Troubleshoot Steps:

  1. Let battery go through several cycles of use
  2. Battery should be back to normal then


iPhone screen is black after replacing battery

The iPhone screen works, but the screen is black. The backlight is not working. When attaching the screen, you may have noticed a puff of smoke and smelled a burn odor.

To confirm that the backlight is no longer working, disconnect the battery, reconnect it, then plug in a USB lightning cable. Immediately shine a bright light on the center the screen and you should be able to see a faint apple logo. That will confirm that there is a problem. This can happen if the iPhone is not turned off or the battery is not disconnect before starting repair. With the iPhone 6s and the iPhone 6s Plus, the device still receives power when the phone is powered off so you have to disconnect the battery as well.

To resolve, you will need to replace the Backlight or the complete LCD.