How to calibrate the battery on Android after replacement: a complete guide 2026

• 🔄 Go to Settings → System → Reset → Reset battery data (on some firmware the path may differ).
• 🔋 On models Samsung this item may be called Battery optimization.
• Repeat the discharge-charge cycle 1-2 more times.

  This will help the controller more accurately determine the actual capacity.

⚠️ Attention: On phones With Android 14 and new chips (for example Snapdragon 8 Gen 3), the classic method may not work due to optimized power management. In this case, you will need to use engineering menu or ADB commands (see the next section).

Phone model	Number of cycles for calibration	Features
Samsung Galaxy S22/S23	2–3 cycles	Reset required via Device Care → Battery → Settings (⋮) → Optimize
Xiaomi Redmi Note 11/12	1–2 cycles	After calibration, check the settings MIUI Optimization in the developer
Google Pixel 7/8	1 cycle	It is recommended to use the original cable USB-C to USB-C
Realme GT Neo 5	3 cycles	Enable mode Super Power Saving before discharge

Method 2: Calibration through the engineering menu (for advanced users)

If the classic method did not help, you can manually reset the battery data via engineering menu. This method works on most devices with processors Mediatek i Qualcomm, but requires caution - incorrect settings can lead to failures.

Instructions for Mediatek (for example, Redmi 9A, Realme C55):

1. Open the application Phone and enter the combination:

   ##36446337##

2. Go to section Battery Information.
3. Click Battery Calibration and confirm the reset.
4. Perform a full discharge-charge cycle (as in Method 1).

Instructions for Qualcomm (for example, Samsung Galaxy A73, OnePlus Nord 3):

1. Enter in the dialer:

   ##4636##

2. Select Information about battery.
3. Check the parameter Battery health —if it shows Unknown, calibration is required.
4. Connect charging and wait until 100%, then disconnect and discharge to 0%.

⚠️ Attention: On some firmware (for example, ColorOS 13+ or One UI 5+), the engineering menu may be blocked. In this case, use ADB commands (see the next section).

What to do if the engineering menu does not open?

On new versions of Android (12+), manufacturers often block access to the engineering menu via USSD codes:

1. Use applications like MTK Engineering Mode (only for Mediatek).

2. Install Shortcut Master to search for hidden menus.

3. Connect to your PC and use ADB (described below).

Method 3: Calibration via ADB (for experienced users)

If standard methods do not work, you can reset the battery data via Android Debug Bridge (ADB). This method is universal, but requires connecting to a computer.

Step-by-step guide:

1. Install ADB drivers on the PC.
2. Enable USB debugging on the phone:
   • Go to Settings → About phone → Number assembly (press 7 times to unlock developer mode).
   • Go back to Settings → System → For developers and activate USB debugging.
• Connect your phone to the PC and open the command line (cmd in Windows or Terminal in macOS/Linux).
• Enter the commands in order:

  adb shell
  su
  dumpsys battery set ac 1
  dumpsys battery set status 5
  dumpsys battery set level 100
  dumpsys battery set usb 1
  dumpsys battery reset

  If the phone is not rooted, skip the command su.

• Disconnect the cable and discharge the phone until 0%, then charge to 100% without interruption.

⚠️ Attention: ADB commands reset all battery controller dataincluding cycle history. After calibration, the phone may show an inaccurate percentage in the first 2-3 cycles - this is normal.

Common errors during calibration and how to avoid them

Even when following the instructions, users often make mistakes that reduce their efforts to nothing. Here are the most common:

• ⚡ Using a non-original charger —cheap adapters can supply unstable voltage, which disrupts the controller.
• 🔋 Interrupting the charging cycle —if you disconnect the phone from the network by 80%, the calibration will be incomplete.
• 📱 Ignoring temperature —calibration cannot be carried out at temperatures below 10°C or above 35°C.
• 🔄 Skipping battery data reset —without this, the controller will continue to use the old parameters.

Another typical error - calibration through applications from the Play Market (for example, Battery Calibration or AccuBattery). These apps do not have access to low-level controller settings and simply show advice. They can be useful for monitoring, but not for calibration itself.

⚠️ Attention: On phones with Android 14 and new chips (for example, Tensor G3 v Google Pixel 8), some calibration applications may conflict with system optimizations. If after using them the phone begins to discharge faster, reset the battery settings manually.

How to check that calibration was successful

After calibration, you need to make sure that the power controller is working correctly. Here are the signs of a successful procedure:

• 📊 Smooth change in charge percentage —without sudden jumps from 50% to 20%.
• ⏱️ Stable operating time —if before the phone turned off after 4 hours, but now it lasts 6-7, the calibration worked.
• 🔌 Correct charging indication —when connected to the network, the percentage begins to grow immediately, without delay.
• 🌡️ Normal temperature —the phone does not overheat while charging.

For an accurate check, use monitor applications:

• AccuBattery —shows the actual capacity and wear of the battery.
• GSam Battery Monitor —monitors energy consumption by application.
• AIDA64 —displays detailed information about the power controller.

If problems remain after calibration, the following reasons are possible:

• 🔋 Poor quality battery —check the markings and compare with the original.
• 🔧 Bad contact —disassemble the phone and check the battery fastening.
• 📱 Software failure —reset the settings to factory settings.

Additional tips for caring for a new battery

Calibration is only the first step. To make your new battery last longer, follow these recommendations:

• 🔌 Avoid full discharge — optimal charge range: 20–80%.
• ⚡ Do not use fast charging all the time —it accelerates wear. For everyday use, 10–18W is enough.
• 🌡️ Keep an eye on the temperature —do not leave your phone in the sun or near heat sources.
• 📵 Disable unnecessary functions —GPS, NFC, 5G and background synchronization use up energy.
• 🔄 Update the firmware —manufacturers regularly optimize power management.

Critical information: On phones with Android 13+ chips Snapdragon 8 Gen 2/3 function Adaptive charging can automatically limit the charge to 80% to preserve capacity. If you need 100%, disable it in the battery settings.

To extend battery life you can also use:

• Battery Guru - optimizes charging cycles.
• Greenify — pauses energy-intensive applications.
• Servicely —disables unnecessary system processes.

⚠️ Attention: On some models (for example, Samsung Galaxy S23 or Xiaomi 13 Pro), manufacturers block access to deep battery settings. In this case, fine tuning will be required root access, but this will void the warranty.