Optimized charging on Xiaomi: how to turn on and configure for a long battery life

Today’s Xiaomi smartphones feature advanced charging management algorithms that help keep the battery capacity for years to come. One of the key features is optimized charging, a technology that limits battery power to the next level. 80-90% on a daily basis and bringing it up to 100% This reduces the wear and tear of lithium-ion cells and increases the number of charging cycles in the cell. 2-3 once.

However, many users are unaware of the existence of this feature or face difficulties in setting it up. In this article, we will discuss how to enable optimized charging on different Xiaomi models (from budget Redmi to flagship Xiaomi 14), what nuances are important to consider when using, and what to do if the Suddenly function disappeared after the update. MIUI. You will also find answers to frequent questions: does optimization affect the charging speed, can it be turned off for a while, and how to reset the battery settings to the factory.

It is important to understand that charging optimization algorithms may differ depending on the version. MIUI (12/13/14/15) And the models of the device. POCO F5 Xiaomi 13T Extended charging schedule settings are available, while on the Redmi Note 12 We'll look at all the options, including hidden options for power users.

What is an optimized charging and why you need it

Optimized Charging (Adaptive Charging or Battery Saver) is a software algorithm that analyzes your smartphone usage habits and automatically adjusts the charging process. The main goal is to minimize battery life in 100% charge and high temperatures, as these factors accelerate the degradation of lithium-ion batteries.

According to Battery University, battery storage at 100% charge and temperature +30°C reduces its life by 40 percent in a year, and optimized charging solves this problem by saying:

• 📉 Limits the charge to 80-90% normal (threshold is adjusted).
• ⏰ Brings charge to 100% only by scheduled wake time (if sleep mode is enabled).
• 🌡️ Controls the battery temperature by suspending charging when overheating.
• 🔄 Adapts to your schedule (e.g. if you charge your phone at night, the system “learns” and adjusts the process).

In practice, this means that if you plug your smartphone into overnight charging, it will charge quickly to the top of the charger first. 80%, and then slowly bring the charge to 100% ce 7:00 This approach extends the battery life of the battery. 300-500 pre-cycle 800-1000 cycles without significant loss of capacity.

⚠️ Attention: Optimized charging doesn't turn off fast charging, it only adjusts the final threshold. If you need to charge your phone to 100% urgently, you can temporarily turn off the function manually.

What Xiaomi models support optimized charging

Optimized charging is available on most Xiaomi smartphones released after 2019, but its implementation depends on the version. MIUI The following is a compatibility table for popular models:

If your model is not listed in the table, check for the function in the following way: → Battery → Battery settings → Optimized charging. On some devices (e.g. Redmi) 10C) This option may be called Battery Saving Charging or Adaptive Charging.

⚠️ Note: On smartphones with custom firmware (such as LineageOS or Pixel Experience), optimized charging may not work properly or at all.

Step-by-step: how to enable optimized charging

The activation process of the function depends on the version MIUI. Here are the instructions for the most common scenarios: If your interface is different, try the alternative paths at the end of the section.

Method 1: Standard activation (MIUI 14/15)

1. Open Settings (the gear icon on the main screen).
2. Go to the Battery section.
3. Slip on Battery Settings (or additionally if there is no separate item).
4. Choose Optimized Charging.
5. Activate the switch at the top of the screen.
6. (Optional) Set up a charging schedule by setting the time to wake up.

On some devices (e.g. Xiaomi) 13 Ultra) after the function is turned on, a pop-up will appear with a suggestion to adjust the adaptive schedule. If you agree, the system will analyze your habits during the course of the work. 3-5 The day and optimizes charging automatically.

Method 2: For older versions MIUI (12.5 and below)

On the firmware MIUI 12.5 and below, the path to settings may be different:

• 🔧 Settings → Battery and productivity → Battery settings → Charging with battery preservation
• 🔋 Settings → Additionally. → Battery lab → Optimized charging (Developer Mode needs to be enabled)
• ⚡ Settings → Special facilities → Battery functions (on some Redmis)

If the option is not on the menu, check if it is hidden behind the Developer Mode.

1. Go to Settings. → The phone.
2. Tap 7 times on the MIUI version to activate the developer mode.
3. Back to Settings → Additionally. → For developers.
4. Find the option to turn on the battery lab and activate it.

Update MIUI to the latest version

Check the battery level (recommended) 20-80%)

Connect the original cable and power supply

Turn off the power saving modes (if enabled)-->

Method 3: Through a Hidden Menu (for power users)

If standard methods don’t work, you can try activating the function through an engineering menu, which is suitable for Qualcomm Snapdragon-based devices (e.g., Qualcomm Snapdragon, POCO X3, Redmi K40).

1. Open the Phone app.
2. Enter the combination: ##4636###.
3. In the menu that appears, select Battery Information.
4. Scroll down and find Battery charging control.
5. Activate the Enable Adaptive Charging option.

⚠️ Warning: Changes to the engineering menu can cause the device to work in an unstable way. Do not edit other settings unless you are sure of their purpose. After activating optimized charging through this menu, restart your smartphone.

Charging schedule settings and additional options

Simply enabling optimized charging isn’t enough – you need to set your schedule and extra settings correctly to maximize efficiency. Consider the key options available on most Xiaomi devices.

1. Setting the time of awakening

This allows the system to guess when you're going to need a 100% charge.

1. You can tell when you usually wake up (for example, 7:00 a.m.).
2. The smartphone analyzes how long it takes to charge from 80% to 100%.
3. At the right time (for example, at 6:30) the system starts to bring the charge to the maximum, so that by 7:00 the battery was fully charged.

To set the schedule:

1. Go to Settings. → Battery → Optimized charging.
2. Activate the Adaptive Schedule Switch.
3. Specify the time of awakening (in 30 minutes).
4. (Optional) Enable the option to Use geolocation to allow the system to take into account your location (e.g., at home or work).

💡

If you change your schedule frequently (e.g., sleep longer on weekends), turn off the adaptive schedule and use a manual restriction before you can get to the end of the day. 80-90%. This will prevent unexpected charge surges.

Manual limitation of charge level

Some models (e.g. Xiaomi 14 or X-ray) POCO F5) You can manually limit the maximum charge level, and this is useful if you're a user:

• 🔌 Often leave your phone on charge for a long time (for example, on your desktop).
• 🌡️ Use your smartphone in hot climates or under high loads (games, video editing).
• 📦 Store the device without using it for more than a week.

To set a limit:

1. Open the Settings. → Battery → Battery settings → Optimized charging.
2. Slip on Set a charge limit.
3. Choose one of the values: 80%, 85%, 90% or 100%.
4. Confirm your choice.

On the Redmi Note 12 and other budget models, this option may not be available, so use a responsive schedule or turn off manual charging when you reach 80%.

3. Additional settings (for advanced users)

On flagship devices (Xiaomi) 13/14 Series) Extended options available:

• 🔄 Cyclical charging: The battery is discharged to 95% and recharge before 100% every 2-3 The day to prevent the "memory effect".
• ❄️ Temperature control: Charging is suspended when exceeding +35°C (threshold adjustable).
• 📊 Battery statistics: Discharge schedules, number of cycles, current capacity in mAh.

To access these functions:

1. Activate Developer Mode (as described above).
2. Go to Settings. → Additionally. → Battery lab.
3. Enable the options to Show Extended Statistics and Allow Cycling Charging.

Frequent problems and their solutions

Despite the obvious benefits, optimized charging may not work properly. Let's look at typical situations and how to fix them.

1.The function suddenly shut down after the update

This is one of the most common problems, especially after major updates. MIUI (For example, version 13 to version 14:

• 🔄 Resetting the battery settings to factory.
• 📱 Conflict with Custom Themes or Launchers.
• 🔧 Error in the service com.miui.batterysaver.

Decisions:

1. Go to Settings → Applications → Application Management.
2. Find Battery Service and Performance (or Battery Saver).
3. Slip on the Warehouse and select Clear Cache.
4. Reset the device.
5. Re-enable the optimized charging according to the instructions in the section above.

If this doesn’t work, try resetting your battery settings:

1. Open the settings → Battery → Battery settings.
2. Select Reset Battery Settings (or Reset by Default).
3. Confirm the action.

2. the phone does not bring the charge to 100% by the specified time

If the adaptive schedule is not working properly, check the following points:

• ⏰ Is the correct time to wake up? The system only takes into account the alarm clocks set in the standard app.
• 🔌 Are you using the original power supply? Uncertified chargers can knock the algorithm down.
• 📵 Is night flight on? It prevents the system from synchronizing time.
• 🔄 Have you had any dramatic changes to the graph? 3-5 days of adaptation.

For resetting:

1. Turn off optimized charging.
2. Reboot the phone.
3. Turn on the function again and set the actual wake-up time.

3. Fast charging is turned off when optimisation is activated

This is normal system behavior: when you reach 80%, charging automatically goes into gentle mode (usually 5W), If you need to charge your phone quickly to 100%, temporarily turn off optimized charging:

1. Connect the device to the charger.
2. Touch the charging notification in the curtain.
3. Slip on Disable Optimization (or Charge to 100%).

After reaching 100%, the function will automatically turn on again the next time you connect to the network.

💡

If fast charging is turned off before reaching 80%, it may indicate a malfunction of the battery or power supply. → Battery → Battery status.

How to Check If Optimized Charging Works

Many users are questioning whether the feature is actually active, and there are several ways to check this:

Method 1: Through notifications

When optimized charging is enabled, a notification appears when connecting to the network:

• 🔋 Charging is optimized. The battery will be charged to 100% by [time].
• ⚡ Charge limit: 80%.Slip to charge to 100%.

If the notification does not appear, check:

1. Notified for Battery Service in Settings → Notifications.
2. Is not activated mode Do not disturb.

Method 2: Using battery statistics

On devices with MIUI 14/15 A section with detailed statistics is available:

1. Go to Settings → Battery → Battery status.
2. Slip on the charging schedule.
3. Check if there is a plateau on the graph. 80-90% subsequent growth 100% before the time.

Example of correct operation:

22:00 - 80% (beginning of optimization)




02:00 - 80% (level retention)




06:30 - 100% (adjustment before waking up)

Method 3: Through the Engineering Menu (Advanced)

For accurate diagnosis:

1. Enter the code in the phone app: ##4636##.
2. Select Battery Information.
3. Check the settings: Charging enabled must be true. Adaptive charging must be active. Charge limit is the current limit (for example, 80%).

If the settings are different, it means that the function is not working correctly. Try restarting the device or resetting the battery settings.

Tips for Maximum Battery Life Extension

Optimized charging is just one of the tools to keep the battery going. 3-4 Year without noticeable degradation, follow these recommendations:

Optimal charging conditions

• 🌡️ Avoid charging at temperatures below +5°C and above. +35°C. Optimal range: +10..+30°C.
• ☀️ Do not leave your phone in the sun or near heat sources (such as a car torpedo).
• 🔌 Use original or certified cables and power supplies. Cheap accessories can cause overheating.
• 🔋 Try to keep the charge level in range 20-80% routinely.

Energy settings

Activate the following options:

• 📵 Power saving mode at charge level below 20%.
• 🌙 Dark subject (on) AMOLED-The screen saves up to 15% of the charge).
• 🔄 Limiting background activity for unnecessary applications.
• 📶 Automatic switching to 2G low-signal 4G/5G.

To adjust energy saving:

1. Go to Settings. → Battery → Energy saving regimes.
2. Choose Ultra Mode (disables background processes) or Balanced (recommended).
3. In the High Consumption Apps section, limit background activity for social networks and instant messengers.

Calibration of the battery

If the phone suddenly turns off when 10-20% If the charge is incorrect or shows an incorrect level, perform calibration:

1. Discharge the device before automatic shutdown.
2. Connect to the original charger and charge up to 100% without interruptions.
3. Disconnect from the network and again discharge to 0%.
4. Repeat the cycle 2-3 times.

Nana MIUI 14/15 Calibration can be started programmatically:

1. Go to Settings → Battery → Battery settings.
2. Select Battery Calibration.
3. Follow the instructions on the screen (the process will take place) 1-2 hour).

💡

If the problem persists after calibration, check battery wear through the AccuBattery app. At a capacity below 80% of the nominal, it is recommended to replace the battery.

FAQ: Answers to Frequent Questions