How to check the battery status of Xiaomi on Android: the complete guide

Xiaomi smartphones are famous for their optimal value for money, but even the most reliable models will eventually experience battery wear. A 20-30% drop in capacity is normal after 2-3 years of use, but how do you know for sure that your Redmi, POCO or Mi battery needs replacement? In this article, we will analyze all available methods of verification, from hidden engineering menus to professional applications.

It's important to understand that battery life is not just about wear, but also about real capacity, internal resistance, and discharge rates, so for example, a battery with 85 percent health can run out in 4 hours when it's in active use if it's resistance is increased because of overheating, and we're going to show you how to get that data without any special equipment.

1. Check through the engineering menu (codes ##)

The fastest way is to use hidden service commands. These work on most Xiaomi smartphones (including Redmi Note 10/11/12, POCO X3/X4/X5, Mi 11/12/13), but may vary depending on the version of MIUI.

Enter in the standard application Phone one of the combinations:

• 📱 ##4636## - Universal code for Android (section "Battery Information")
• 🔋 ##6484## — battery test (works on Mi) A1/A2 some POCO)
• 🛠️ ##64663## - Engineering menu (shows voltage, temperature, charge level)

Once you enter the code, you'll see the technical data.

• Battery Level – must match the indicator in the status bar.
• Voltage - the norm for Li-Pol batteries: 3.7-4.4 V. If below 3.5 V at 20% charge - the battery is critically worn.
• Temperature - optimally 20-40 ° C. Exceeding 45 ° C reduces the service life.

⚠️ Warning: Don't enter random codes ##7780## It resets the settings, and *2767*3855# fully formatted phone.

2. Diagnostic applications: AccuBattery, CPU-Z, AIDA64

Service codes give you limited information. Use specialized tools for detailed analysis. 5 popular applications and selected the top-3 for data accuracy and convenience.

How to use AccuBattery (the most accurate option):

1. Install the app and allow access to battery statistics.
2. Charge your phone to 100% and wait for the notification “Charge is complete” (don’t turn off charging immediately after 100%).
3. In the Health section, you'll see a capacity score, for example, if you're reading 3800 mAh instead of the factory's 5,000 mAh, you'll see a 24% wear rate.

Turn off battery optimization for the application | Charge your phone to 100% without interruptions |Do not use your phone while charging |Repeat the cycle 2-3 times for accuracy-->

3.Analysis through ADB (for advanced users)

If you want the most accurate data, connect your smartphone to your PC and use the Android Debug Bridge (ADB), which will show the real number of charging cycles and current capacity, which are hidden in standard settings.

Instructions:

1. Turn on USB Debugging in Settings → About Phone → MIUI version (click 7 times on the line with the version).
2. Connect the phone to the PC and confirm access.
3. In the command line (Windows) or terminal (Mac/Linux) enter:

adb shell


dumpsys battery

In the answer, find the lines:

• Capacity is the current charge in %.
• Voltage - voltage in μV (divided by 1000 for volts).
• Temperature: temperature in °C (divided by 10).
• charge_counter — the number of mAhs that have passed through the battery over the entire time (divide by factory capacity to find out the approximate number of cycles).

⚠️ Warning: The dumpsys batteryreset command resets the battery meter. Don't use it unnecessarily, it will distort the wear statistics.

4.Visual signs of battery wear

You don't always need software to tell you that your battery has degraded.

• ⚡ Fast discharge: the phone loses 20-30% of charge in 1-2 hours in standby mode (when the screen is turned off).
• 🔥 Overheating: the body heats up to 40°C+ charging or simple.
• 📉 Unstable percentage: charge jumps (e.g., from 50% to 20% after rebooting).
• 🔌 Slow charging: from 0% to 100% for more than 3 hours (with a serviceable charger).
• 💥 Bloating: The screen or back cover has been raised (critical case – requires immediate replacement!).

If you notice bloating, immediately turn off the phone and do not use it until you change the battery. Lithium polymer batteries in this state can ignite.

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To check for bloating, put your phone on a flat surface and press the screen slightly around the edges, and if there are "waves" or gaps, the battery is swelling.

Comparison with factory characteristics

The manufacturer claims that Xiaomi battery should retain ≥80% capacity after 500 full charge cycles, which in practice depends on the model and operating conditions.

To compare your performance with the norm:

1. Find the factory capacity of your model (see spoiler above).
2. Multiply it by 0.8, which is the minimum capacity after 2 years of use.
3. Compare it to AccuBattery or ADB.

Example: For a POCO F3 with a factory 4520 mAh, the critical threshold will be 4520 × 0.8 = 3616 mAh. If your battery shows ≤3500 mAh, it’s time to replace it.

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Even if the phone is holding a charge "normally," but the capacity has dropped below 80% of the factory's, the battery is running at its limit, which increases the risk of sudden shutdown and overheating.

6. When is it time to change the battery?

Battery replacement is required in three cases:

1. Capacity ≤70% of the factory (for example, 3500 mAh instead of 5000 mAh).
2. Bloating or mechanical damage (even minor).
3. The phone turns off at 15-30% charge (calibration failure or critical wear).

The cost of replacement in Xiaomi service centers:

• 💰 Redmi/POCO (budgetary models): 1500–2500 ₽.
• 💰 Mi 11/12/13 series: 3000–5000 ₽ (battery).
• 💰 Self-sustained replacement: 800-1500 ₽ (risk of losing the guarantee!).

Where to replace:

• 🏬 Official Xiaomi Service Centers (list on site).
• 🔧 Authorized Partners (check reviews!).
• 🛠️ Independently (requires experience and tools: sucker, mediator, hair dryer).

⚠️ Warning: After you change the battery, calibrate: fully discharge the phone before you turn off, then charge to 100% without interruption. Repeat 2-3 times.

7.How to extend the life of Xiaomi battery?

Compliance with these rules will slow down the degradation of the battery by 30-50%:

• 🔌 Charging: Use original or certified chargers. Avoid "cheap" cables because they overheat the controller.
• ☀️ Temperature: Do not leave your phone in the sun or near heat sources (e.g., on a car torpedo).
• 📴 Modes: Enable Lean Mode (Settings) → Battery) and limit the background activity of applications.
• 🔄 Cycles: Try not to discharge the phone below 20% and keep it charging after 100%. Optimal range is 30-80%.
• 🛌 Storage: If you don’t use your phone for long, charge it up to 50% and turn it off.

Myths about batteries that you should not believe:

• ❌ "You need to completely discharge the phone once a month, which was true for Ni-MH batteries, but not for Li-Pol.
• ❌ "Charging at night spoils the battery — modern smartphones automatically turn off power after 100%.
• ❌ "Wireless charging is more harmful than wired charging – the difference in wear is minimal (1-2% per year).

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MIUI 14+ has a hidden function called “Optimize Charging.” Turn it on to Settings → Battery → In addition, the phone automatically limits its charge to 80% at night.

FAQ: Frequent questions about Xiaomi battery