How to determine the model of the battery in the smartphone Xiaomi: all the ways

The battery is the heart of your Xiaomi smartphone, which determines battery life, charging speed and even overall device performance. But how do you know which battery is installed in your model? This information is critical if you are planning a battery replacement, want to check its originality or just interested in technical specifications. Unfortunately, Xiaomi does not always specify details about the battery in the documentation, and in some cases, data can be hidden in system files.

In this article, we will discuss 5 proven ways to determine the battery model in Xiaomi, Redmi and POCO phones – from simple (via phone settings) to advanced (disassembling the case and reading the markings).

⚠️ Note: If your smartphone is warranty, disassembling the case to inspect the battery may result in its loss.

1. Method: Checking through phone settings

The fastest and safest method is to look at battery information in standard MIUI settings. Unfortunately, not all Xiaomi models display detailed data, but it’s worth a try.

Open the Settings menu → About phone → General information. In some firmware, the path may differ: Settings → Battery and Performance → Battery status. Here you will see:

• 🔋 Battery capacity (e.g. 5000 mAh)
• 📊 Level of wear (if maintained)
• 🔧 Type of battery (e.g. Li-Polymer)

However, the battery model (article) in this menu is displayed extremely rarely - usually only on flagship models like Xiaomi 12S Ultra or MIX Fold 2. If you have a budget Redmi, chances are that there will be only general information here.

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If you don’t have battery data in your settings, try upgrading to the latest version of MIUI – sometimes new builds add more information.

Method: Use of the Engineering Menu (#4636##)

The Android Hidden Engineering Menu provides advanced data on the hardware of the smartphone, including the battery.

1. Open the Phone app.
2. Enter the combination: ##4636## (some models may not work).
3. Select the Battery Information tab.

Here you'll see:

• 📏 Charge level in percentage and volts
• 🔌 Battery temperature (normal: 25–40)°C)
• 🔄 Status (Good/Unknown)
• 🆔 Serial number (sometimes coincides with the article)

⚠️ Note: Some Xiaomi models (especially with the MIUI 13+) The engineering menu can be blocked, and then use alternative methods.

Method: Applications for diagnostics (AccuBattery, CPU-Z)

If the system methods don't work, third-party utilities will come to the rescue.

1. AccuBattery (free on Google Play)

• 📲 Shows real capacity (taking into account wear)
• 📈 Builds discharge/charge schedules
• 🔍 Sometimes determines the manufacturer of the battery, for example, ATL or SDI)

2. CPU-Z (Battery tab)

• 📋 Displays technology (Li-ion/Li-Po)
• 🔢 Shows voltage and temperature
• 🔍 Can output the battery serial number

⚠️ Note: Apps don't always show an exact model of the battery, but they help to assess its condition.

Method: Disassembly of the phone and inspection of the battery

If the software methods fail, the most reliable (but risky) way is to take the phone apart and look at the labels on the battery itself, the only method that is guaranteed to show the exact article.

How to disassemble Xiaomi to inspect the battery:

1. Turn off the phone and remove it. SIM-map.
2. Heat the back cover with a hair dryer (60–80°C) to soften the glue.
3. Carefully tuck the lid with a plastic spatula (start at the corner next to the power button).
4. Disconnect the battery plume (if it interferes) and take a picture of the marking.

🔍 Where to look for the article:

• 🏷️ On a white sticker on the battery (for example, BM4B For the Redmi Note 10 Pro)
• 📜 Under the barcode (may contain letters) ATL or SDI — producer)
• 🔢 Next to the contacts (digital code, for example, HB436)

⚠️ Warning: Disassembling the phone without experience can cause damage to the plumes or detachment of the battery.

Method: Definition by phone model (compatibility table)

If you don’t need an exact article, but only a compatible replacement, you can use the standard battery table for popular Xiaomi models. Original batteries are usually marked with the letters BM (for example, BM40), and analogues are HB.

🔍 How to use the table:

• 🔍 Find your model in the first column.
• 📋 Remember the article from the second column (for example, BM40).
• 🛒 When buying a replacement, look for a battery with the same item or marked as compatible.

⚠️ Note: Batteries with the same capacity (e.g., 5000 mAh) may have different connectors or sizes.

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If you buy a non-original battery, choose a proven manufacturer: ATL (Japan), SDI (Korea) or Lishen (China), cheap analogues can quickly fail or swell.

Frequent questions about Xiaomi batteries