How to know exactly what battery is in your Xiaomi Redmi: from model to capacity

Xiaomi Redmi smartphones are known for their value for money, but even the most reliable devices require battery replacement over time. The problem is that the manufacturer rarely indicates the exact model of the battery on the case or in the documentation. Without this information, it is difficult to find a quality analogue - you risk running into a fake with an understated capacity or incompatible parts. In this article, we will discuss all the working methods for determining the type of battery in your Redmi - from software methods to visual inspection of the board.

It's important to understand that battery models are different even for the same line of devices. For example, the Redmi Note 10 and Redmi Note 10 Pro have batteries with different capacities (5000 mAh vs 5020 mAh) and connectors. 9A redmi 9C So, apparently identical batteries can have different charging controllers, and we've collected data from popular models and added unique life hacks that you wouldn't find in standard instructions.

1. Check through phone settings: what you can learn without disassembly

The safest way is to use built-in tools. MIUI. Unfortunately, the manufacturer does not display the model of the battery in the interface, but you can get indirect data:

Open the Settings. → The phone. → General information. You'll see here:

• 🔋 Model of device (e.g, M2003J15SC Redmi Note 9 Pro is the key to finding a compatible battery.
• 📏 Battery capacity (e.g, "5020 mAh is typical. Note that the actual capacity may vary by 5-10% wear-and-wear.
• 🔄 Battery status (in some firmwares displayed as "Good" or "Replacement recommended").

This data is not enough to accurately match, but it will help to weed out clearly incompatible options. 8A The 5,000mAh battery is listed, and the seller offers a 4,000mAh battery for all Redmi models.

⚠️ Note: In some regional firmware, the About Phone section may hide the real capacity. 8T For Europe, the number is 4,000 mAh, although the physical battery is 5,000 mAh. Check the data through third-party applications (more on this below).

2. Secret engineering codes: how to extract hidden information

With the help of service USSD-And you can get data that the standard interface doesn't show, and these commands run on most Xiaomi devices with Qualcomm or Mediatek processors:

Open the phone application and enter:

##4636##

In the menu that opens, select Battery Information. Here you will see:

• 🔋 Charge level (in percent and millivolts).
• 🔌 Temperature (normal: 25-40)°C when charging).
• 📊 Voltage (e.g. 4.35 V when fully charged).
• 🔄 Condition (e.g., "Charging" or "Discharging").

Unfortunately, the battery model doesn't show up here, but you can copy the voltage and current data, which is useful when you're choosing a replacement. 9S The charging current exceeds 2.5 A, and the proposed battery is designed for 2 A - it will quickly fail.

Another useful code (not working on all models):

##284##

It opens a battery test where you can see the actual capacity (not the one claimed by the manufacturer), and if it's below 80 percent of the value, it's time to change the battery.

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If the codes don't work, try typing them in without a symbol at the end or the beginning. MIUI You can dial #4636# and wait for the automatic transition.

3. Diagnostic applications: top-3 data-detailed utilities

Third-party apps often show more information than embedded tools, and we tested dozens of utilities and selected the three most accurate ones:

The most informative annex — AIDA64. It can show an exact model of the battery in BMxx format (e.g., the battery is a model of the battery, BM47 For Redmi Note 9 Pro, if the controller supports the transmission of this data:

1. Open AIDA64 and go to the Battery section.
2. Scroll to the Battery Properties block.
3. Look for the device name or model.

If you're showing zeros or "unknown" instead of a model, the manufacturer has blocked access to that data, and only a physical examination will help.

⚠️ Note: Apps like AccuBattery can show low capacity right after installation. 2-3 day-to-day active monitoring.

4. Physical inspection: where to look for battery marking

If the software methods don't work, you'll have to take the phone apart. This is the last, but most reliable way.

• 🔌 Turn off the phone and remove it. SIM-map.
• 🔧 Prepare a plastic spatula (metal tools can damage the body).
• 📸 Take a picture of the location of the plumes before disconnecting.

The battery in Xiaomi Redmi is usually under the back cover.

• 🏷️ White sticker (contains model, capacity, date of production).
• 🔢 The battery body itself (engraved symbols, for example, HB4164L3ECW).
• 🔌 Charging controller (small charge on battery wire).

Examples of markings for popular models:

• Redmi Note 10 Pro: BM4B (5020 mAh, Sunwoda manufacturer).
• Redmi 9A: HB4164L3ECW (5000 mAh, manufacturer Huapu).
• Redmi Note 8 Pro: BM47 (4500 mAh, manufacturer Lishen).

If the sticker is erased or missing, note the color of the wire connecting the battery to the motherboard. Xiaomi uses standardized color labeling:

• 🔴 Red. + Black: Standard configuration (most models).
• 🟢 Green. + Black: batteries with fast charging (30W+).
• 🔵 Blue + Black: special versions (for example, for the Indian market).

Turn off your phone and wait for it to cool down.|Use a plastic spatula, not a knife|Disconnect the battery before working with plumes|Keep the screws in separate bags with signatures|Do not touch the battery contacts with metal objects.-->

5. How to decipher a battery model: what letters and numbers mean

Xiaomi battery labeling follows a certain pattern. HB4164L3ECW-50 (Redmi battery 9A):

• HB — Manufacturer's code (Huapu Battery: BM — Sunwoda (the most common). BL — Lishen. ATL — Amperex (less common).
• 4164 - Internal article (may indicate a series of devices)
• L3E — version code (may differ from region to region).
• CW — chemical (CW = Li-Co, MN = Li-Mn).
• 50 — tenth-percentage (50 = 5000 mAhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh).

Knowing this decoding, you can check the compatibility of batteries, for example, if your Redmi Note 7 is worth a lot of money. BM43 (4000 mAh) and the seller offers BM47 (4500 mAh is an incompatible replacement, despite the similarity, and the difference in capacity will cause the charging controller to miscalibrate.

Pay special attention to the manufacturer.Sunwoda batteries (BM) Lishen (BL) They are considered the most reliable, while Huapu (HB) More common in budget models and have a lower charging cycle life.

6. Compatibility table: batteries for popular Redmi models

We have collected battery data for the most common Xiaomi Redmi smartphones, and note that even within the same model, there may be different versions of batteries (for example, for the European and Asian markets).

If your model is not in the table, search by device code. For example, for Redmi Note 11, type in Google the request: battery for the device. M2101K7AG site:4pda.ru. On the forums often post photos of the original batteries with markings.

Remember, capacity compatibility doesn't guarantee controller compatibility. 9S (5020 mAh) is externally identical to the battery from POCO X3 NFC, But it has a different charging protocol, and using an incompatible battery can lead to a different charging protocol:

• ⚡ Failures in fast charging.
• 🔥 Overheating (risk of swelling).
• 📉 Rapid wear (from 1000 cycles to 300 cycles).

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Never buy a battery unless the seller can provide a photo of the original labeling. Even if it looks identical, the internal electronics may differ.

7.Where to buy the original battery: verified sources

Xiaomi’s parts market is flooded with fakes, and our tests show that up to 60 percent of the batteries on AliExpress and eBay have undercapacity or low-quality controllers, and we recommend the following sources:

• 🏬 Xiaomi Official Service Centers: Guarantee 6 The price of the 20-30% above the market, but the original detail.
• 🛒 Shops with a proven reputation: 4PDA Market (Batteries section) Xiaomi Today (European warehouses) Beru.ru (look for sellers with a rating above 95%).
• 🌍 Foreign sites: Kimovil (Spain, original parts). ETK (Germany, supplier for service centers).

When buying, pay attention to:

1. Photo tagging – the seller must provide a photo of the real battery, not a stock image.
2. Thickness and weight – the original battery for the Redmi Note 10 Pro weighs ~150 Fakes are often easier to counterfeit. 20-30 s.
3. The presence of a controller - the original it is sealed in a heat shrink tube with the manufacturer's logo.

The cost of the original battery for Xiaomi Redmi (2023)

• 💰 Redmi 9A/9C: 800–1200 ₽.
• 💰 Redmi Note 10/11: 1500–2000 ₽.
• 💰 Redmi Note 8/9 Pro: 1200–1800 ₽.

⚠️ Warning: Batteries labeled "For Xiaomi" or "Compatible with" are 99% fakes. Original parts are factory-labeled only without mentioning the brand.

8 Frequent battery replacement errors and how to avoid them

Even if you choose the right battery, unprofessional replacement can cause your phone to break down.

• 🔌 Metal tools: When disassembling the body, metal can close the contacts of the battery, which will lead to instant discharge or even fire. Always use plastic blades or mediators.
• 🔋 Battery disconnection without discharge: If the battery is charged more than 25%, If you turn off the plume, you may experience a power surge that will damage the motherboard. 10-15%.
• 📱 Insulation of protective film: The original Xiaomi batteries have an insulating film between the battery and the body. If it is not returned to its place, the metal parts of the case can close contacts.
• 🔧 Tug-up screws: Redmi's back cover screws are of different lengths. If you pull a long screw, it can pierce the battery. Use a screwdriver with a torque limiter (or twist manually without effort).

After replacing the battery, be sure to calibrate:

1. Charge your phone to 100% and hold on charging for another 1 hour.
2. Turn off charging and use the phone until it is fully discharged (before it is turned off).
3. Repeat the cycle 2-3 times.

This will help the controller to correctly determine the new battery capacity.

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If the battery is discharged quickly after replacement, check the energy saving settings. MIUI Go to Settings. → Battery → Performance mode and select "Balanced".

FAQ: Answers to Frequent Questions