Battery for Xiaomi Redmi 4 Pro: how to choose, replace and extend the life of the battery

Xiaomi Redmi 4 Pro – one of the most popular budget smartphones 2017 But over the years, even the most reliable battery loses capacity: the phone starts to run out in a few hours, turns off when you're in the dark. 20-30% If you're facing problems like this, it's time to think about replacing the battery.

In this article, we'll look at what battery you need for the Redmi 4 Pro, how to tell the difference between the original and the fake, what analogues to consider, and give you step-by-step instructions on how to replace it. Also, you'll learn how to use a new battery to last longer. If you've never disassembled a smartphone, don't worry: the replacement process is simple, and you can handle our tips without the help of a service center.

Technical characteristics of the Xiaomi Redmi 4 Pro battery

Smartphone Xiaomi Redmi 4 Pro (codename markw) is equipped with a non-removable lithium-polymer battery with the following parameters:

• 🔋 Capacity: 4100 MAh (nominal), the actual capacity after 2-3 years of use often fall to 60-70% baseline.
• 🔌 Rated voltage: 3.85 V (typical for Li-Po batteries).
• 📏 Sizes: ~145 × 70 × 3.5 mm (exact dimensions may vary slightly from manufacturer to manufacturer).
• 🔗 Connector: standard 2-pin plug with thermistor (for protection against overheating).
• 🔄 Number of charging cycles: ~500 (the capacity is then reduced to 80% of the original capacity).

Important: the network often confuses the Redmi 4 Pro with other models of the Redmi 4 series (for example, Redmi). 4A They have different batteries! The Redmi 4 Pro only has a 4100mAh battery, which is a Redmi battery. 4X (4000 mAh) or Redmi Note 4 (4100 mAh, but of a different shape) are incompatible!

To know exactly the model of your smartphone, go to Settings → The phone. → If it says Redmi 4 Pro or 2017117 (the international version) you're on the right track.

Original vs. Analogues: What to choose for a replacement

When replacing the battery, users have a dilemma: buy the original battery from Xiaomi or save on a quality analogue.

Official Xiaomi batteries are sold in branded Mi Store, on AliExpress (at verified sellers with a higher rating). 98%) on Wildberries/Ozon (Look for the reference to "Original Xiaomi" in the description:

• 🏷️ Hologram on the package (must change color when tilted).
• 🔢 Serial number (can be checked on the Xiaomi website through the support form).
• 📦 Package: In the box must be an instruction in Chinese/English and a protective film on the battery.

If the original is too expensive, consider the analogues from proven brands:

• 🔋 Baseus – Reliable batteries with a real capacity of 4000+ mAhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh.
• 🔌 Remax – budget option with good reviews (but check the production date).
• 🛡️ Patona – German brand, 12 months warranty.

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Before buying, ask the seller to send a photo of the battery from the back - the original should be the Xiaomi logo, the date of production and the original. QR-code.

How to check the status of the battery before replacing

Before you buy a new battery, make sure it's the problem. Here are 3 ways to diagnose:

1. Visual inspection: if the battery is swollen (the phone case is deformed, the screen “goes away”), it must be replaced urgently – it is dangerous!
2. Checking through the phone menu: go to Settings → Battery → Battery status: If the capacity is less than 80% of the original capacity (e.g., 3200 mAh instead of 4100), the battery is worn out.
3. Use of applications: install AccuBattery (Android) or AIDA64. They will show the real capacity, the number of charging cycles and temperature.

⚠️ Warning: If the phone suddenly turns off 20-40% If you're charging, it's a sign of a very bad wear on the battery controller, and if you're changing the battery, it might not solve the problem, but you'll need a board diagnosis.

Also pay attention to the working hours:

• ⏳ Normal: with an average load (social networks, messengers) the phone holds 1.5-2 day-day.
• ⚡ Critical wear: discharged for 4-6 hours without active use.

Step-by-step instructions for replacing the battery

Replacing the battery in the Redmi 4 Pro doesn’t require a soldering iron or special skills, but it will require care.

• 🔧 Plastic blade (or mediator).
• ✂️ Thin screwdriver (cross, size) PH00).
• 🔥 Fryer (for softening glue).
• 🧴 Isopropyl alcohol (for cleaning contacts).
• 📦 New battery with duct tape.

Step 1. Turn off the phone and remove the back cover

1. Turn off your smartphone and remove it. SIM-map.
2. Heat the edge of the back cover with a hair dryer (temperature) ~60°C) during 1-2 minutes, it'll soften the glue.
3. Insert a plastic spatula into the gap between the lid and the body (start at the bottom corner) and gently tuck in.

Step 2. Unplug the plumes.

1. Under the lid, you'll see a battery glued to the housing, and there are plumes at the top, and you have to disconnect them so that you don't damage them.
2. Unscrew the 4 screws (marked with red circles in the photo below) and gently lift the metal plate protecting the connectors.
3. Disconnect the battery plumes and display with a spatula (don’t pull the wires!).

Step 3: Remove the old battery

1. There are 2 tapes of glue under the battery, put a shovel over them and pull the "tongues" (they are usually black or yellow).
2. If the glue is too strong, drop a little isopropyl alcohol under the battery - it will dissolve the glue behind the battery. 5-10 minute.
3. Carefully remove the battery, do not rot it and do not press on the center (risk of short circuit!).

Step 4: Install a new battery

1. Clean the installation site from the residues of glue with alcohol.
2. Remove the protective film from the new battery and glue it to the place of the old one (adhesive tape usually comes with a kit).
3. Connect the battery plume to the connector on the board (it should click with a slight click).
4. Set back the metal plate and twist the screws.

Step 5. Get your phone together.

1. Connect the display plume and check if the phone is turning on (don’t install the cover right away!).
2. If everything works, stick the back cover (you can use double-sided tape or glue). B-7000).
3. Tighten the screws of the cover and let the phone lie down 1-2 hour before first switching on.

✅ Buying an original or tested battery

✅ Prepared tools (scapula, screwdriver, hair dryer)

✅ I made a backup copy of the data (in case of resetting)

✅ Charged the old battery to 30-50% (safe)

✅ I work on a clean, well-lit surface.-->

⚠️ Warning: If the phone doesn't turn on after the replacement, check: Is the battery plume connected to the end (sometimes it doesn't reach 1 mm), is the insulation on the new battery damaged (may cause short circuits), is the polarity confused (+ If the problem persists, contact the service center, if the charge may be damaged.

How to properly "swing" a new battery

After a battery change, many users find that the phone is showing an incorrect percentage of charge or is quickly discharged, which is due to the fact that the battery controller needs to be calibrated.

1. Full discharge. → Charging: discharge the phone before automatically turning off, then charge to 100% without interruption (use the original Xiaomi adapter) 5V/2A).
2. Calibration cycle: Repeat the process 2-3 This will help the controller determine the capacity accurately.
3. Battery reset: In the engineering menu (type ##4636###) select Battery information and click Reset.

⚠️ Note: Do not use "fast charging" in the first 5 It reduces the life of the new battery. Charge the phone with a standard adapter (5V/1A or 5V/2A).

Also avoid:

• 🔥 Overheating (do not leave your phone in the sun or near heat sources).
• ❄️ Deep discharge (try not to drop the charge below 10%).
• 🔌 Use of cheap chargers (they can damage the controller).

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Calibration of the battery takes 2-3 After that, the phone will show the real percentage of charge and last longer.

Frequent Replacement Mistakes and How to Avoid Them

Even experienced users sometimes make mistakes that lead to a phone breakage or a new battery wear out quickly. TOP-5 Mistakes and how to prevent them:

1. Metal tools: If you put a knife or screwdriver on the lid, you can damage the plumes or the body. Use only plastic blades!
2. Dryer overheating: If you blow hot air directly onto the battery, it can swell. Just heat the edges of the lid!
3. Installation of the battery without duct tape: without fixing the battery will dangle, which can lead to a break in the plume.Always use double-sided tape or original tape.
4. Ignoring the new battery check: check the voltage with a multimeter before installation (should be 3.7-3.85 B. If the voltage is lower 3.5 B - battery defective.
5. Charging the phone immediately after assembly: let the phone "rest" 1-2 After a few hours, the stains are removed, and then you will be able to reset the stains.

If you're in doubt, you should go to a service center, the average cost of replacing the battery in the workshop — 1000-1500 ₽ (It's not expensive, but you get a job guarantee.

Where to buy a battery for Xiaomi Redmi 4 Pro: verified sellers

Choosing a place to buy is as important as choosing the battery itself, and here’s where we recommend buying batteries for the Redmi 4 Pro:

Tips for choosing a seller on AliExpress:

• 🌟 Look for stores with a rating of at least 98% and the number of orders >1000.
• 📸 Check the reviews photos – they should be visible Xiaomi logo on the battery.
• 💬 Write a message to the seller: "Is this battery original Xiaomi for Redmi 4 Pro (markw)? Show me photo of the back side.

Examples of verified sellers (at the time of 2026):

• Xiaomi Mall Official Store is the official store, but prices are high.
• DBS Battery Store – specializes in batteries, many positive reviews.
• HY Electronic Store - sells original and high-quality analogues.

FAQ: Answers to Frequent Questions