Replacement of the battery on Xiaomi Redmi 6 Pro: a detailed guide with photos and nuances

When and Why to Change the Battery on the Redmi 6 Pro

The Xiaomi Redmi 6 Pro, released in 2018, is still a popular budget smartphone due to its balanced performance and reliable build. However, even when used carefully after 3-4 years, the original 4,000 mAh battery begins to lose up to 30-40% of its original capacity. If your phone runs out in a few hours, turns off at 20-30% charge or overheats during charging, these are sure signs that the battery needs to be replaced.

Replacing a battery on a Redmi 6 Pro will cost 3-5 times less than a service center (where the cost of work often exceeds the cost of the battery itself). But it is important to understand that the procedure requires accuracy and basic electronics skills. In this article, we will take everything from choosing a new battery to building a phone, and also talk about the typical errors that can bring a smartphone down.

Before you start, answer two questions:

• 🔋 Is your battery swollen (phone body deformed)? If so, a replacement needs to be done urgently, as a bloated battery can damage the display or motherboard.
• 🛠️ Do you have experience disassembling equipment (at least a laptop or other smartphone)? If not, practice on an unnecessary device or watch video disassembly before you start.

What battery to choose for Xiaomi Redmi 6 Pro

The original battery for the Redmi 6 Pro is labeled BM47 or DM47 (depending on the batch) and has a capacity of 4000 mAh.

1. Xiaomi’s original batteries are the most reliable, but rarely available on the market, and can be found on AliExpress or in specialty stores (price). ~1500–2000 ₽).
2. Quality analogues from proven brands: Patona, Baseus, Remax. They often exceed the original in capacity (up to 4200 mAh) and are equipped with overheating protection. ₽.
3. Budget Chinese copies (without the brand) are a risky option, and these batteries may not match the declared capacity or swell in a few months. ₽.

When choosing, pay attention to:

• 🔍 Model Match: The battery should have the Redmi label on it. 6 pro BM47/DM47.
• 📦 Set: the set must be bilateral tape for fixation and insulation film.
• 🔋 Capacity: optimally - 4000-4200 mAh Batteries with declared 5000 mAh and above - fraud.
• 🛡️ Protection: availability of charge/discharge controller and thermal sensor.

⚠️ Don’t buy batteries that say For Redmi. 6/6A — They're not good for Redmi. 6 Pro because of different connectors and dimensions, and avoid batteries without manufacturer's labeling: they can be repackaged used cells.

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Before buying, check the reviews of the seller on the site. A good sign is if the comments have photos of the package and multimeter capacity tests.

Tools and workplace preparation required

To replace the battery with the Redmi 6 Pro, you will need:

Screwdriver cross (PH00 or PH0)

Plastic blades (mediators) - 2-3 pieces.

Screen suction cup (optional, but simplifies the task)

Thin-ended tweezers

Heat dryer or building hair dryer (power up to 300 ° C)

Isopropyl alcohol (90%+) and cotton swabs

Double-sided tape for battery fixation (usually included)

Multimeter (to check the voltage, optionally)

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Also prepare the workplace:

• 🪑 Work at a table with good lighting (better to use a desk lamp).
• 🧲 Remove all metal objects (they can close contacts on the board).
• 📱 Place your phone on a soft substrate (like a silicone mat) to avoid scratching the body.
• 🔌 Turn off the phone from charging and turn it off. SIM-card and memory card - they can interfere with the dismantling.

If you don't have any experience with electronics, we recommend that you videotape the process or take pictures of each step, which will help you put your phone back together.

⚠️ Warning: Don't use a knife or metal blades to separate the screen - it's almost guaranteed to damage the plumes.Plastic mediators are safer but require patience.

Step-by-step: how to disassemble Xiaomi Redmi 6 Pro

The Redmi 6 Pro is more difficult to disassemble than many modern smartphones, due to the battery's adhesive mounting and the screen's brittle plume.

Step 1: Removing the back cover

1. Heat the tail dryer edge of the back cover (temperature) ~60–70°C) for 1-2 minutes. This will soften the glue.

2. Insert a plastic blade into the gap between the lid and the body (start at the lower corner where the connectors are located). Carefully drive the blade around the perimeter, separating the lid.

3 If the lid doesn't respond, heat it up again. Don't force it, you can break the latches.

Step 2: Shutting off the battery

1. Once you remove the lid, you'll see the battery locked in black film. First of all, you'll disconnect the battery connector from the motherboard, and that will prevent short circuits. Use a plastic blade to plug the jack.

2. The battery connector on the Redmi 6 Pro is located at the top of the board (near the camera). It is black and has 4 contacts.

Step 3: Remove the old battery

1. The battery is glued to the body with double-sided tape, apply it with a plastic shovel from any angle and slowly pull up. If the battery does not respond, heat it with a hair dryer (no more than 50 ° C!).

2.Do not pierce the battery with metal objects - this can cause fire.

3. After removal, clean the body of glue residues with isopropyl alcohol.

Step 4: Installation of a new battery

1. Remove the protective film from the new battery and glue it to the old one using double-sided tape from the kit.

2 Connect the battery connector to the motherboard, make sure the contacts match and the connector snaps.

3. Check the voltage with a multimeter (should be ~3.7-4.2 V). If there is no voltage, recheck the connection.

Assembly of the phone and the first inclusion

After installing the new battery, it remains to assemble the phone in reverse order:

1. Put the plumes in their places (first on the screen, then the rest).
2. Hold the back cover, starting with the latches near the power and volume buttons, and press it evenly around the perimeter.
3. Turn on the phone and check:

• 🔋 Charging (plug the cable – the battery icon should appear).
• 📶 Communications (check work) SIM-maps and wifi).
• 🎵 Sound (speaker and microphone should work without interference).

If the phone is not switched on:

• 🔌 Check if the battery connector is tightly seated.
• 🔧 Check the connection of the screen plume (it could fall out during assembly).
• 🔋 Try charging your phone for 10-15 minutes – the new battery may be discharged.

⚠️ Warning: If the screen flashes after assembly or artifacts appear, this is a sign of damage to the plume.

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After you change the battery, calibrate it: completely discharge the phone, then charge to 100% without interruption. Repeat the procedure 2-3 times to accurately display the charge level.

Common Mistakes and How to Avoid Them

Even if you change the battery carefully, you can make mistakes that will cause your phone to break down, and here are the most common ones:

Another common problem is the rapid discharge of a new battery, which may be related to:

• 🔌 Low-quality battery (capacity below the declared).
• 📱 Software failures (e.g. background processes).
• 🔋 Incorrect calibration (see above tip).

If the phone is overheating after replacement, check:

• 🔥 Correct connection of the battery connector (there should be no backlash).
• 🛠️ No damage to the motherboard (blackened elements, bloated capacitors).

Frequently Asked Questions (FAQ)