How to replace the battery on Xiaomi Redmi 6 Pro: detailed instructions with a photo

Why Xiaomi Redmi 6 Pro Battery Fails and When to Change It

Xiaomi Redmi 6 Pro, released in 2018, is equipped with a non-removable battery capacity of 4000 mAh. Despite the stated resource of 500-800 charging cycles, after 2-3 years of active use, the battery begins to degrade. The first signs of wear: the phone discharges in a few hours, turns off at 20-30% charge or overheats during charging.

The causes of accelerated wear can be:

• 🔌 Constantly charging "all night" or using non-original adapters.
• 🌡️ Operation at extreme temperatures (below 0)°C or higher than 40°C).
• 🔄 Frequent deep discharges (up to 0%) and fast charging.
• 📱 Mechanical damage after falls or moisture.

If you see a "Replace battery" status in the settings (Settings → Battery → Battery Status) or a capacity drop below 70% of its nominal capacity, it's time to act. Replacing the battery will cost less than buying a new smartphone, and bring the Redmi 6 Pro back to life for another 2-3 years.

What battery to choose for Redmi 6 Pro: original vs analogues

The original Xiaomi battery for the Redmi 6 Pro has an MB-J10 article and a capacity of 4000 mAh. It can be bought from official distributors (for example, in the Mi Store or on AliExpress from trusted sellers). The average price is 1500-2500 rubles. However, the original batteries are often counterfeited, so pay attention to:

• 🏷️ Presence of hologram and serial number on the package.
• 🔋 Marking on the battery itself (model and capacity should match).
• 📦 Package (the box must have the battery itself) + shield-film).

Alternatives are batteries from third-party manufacturers such as Baseus, Remax or Patrona, which are cheaper (800-1500 rubles), but the quality varies.

Critical: the battery must be protected against overcharging and short circuiting. Cheap batteries without a controller can lead to fire! Before buying, read reviews and check certificates (for example, CE or RoHS).

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Before you buy, ask the seller to send you a photo of the battery with the label, compare it to the original photo on the Internet, this will help to avoid counterfeiting.

Preparing for replacement: security tools and measures

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

Turn off the phone and remove it. SIM-memory-card

Charge the battery to 30-50% (this is safer than 0% or 100%)

Prepare the workplace: clean desk, good lighting, antistatic mat (if possible)

Wear an antistatic bracelet or touch a grounded object periodically

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Tools:

• 🔧 Screwdriver kit: cross-haired (PH00) and flat (1.5 mm) for the screws of the rear cover.
• 📱 Plastic mediators or blades for disengaging the body.
• 🔥 Hair dryer or thermo-air station (for softening glue).
• 🧲 Screen suction cup (optional, but simplifies the process).
• 🧴 Isopropyl alcohol (90%+) clean-up.
• 🩹 Clay. B-7000 or double-sided tape to fix a new battery.

⚠️ Warning: Do not use metal tools to tamper with the battery, which can break through the battery body and cause it to short. If the battery is swelling, do not try to puncture or bend it!

If you’ve never taken a smartphone apart, watch video instructions on YouTube (like from Fixez or Repair Universe channels) to avoid common mistakes like damaging plumes or tearing off contact areas.

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

The Redmi 6 Pro is designed to be clean, because the body is glued together and the plumes are fragile.

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

1. Heat the edge of the back panel with a hair dryer (60-80°C) for 2-3 minutes. This will soften the glue.
2. Insert a plastic mediator into the gap between the lid and the case (start at the bottom edge where the charging connector is).
3. Carefully drive the mediator around the perimeter, separating the lid. Do not force - if the lid does not respond, warm up again.

Step 2. Disconnect the battery plume.

• 🔌 Unscrew 4 screws, fixing the metal plate over the battery plume.
• 📱 Carefully tuck the plume with a plastic spatula and disconnect it from the motherboard.

⚠️ Warning: If the phone hasn't turned off before disassembly, when the battery plume is disconnected, it can suddenly turn on. It's dangerous! Always check that the device is off.

Step 3. Remove the old battery.

• 🔥 Warm the battery with a hair dryer (not higher than 60)°C!) for softening the glue.
• 🪛 Pick up the battery with a plastic spatula on the side and slowly pull up.If the glue is too strong, use a thread or special battery suction cup.
• 🧹 Remove the residues of glue from the body with alcohol or acetone.

At this stage, inspect the motherboard for damage. If there are signs of oxidation or bloated capacitors, additional repairs may be needed.

Installation of a new battery and assembly of the phone

Before installing a new battery, check its voltage with a multimeter - it should be in the range of 3.7-4.2 V. If the voltage is below 3.5 V, the battery must be charged with an external device (for example, iMax B6).

Step 1. Install a new battery.

• 📏 Check that the new battery matches the size and location of the contacts.
• 🧴 Apply a thin layer of glue B-7000 on the body or use double-sided scotch.
• 🔋 Carefully press the battery, avoiding distortion.

Step 2. Connect the plume and assemble the phone.

1. Connect the battery plume to the motherboard (a slight click should be heard).
2. Turn the metal plate screws (do not pull!).
3. Install the back cover, starting at the top edge. Warm up the edge hair dryer for better glue fixation.
4. Turn the back panel screws (there should be 12 of them).

Step 3. Check the performance.

• 🔌 Connect the charger. The phone should start charging.
• 📊 Turn on your phone and check the charge level in Settings → Battery.
• 🔥 Make sure the battery doesn’t warm above 40.°C (can be checked by the annex) AIDA64).

1. Correct connection of the battery plume.

2. the presence of voltage on the contacts of the battery (multimeter).

Integrity of the fuse on the motherboard (may burn with KZ).-->

Frequent Mistakes and How to Avoid Them

Even experienced tycoons sometimes make mistakes when replacing a battery, and here are the most common ones and ways to prevent them:

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

• 📱 Uncalibrated battery (you need 2-3 times to completely discharge and charge the phone).
• 🔌 Background processes (check in Settings) → Battery → Use of the).
• 🛠️ Damage to the power controller on the motherboard.

If the phone gets worse when it's replaced, try resetting to factory settings (Settings → Additional → Recovery and Reset) which sometimes helps to "reset" system errors.

How much does it cost to replace a battery in a service center?

If you are not sure of your abilities, it is better to contact the service center.The cost of replacing the battery with the Xiaomi Redmi 6 Pro in 2026:

Xiaomi's official services use original parts and give a warranty, but the price is higher. Unofficial workshops may offer cheaper counterparts, but the risk of running into a poor battery is higher.

• 📋 Check the reviews about the workshop on Yandex.Maps or 2GIS.
• 💬 Find out which battery will be installed (original or analogue).
• 📸 Asking to keep your old battery – this will help you avoid fraud.

If you're trying to change your battery yourself, but you're afraid of damaging your phone, some services offer a "I brought it myself," and you buy a part, and the handyman provides tools and advice, and the cost of this service is 300-500 rubles.

FAQ: Answers to Frequent Questions