Replacement of the battery on Xiaomi Mi5 with your own hands: detailed instructions with photos and tips

The Xiaomi Mi5, released in 2016, is still a popular smartphone due to its performance and compact size, but after 5-7 years of operation, even the best battery loses up to 50% of its capacity: the phone discharges in a few hours, turns off at 20-30% charge or requires constant recharging. If you encounter these problems, replacing the battery is the only solution.

In this article, you will find step-by-step instructions for replacing the battery with the Xiaomi Mi5 with your own hands, including choosing a compatible battery, the necessary tools, disassembling the case and calibrating the new battery. We will also explain how to avoid errors that lead to damage to the plumes or failure of the fingerprint sensor. If you have never taken your smartphones apart, do not worry: with the right approach, the procedure will take less than an hour.

Before you start, evaluate your strength: repair requires care and patience. If you are not sure of your skills, you should contact the service center.

Signs that Xiaomi Mi5 battery needs replacement

How do you know if the battery is the problem, not the software failure or the charger? Here are the key symptoms of a worn-out battery:

• 🔋 Phone's running out of power. 2-3 hours with moderate use (social networks, instant messengers).
• ⚡ Charging jumps: for example, with 50% drops 15%, or the phone is turned off when 20-30% charge.
• 🔥 The body heats up more than usual during charging or playing.
• 🛑 The smartphone does not turn on without connecting to the charger, even if it shows 10-20% charge.
• ⏳ The Autonomous Work Time has been reduced in 2-3 compared to the new phone.

If you know at least 2-3 items from the list, the probability of battery wear is 90%, you can check the status of the battery using applications like AccuBattery (showing real capacity) or through the engineering menu:

1. Open the Phone app.
2. Enter the combination ##4636##.
3. Go to the Battery Information section and compare the current capacity to the factory capacity (3000 mAh for Mi5).

If the actual capacity is less than 2000 mAh, it is time to change the battery. Note: sometimes problems with fast discharge cause background applications or viruses. Before replacing the battery, reset to factory settings (in the Settings menu → Additional → Recovery and Reset) and check the autonomy again.

What battery to choose for Xiaomi Mi5: original vs analogues

The choice of battery not only affects battery life, but also the safety of your smartphone. Cheap, uncertified batteries can swell, overheat or damage the power controller.

We recommend choosing batteries from trusted manufacturers: ATL (Chinese supplier for Xiaomi), Samsung SDI or Desay.

• 🔋 Capacity: must be at least 2900-3,000 mAh (original - 3000 mAh).
• 🔌 Voltage: 3.8–4.4V (standard).
• 📏 Sizes: 68.5 × 68.5 × 3.85 mm (check before buying!).
• 🔄 Number of cycles: at least 500 for quality analogues.

Where to buy? There are reliable options.

• 🛒 Official stores: Xiaomi Russia (if available).
• 🌍 Guaranteeed sites: AliExpress (sellers with a rating of 98%+), Take, Ozon.
• 🔧 Parts shops: 4PDA, GSM Server.

⚠️ Attention! Check the seller's reviews before you buy. Counterfeit products are often sold under the guise of originals - pay attention to the packaging (should be QR-code, hologram) and certificates.

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If you buy a battery on AliExpress, choose options marked "100% Compatible with Xiaomi Mi5" and check the photos of the real product in reviews.

Preparing for replacement: security tools and measures

To replace the battery with Xiaomi Mi5, you will need:

Special blade for disassembling smartphones (plastic or metal)|Screwdriver cross (PH00 or PH0)|Thin-ended tweezers|Hair dryer or thermo-air station (for softening glue)|Screen suction cup|New battery|Double-sided tape or glue B-7000 (battery-lock)|Alcohol wipes (for cleaning contacts)-->

Also prepare the workplace:

• 🪑 Work at a table with good lighting.
• 🧲 Remove metal objects (they can damage plumes).
• 📱 Turn off the phone and remove it. SIM-map + memory card (if any).
• 🔌 Discharge the battery before 20-30% — This will reduce the risk of fire if damaged.

Important! Xiaomi Mi5 has adhesive body, so to remove the back cover it needs to be heated. Use a dryer at minimum power (or a thermal air station at 60-80 ° C), so as not to damage the display. Do not use open fire or too hot air!

If you don't have experience with disassembling smartphones, practice on an old phone or watch video instructions. For example, on YouTube there are detailed videos from RepairWorld or ET Phone Home channels.

⚠️ Attention! In the dismantling of Xiaomi Mi5 It is easy to damage the fingerprint scanner plume (under the battery) If the sensor stops working after the battery is replaced, the plume will need to be replaced (cost). ~1500 ₽).

Step-by-step: how to disassemble Xiaomi Mi5 and replace the battery

Now, let's get to the process. Follow the instructions carefully, every step is important.

Step 1: Removing the back cover

1. Heat the back cover of the phone around the perimeter for 2-3 minutes. Keep the hair dryer at a distance of 5-7 cm, so as not to overheat the case.

2. Place the suction cup to the bottom of the phone (near the Type-C connector) and pull up. If the lid doesn't lend itself, gently tuck it in with a plastic spatula.

3. Once a gap appears, swipe the entire perimeter, separating the lid from the body. Be careful - there may be latches inside!

Step 2: Shutting off the battery

1. Once you remove the lid, you'll see the battery covered with a black film, and there's a power connector underneath.

2. Gently tuck the film and disconnect the battery plume with a plastic blade. Don't use metal tools! This can cause short circuit.

3. Check the voltage on the contacts with a multimeter (should be 3.7-4.2V).If the voltage is absent, the battery is completely discharged or defective.

Step 3: Remove the old battery

1. The battery in the Xiaomi Mi5 is glued to the body. Push it with a spatula on the side and slowly pull up. If the battery fails, heat it with a hair dryer (no more than 60 ° C!).

2 Be careful: under the battery are the plumes of the fingerprint scanner and vibration motor.

3. Once removed, clean the case of glue residues with an alcohol napkin. Do not use acetone or solvents - they can damage the plastic.

Step 4: Installation of a new battery

1. Check the new battery for defects (blown, contact damage).

2. glue bilateral tape to the back of the battery (or apply a thin layer of B-7000 glue).

3. Carefully set the battery in place, matching the contacts with the connector on the board. Press it for 10-15 seconds for reliable fixation.

4. Connect the power plume to the motherboard. Make sure the contacts match!

Step 5: Assembly of the phone

1. Check that all plumes (fingerprint scanner, camera, speaker) are connected correctly.

2. Place the back cover in place and press it gently around the perimeter. If the cover is not fixed, heat it with a hair dryer and try again.

3. Turn on the phone and check the battery power. If the smartphone does not turn on, check the connection of the battery plume.

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After replacing the battery, be sure to calibrate (described in the next section) this will prolong the life of the new battery and improve the accuracy of the charge display.

Calibration of a new battery: why it is important and how to do it

Replacing the battery is only half the battle, and in order for the new battery to work properly, it needs to be calibrated, which synchronizes the power controller with the actual battery capacity and prevents the charge from spikes.

The calibration consists of 3 full charge/discharge cycles:

1. Charge your phone to 100% and keep charging for another 1-2 hours.
2. Turn off the charger and use the phone until it automatically turns off (don’t turn it off manually!).
3. Repeat the process 2-3 times.

You can also use the engineering menu to reset the battery data:

1. Enter the code ##4636##.
2. Go to Battery Information.
3. Click Reset Battery Statistics (if there is one).

After calibration, the phone will be more accurate in displaying the charge level and the battery will last longer. If the battery runs out too quickly after replacement, check:

• 🔌 Charger quality (use the original Xiaomi adapter on the 18W).
• 📱 Background apps (turn off autostart in settings).
• 🔄 Correct connection of the battery plume.

⚠️ If after calibration the phone turns off when 30-40% If you have a new battery, it may be defective or it's not connected properly.

Common Mistakes When Replacing a Battery and How to Avoid Them

Even experienced craftsmen sometimes make mistakes that cause their phones to break down, and here are the most common problems and ways to prevent them:

If you have problems after replacing the battery, check:

• 🔌 Connecting plumes: disconnect and reconnect the battery plume, fingerprint scanner, dynamics.
• 📱 Software glitches: make a reset settings (Settings) → Additionally. → Recovery and discharge).
• 🔋 Battery quality: If the phone doesn't turn on, check the voltage on the contacts with a multimeter (should be 3.7–4.2V).

If the battery is replaced, the phone can no longer see SIM-card, check the tray - sometimes when disassembling it shifts and contacts do not come into contact with the board.

Frequently Asked Questions (FAQ)