Replacement of the battery on Xiaomi Mi5: step-by-step guide with photos and videos

Why to change the battery on Xiaomi Mi5 and when you need it

The Xiaomi Mi5, launched in 2016, is still popular with users due to its balanced performance and reliable build. However, even the best-quality device eventually faces battery degradation, a natural process in which battery capacity decreases by 20-30% after 2-3 years of active use. If your Mi5 starts to run out in a few hours, shut down at 20-30% charge or overheat during charging, it’s probably time to think about replacing the power source.

The manufacturer claims a battery life of 500-800 charging cycles, but in practice this figure depends on many factors: the intensity of use, temperature, quality of chargers. For example, regular use of Quick Charge 3.0 fast charging or operation of a smartphone at temperatures below 0 ° C or above 35 ° C accelerates the wear of lithium polymer cells. In this article, we will discuss how to replace the battery on Xiaomi Mi5 without contacting the service center, and also help you choose a quality battery and avoid typical errors.

Signs of battery wear: when it's time to act

It's not always obvious that the battery is the problem, and sometimes the same symptoms are caused by a firmware failure, a charging connector failure, or a power controller failure. To diagnose a malfunction, look for the following:

• 🔋 Smartphone discharges by 50% or more in 2-3 hours in standby mode (without active use).
• 🔥 The body is noticeably heated in the battery area even with minimal load.
• 📉 The percentage of charge “jumps”: for example, from 40% immediately drops to 15% or the device turns off at 20% of the remainder.
• ⚡ Charging is extremely slow or interrupted (especially if the cable and power supply are serviceable).
• 💥 Bloating of the back cover is a critical sign that requires immediate replacement!

For accurate diagnostics, you can use apps like AccuBattery (available on Google Play) to show the actual battery capacity and wear and tear, if Battery Health is below 70%, replacement is inevitable, and it's also helpful to check Settings → Battery → Usage, which displays discharge schedules and application activity.

⚠️ Warning: If the battery is swelling, do not try to prick it or continue using the smartphone - this may cause a fire or explosion! Immediately remove the battery (if possible) and dispose of it at special reception points.

The choice of battery for Xiaomi Mi5: original vs analogues

The original battery for Xiaomi Mi5 is marked BM47 and nominal capacity of 3000 mAh. However, after 2018, the company stopped supplying spare parts for this model, so the market is dominated by analogues from third-party manufacturers. The main thing is not to run into a low-quality fake that can damage the smartphone or even cause a fire.

When choosing a battery, pay attention to the following parameters:

• 🔍 Marking and compatibility: The model must be specified BM47 Xiaomi Mi5. Avoid universal batteries without specifying the model.
• 📊 Capacity: Optimally - 3000-3200 mAh Batteries with overcapacity (for example, 4000 mAh) are often a scam.
• 🏭 Manufacturer: Reliable brands — ZOP Power, CAMELION, Baseus (Battery King line) Avoid no-name batteries without certificates.
• 🔋 Type of elements: Lithium polymer (Li-Po) only with protection against overheating and short circuit.

Before buying, check the reviews on the site (for example, AliExpress, Yandex Market or Beru) and pay attention to photos of real customers.

• Clear labeling with date of production (no older than 1-2 years).
• Factory packaging with a hologram or protective stickers.
• Contacts without traces of oxidation or damage.

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Before you buy, ask the seller to provide a video of the multimeter battery test, which will help to avoid counterfeiting with understated capacity.

Preparing for replacement: security tools and measures

Replacing the battery with the Xiaomi Mi5 requires neatness and minimal electronics skills. If you’ve never disassembled a smartphone, practice on an old device or watch a video manual (see the end of the article).

Plastic blades (mediators) for opening the body|The screwdriver. PH00|Screen suction cup|Thin-ended tweezers|Isopropyl alcohol (90%+) clean-up|Thermoclee or bilateral tape to fix the new battery|Fryer (for softening glue)|Antistatic bracelet (optional)-->

Also prepare the workplace:

• 🪑 Work at a table with good lighting.
• 🧹 Remove all small items that can get inside the smartphone.
• ⚡ Turn off the power and remove SIM-card with memory card (if any).
• 📱 Discharge the battery to 20-30% – this minimizes the risk of short circuit.

⚠️ Warning: Do not use metal tools to tamper with the body - this can damage antenna lines or the screen. If the glue is too strong, warm the edges of the body with a hairdryer (temperature not higher than 60).°C), but do not direct the airflow to the screen or battery!

If you are afraid of damaging the plumes, pre-order spare display plumes and switch buttons (they often break when you open the plumes neatly). ₽ piecewise.

Step-by-step instructions for replacing the battery

Now, to the process itself, follow the steps to avoid damage, and if you have any problems at any point, see the video or photo below.

Step 1 Remove the back cover

The Xiaomi Mi5 body is glued around the perimeter, so you will need to tamper it carefully. Start at the bottom edge (near the USB-Type C connector):

1. Apply the suction cup to the center of the lower part of the body and slightly pull up.
2. Insert a plastic shoulder blade into the resulting gap and slowly lead it along the edge, separating the glue.
3. Repeat the procedure on all sides until the lid is completely removed.

Step 2. Turn off the plumes.

When you remove the lid, you'll see the battery covered by a metal plate, and before you unscrew it, unplug the battery plume from the motherboard.

1. Carefully tuck the black connector (it is next to the camera) with a plastic spatula.
2. Turn off the display plume (it is wide and located at the top of the board).
3. Unscrew 6 screws that attach the metal plate over the battery (use the PH00 screwdriver).

Step 3: Remove the old battery

The battery in the Mi5 is glued to the body with double-sided tape to remove it.

1. Put the battery on the side with a plastic blade (where there are no plumes).
2. If the glue is too strong, warm the body with a hairdryer (maximum 60°C) or use isopropyl alcohol to dissolve the glue.
3. Carefully pull the battery up without bending it – lithium polymer cells do not like mechanical deformations!

Step 4: Installation of a new battery

Before installing the new battery:

1. Clean the contacts on the motherboard and inside the case of dust and glue residues (use alcohol and cotton swab).
2. Remove the protective film from the contacts of the new battery.
3. Stick the battery onto a bilateral tape or apply heat glue around the perimeter.
4. Connect the battery plume to the connector on the board (it should click with a slight click).

Step 5: Build a smartphone

Collect the device in reverse order:

1. Set a metal plate in place and twist the screws.
2. Connect the display plume and check that it sits tightly in the connector.
3. Stick the back cover. You can use the B-7000 or some other electronics glue for reliability.
4. Fix the lid with rods or heavy books for 10-15 minutes until the glue is grasped.

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After replacing the battery, be sure to calibrate: fully discharge the smartphone before turning off, 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 replace it carefully, you can make mistakes that will cause the device to fail, and here are the most common ones and ways to prevent them:

• 🔌 Display plume damage: Often occurs when the body is unscrupulously opened. To avoid this, use thin plastic blades and do not apply force to the center of the screen.
• 🔥 Short circuit: Occurs if you accidentally close the contacts of the battery with a metal tool. Always turn off the battery plume first and connect the last one!
• 📶 Network signal loss: If the mobile internet is lost after assembly, check to see if you have damaged the antenna lines (thin golden tracks at the edges of the case) and can be repaired with conductive glue.
• 🔋 Fast discharge of new battery: You probably bought a fake with an understated capacity. Check the real capacity with AccuBattery.

If the smartphone does not turn on after replacement:

1. Check if the battery plume sits tightly in the connector.
2. Make sure the contacts are not oxidized (clean them with alcohol if necessary).
3. Connect the charger – sometimes after replacement, the battery is discharged to zero and requires initial charging.
4. If nothing works, the motherboard may have been damaged, in which case, contact the service.

⚠️ Warning: If the battery swells or overheats after replacing, immediately turn off the smartphone and remove it - this is a sign of defective or incompatible with the power controller!

What to do after replacement: Calibration and care

Successful battery replacement is only half the battle, so to make sure that the new battery lasts as long as possible, follow these guidelines:

• 🔄 Calibration: Perform 2-3 full discharge/charging cycles (0% to 100%) for precise controller operation.
• 🔌 Charging: Use an original or certified Quick Charge 3.0 charger. Avoid cheap cables without protection.
• 🌡️ Temperature: Do not leave your smartphone in the sun or in a cold room (optimum 10–30).°C).
• 📵 Storage: If you don’t use your phone for long, keep it with a charge of 40-60% in the off state.

It is also useful to disable unnecessary background processes and optimize battery consumption:

1. Go to Settings → Battery → Optimize and disable auto-run of unnecessary applications.
2. Activate the Savings mode at a low battery level.
3. Turn off Wi-Fi, Bluetooth, and GPS when not in use.

The average life of a new battery when properly operated is 2-3 years. If after a year the capacity has started to fall again, check the smartphone for software errors or damage to the power controller.

Video instructions and additional materials

For clarity, we recommend watching the video with a step-by-step battery replacement on Xiaomi Mi5:

Video 1: Replacement of the Xiaomi Mi5 battery (Russian) - detailed analysis with comments.

Video 2: Xiaomi Mi5 Battery Replacement (English) – Instructions with a focus on safety.

If you prefer text guides, download PDF-Photo instruction (size: 2.4 MB) provides high-quality images of each stage of disassembly.

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Before starting work, watch the video at a reduced speed (0.75x) to avoid missing important details.

FAQ: Frequent questions about Xiaomi Mi5 battery replacement