Xiaomi Mi5 is the legendary flagship of 2016, which is still used by many users, but over time, even the best battery loses capacity: the phone starts to run out in a few hours, turns off at 20-30% charge or completely stops holding charge. If you are faced with these problems, it is time to think about replacing the battery.
In this article, you will find step-by-step instructions for replacing the battery with the Mi5 (including the Mi5 Pro and Mi5s versions with similar design), a list of tools you need, tips for choosing a quality battery and answers to frequent questions. We will also tell you how to check battery wear before replacing and avoid the typical errors that can cause a smartphone to fail.
Note that the procedure requires care and basic electronics skills. If you've never disassembled a smartphone, you'd better go to a service center. But if you're willing to try, follow our guidelines and your Mi5 will work like new again!
How to know if the Xiaomi Mi5 battery is time to change?
Before you start screwdriver, make sure that the problem is the battery. Here are the key signs of battery wear:
- 🔋 Phone's running out of power. 2-3 hours with moderate use (social networks, messengers).
- 📉 The percentage of charge “jumps” (for example, from 40% immediately drops to 15%).
- ⚡ The smartphone is turned off when 20-30% although it had previously been used before 0%.
- 🔥 The body heats up more than usual during charging.
- 🐢 Charging is extremely slow or interrupted.
- 📊 In battery settings (Settings) → Battery) shows capacity less than 70% of the original.
If you know at least 2-3 items from the list, the battery definitely needs to be replaced. For accurate diagnosis, you can use applications like AccuBattery (Android) or CPU-Z to show the real state of the battery, including the number of charging cycles and current capacity.
Important: Lithium Polymer (Li-Po) batteries in the Xiaomi Mi5 are designed for 300-500 charge cycles. After that, the capacity drops by 20-30% and the battery starts to degrade. If your phone has been in use for more than 3 years, it's probably time to replace.
What battery to choose for Xiaomi Mi5?
The original battery for the Mi5 is BM43 and has a capacity of 3000 mAh. However, the market is full of fakes and low-quality analogues.
| Criteria | Recommendations | What to avoid |
|---|---|---|
| Capacity | 3000-3200 mAh (original or certified analogues) | Batteries with a capacity >3500 mAh – often fake with understated parameters |
| Manufacturer | Original Xiaomi, ATL, Samsung SDI, Lishen | No-name brands without certificates (e.g., "SuperPower") |
| Connector | Must be exactly the same as the original (24-pin connector) | Batteries with “universal” connectors – will not work |
| Price. | 1500–2500 ₽ (original) | Batteries cheaper than 1,000 ₽ — high-probability |
| Packaging | Hologram, QR-code, factory seal | Crumpled box, no markings, typos in the inscriptions |
Where to buy it?
- 🛒 Xiaomi official stores (if the originals are still available).
- 🌍 Checked online sites: AliExpress (shops with a rating of 98%+), Beru, Wildberries.
- 🔧 Service centers selling parts (ask for a warranty).
⚠️ Warning: Fake batteries can not only fail quickly, but also swell or ignite when charged!
Preparing for replacement: tools and safety
To replace the battery with Xiaomi Mi5, you will need:
Screwdriver T4 (Torx) for screws of the body
Plastic mediator or blade for disengagement of the body
Screen suction cup (optional, but simplifies the process)
Tweezers to detach plumes
Thermoclee or bilateral tape to fix the new battery
Dryer or thermo-air station (for softening the glue)
Alcohol and wipes to clean contacts
Gloves and glasses (protection from shrapnel and dust)-->
Also prepare the workplace:
- 🪑 Clean table with good lighting.
- 📱 Soft substrate (such as a napkin) so as not to scratch the screen.
- 🔌 Charge the new battery before 30-50% before installation (unless it is sealed).
- 📸 Take a picture of the disassembly process – this will help to collect the phone back.
⚠️ Attention: Don't take it apart Mi5 when humidity is above 60% or in a dusty room, moisture or dirt on the board can cause corrosion or short circuit!
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Before disassembling, turn off the phone and remove it. SIM-If the battery is swelling, don't try to prick it, it can cause fire!
Step-by-step: how to change the battery on Xiaomi Mi5
Follow the instructions carefully. If you have any difficulties at any stage, stop disassembling and consult a specialist.
Step 1: Removing the back cover
1. Turn off the phone and put it down with the screen.
2. heat the hair dryer back cover around the perimeter (temperature ~60 ° C) for 1-2 minutes - this will soften the glue.
3. Insert the plastic mediator into the gap between the lid and the housing (start at the bottom edge where the charging connector is).
4. Carefully drive the mediator along the body, separating the lid. Be careful - there may be latches inside!
What to do if the lid does not lend itself?
Step 2: Disconnecting the plumes and batteries
1 Unscrew 10 Torx T4 screws fixing the metal plate above the battery.
2. Carefully remove the plate and put it aside (do not lose screws!).
3. Unplug the battery plume with tweezers. To do this, put the black connector up.
4. Check if the old battery is bloated. If so, don't deform it, take it out.
Step 3: Remove the old battery
1. Put the battery with a plastic blade on the side (where there are no plumes).
2 If the battery is glued, gently pull on the special "ears" (if any) or use a thread/plastic card to separate it from the body.
3. Recycle old battery according to your region’s rules (don’t throw it away in the trash!).
Step 4: Installation of a new battery
1. Check the contacts of the new battery – they should be clean (wipe with alcohol if necessary).
2. glue the new battery to double-sided scotch or heat-glue (do not use superglue!).
3. Connect the battery plume to the motherboard.
4.Make sure all contacts fit tightly.
Step 5: Assembly of the phone
1. Put the metal plate back in place and twist the Torx T4 screws.
2. Press the back cover and check if there are any gaps.
3. Turn on the phone and check the battery.
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After replacing the battery, be sure to calibrate: completely discharge the phone, then charge to 100% without interruption, which will help the controller correctly determine the capacity of the new battery.
Frequent Mistakes and How to Avoid Them
Even experienced users sometimes make mistakes when replacing the battery.
- 🔧 Shooting screws - use a high-quality Torx screwdriver T4 And don't put too much effort into it.
- 🔥 Damage to plumes - do not pull the wires, but carefully lift the connectors with tweezers.
- 💥 Short circuit – do not touch the contacts on the board with metal tools.
- 📉 Wrong calibration -- after you replace the battery, the phone may have the wrong percentage of charge. 2-3 full-cycle.
- 🔋 Use of incompatible battery – even if the connector is suitable, the capacity or voltage may differ, which will lead to rapid wear and tear.
If the phone is not switched on after replacement:
- Check if the battery is tightly connected.
- Make sure your contacts are not contaminated (wipe with alcohol).
- Connect the charger - it is possible that the new battery is discharged.
- If nothing helps, contact the service - there may be damage to the fee.
How much does it cost to replace the Xiaomi Mi5 battery in the service?
If you're not confident, you should trust the replacement to the professionals. Here's the 2026 price tag:
| Type of service | Cost (₽) | Time limit for implementation |
|---|---|---|
| Replacement with original battery (if available) | 2500–3500 | 1-2 hours |
| Replacement with a qualitative analogue (ATL/Samsung) | 1800–2500 | 1 hour |
| Replacement + Diagnostics of the fee (if the phone is not turned on) | 3000–5000 | 1-3 days |
| Express replacement (without recording) | 2000–3000 | 30-60 minutes |
Costs can vary by region and level of service center: small workshops usually have lower prices, but higher risk of running into poor-quality battery. Official Xiaomi services (if they still serve Mi5) guarantee original parts, but also higher cost.
Advice: Before contacting the service, specify:
- 🔍 What battery are they installing (ask for a certificate).
- ⏱ Work and spare part warranty period (optimum 6 months).
- 📋 Whether the check and the act of work performed.