Xiaomi Mi Max 2
Mi Max 2
Replacing the battery on your own with the Xiaomi Mi Max 2 is a medium-sized task that requires accuracy, the right tools and an understanding of the process. In this article, we will learn how to choose a quality battery, what tools you will need, and guide you through each step of disassembling and assembling the device, pay special attention to the typical errors that can lead to damage to the phone, and give tips on how to avoid them.
If you've never taken a smartphone apart before, don't worry: with proper training, even a beginner can do the job. The key is to take your time and follow the instructions Step-by-step.
Signs that Xiaomi Mi Max 2 battery needs replacement
How do you know if the battery is the problem, not the software or the charger?
- 🔋 Phone's running out of power. 2-3 hours with moderate use (social networks, instant messengers).
- 📉 The percentage of charge "jumps": for example, with 40% drops 15% or the phone is turned off when 20-30%.
- 🔌 Charging is extremely slow or interrupted (especially if the cable and power supply are serviceable).
- 🔥 The phone body is noticeably heated in the battery area (but not because of the load on the processor!).
- ⚡ The phone refuses to turn on without connecting to the charger, even if it showed 10-20% charge.
If at least 2-3 The list of items you know is likely to 90% The battery is a problem, and you should check the battery's status software before you replace it:
- Install the AccuBattery app from Google Play.
- Charge your phone to 100% and use it normally until discharged.
- Check the "Health" option in the app if it's lower. 70-75%, battery-change.
You can also enter ##4636## in the dialer, go to the Battery Information menu and compare the current capacity to the factory (5300 mAh for the Mi Max 2). If the difference is greater than 30%, a replacement is inevitable.
What battery to choose for Xiaomi Mi Max 2: original vs analogues
The quality of the battery is not only the life of the phone, but also the safety of the phone, and cheap fakes can swell, overheat, or even ignite, so you should be responsible about choosing a battery.
The original battery for Xiaomi Mi Max 2 is marked MBP040 But after 2019, Xiaomi stopped supplying the original batteries for this model, so only analogues remained on the market:
| Type of battery | Pluses | Cons | Price (2026) |
|---|---|---|---|
| Original (b/u) | Guaranteed quality, exact compliance with parameters | Hard to find, wear and tear (if taken from another phone) | 1500–2500 ₽ |
| Premium-class analogue (Baseus, Remax) | High quality, close to the original characteristics | The price is higher than budget counterparts | 1200–1800 ₽ |
| Budgetary analogue (unknown brands) | Low price, availability | Low quality risk, rapid degradation, possible problems with sleepiness | 500–900 ₽ |
We recommend choosing batteries from proven manufacturers such as Baseus, Remax or ZMI. Pay attention to:
- 📦 Packaging: must be sealed, with a hologram and protective stickers.
- 🔍 Marking: The battery must have a model on it (MBP040), Capacity (5300 mAh), voltage (3.85V).
- 🛡️ Protective circuit: high-quality analogues have a built-in controller that prevents overheating and overcharging.
⚠️ Warning: Don't buy batteries with a capacity above 5300mAh! This is either a hoax (real capacity below) or the battery is incompatible with the Mi Max 2 charging controller and can disable the motherboard.
Where to buy:
- 🛒 Xiaomi's official stores (if the original appears).
- 🌍 Online sites tested: AliExpress (stores with a rating above 98%), Wildberries, Ozone.
- 🔧 Service centers that sell parts (e.g. FixPrice Service, Connected Service).
💡
Check the seller's reviews before you buy! Often fakes masquerade as brands like Baseus. Look for photos of real customers with packaging and battery in a disassembled phone.
Tools for battery replacement Xiaomi Mi Max 2
You'll need a minimal set of tools to replace the battery. Don't try to do "at hand" - this can damage the plumes, the case or the battery itself.
Here is a complete list of what needs to be prepared:
- 🔧 Plastic blades (mediators) - for careful liding and disconnection of plumes.
- 🔨 Cross screwdriver (PH00 or PH0) — hull-rotor.
- 🔥 Dryer or thermo-air station - to soften the glue under the battery.
- 🧲 Magnetic mat or organizer – so as not to lose screws.
- 🩹 Scotch (paint or capton) - for fixing plumes.
- 🔋 New battery – tested and charged to 30-50%.
- 🧴 Isopropyl alcohol (90%+) — Cleaning contacts and removing glue residues.
- 🛠️ Suction (optional) – will help to raise the screen if the glue is too strong.
Also prepare the workplace:
- 🪑 Work at a table with good lighting.
- ⚡ Use an antistatic bracelet or periodically touch grounded metal objects to remove static electricity.
- 📱 Take photos of each stage of dismantling – this will help with the assembly.
⚠️ Warning: Don't use metal blades or knives to lid up! they can damage plumes or leave scratches on the case. Plastic mediators cost pennies but keep your phone whole.
Buy a quality battery (proven brand)|Prepare all tools (driver, shoulder blades, hair dryer)|Charge the new battery before 30-50%|Remove static charge from hands (touch metal)|Backup of data (in case of error)-->
Step-by-step: how to disassemble Xiaomi Mi Max 2
Disassembling the Xiaomi Mi Max 2 requires patience, as the body is glued together and the plumes are brittle. Follow the instructions carefully so as not to damage the phone.
Step 1 Turn off the phone and remove the tray SIM-map.
Before disassembling, be sure to turn off the device and take out the tray for SIM-card (use a paper clip or a special key) This will prevent the contacts from accidentally closing.
Step 2. Heat the back cover with a hair dryer.
The glue that glues the lid to it becomes elastic when it's heated. Turn the dryer on at medium power (temperature). ~60-70°C) and warm up the edges of the phone evenly during 2-3 Don't overheat! Plastic can deform.
Step 3. Put the lid on with a plastic spatula.
Start at the bottom edge (on the USB-Type C connector side). Carefully insert the mediator into the slot and slowly lead along the housing, separating the lid. If you feel resistance, warm up the place again with a hairdryer.
Step 4. Disconnect the battery plume.
Once you remove the lid, you'll see the battery glued to the body, and the first thing you do is unplug the plume, and you'll use a plastic blade to smack the black connector (which is next to the motherboard), and that will prevent short circuits from breaking down further.
Step 5. Remove the battery.
The battery is glued to the body with double-sided tape, put it on a plastic blade from any edge and slowly pull up. If the battery fails, warm it up with a hair dryer (no higher than 60).°C!) Don't use metal tools - they can puncture the battery!
Step 6. Clean the case of glue residue.
Remove residues of bilateral tape with isopropyl alcohol and a napkin. Do not use acetone or solvents - they can damage the plastic!
What to do if the battery is swelling?
Installation of a new battery and assembly of the phone
Now that the old battery is removed, you can start installing a new one, which is just as important as disassembly, because errors can lead to poor contact or even damage to the motherboard.
Step 1. Check the new battery.
Make sure the battery is free of external damage and the contacts are clean. If you have a protective film, remove it (MBP040, 5,300 mAh).
Step 2. Stick the new battery.
The battery usually comes with double-sided scotch, and if it's not available, buy thin scotch for batteries (e.g., a battery, 3M 9448A). Stick the battery around the edges slightly, and don't push too hard, it can warp the cells.
Step 3. Connect the battery plume.
Carefully connect the battery connector to the motherboard. Make sure it sits to the end - unpressed contact can cause overheating or unstable operation.
Step 4. Check the performance.
Before final assembly, connect your phone to charge (don't turn it on!) If the charging indicator appears on the screen, the battery is connected correctly. If not, check the contacts of the plume.
Step 5, get your phone together.
Place the back cover in place, starting at the top edge. Carefully press it around the perimeter to make the glue stick. SIM-card and turn on the phone.
⚠️ Attention: If the phone does not turn on or discharges quickly after assembly, check: Battery density (no gaps should be); Clean contacts (wipe them with alcohol if necessary); Correct connection of the plume (the connector should sit tight, without distortions).
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After you replace the battery, be sure to calibrate: fully charge the phone, then discharge until it automatically shuts down. 2-3 This will help the controller to correctly determine the capacity of the new battery.
Common Mistakes When Replacing a Battery and How to Avoid Them
Even experienced craftsmen sometimes make mistakes that lead to a phone breakdown, and here are the most common ones and ways to prevent them:
| Mistake. | Effects of consequences | How to avoid |
|---|---|---|
| Use of metal tools to slap the cover | Damage to plumes, scratches on the body, short circuit | Use only plastic blades |
| Dryer overheating | Bloating or ignition of the battery, deformation of the body | Heat no higher 60°C, keep the hair dryer at a distance 10-15 centimeter |
| Not disabling the battery plume before work | Short circuit, failure of the motherboard | First thing you do is disconnect the battery! |
| Strong pressure on new battery when installed | Cell deformation, shortened service life | Stick carefully, without excessive pressure |
| Use of poor quality glue | The battery will fall off when it falls or vibrates. | Use specialized scotch for batteries |
Another common problem is that the phone doesn't turn on after the battery is replaced, and the reasons may be:
- 🔌 Flawed connection of battery plume (check connector).
- 🔋 Defective battery (try connecting the old battery – if the phone runs, a new defective battery).
- 🔧 Damage to the motherboard (if during dismantling the plume or contacts were touched).
If the phone turns on, but discharges quickly, the following reasons are possible:
- 📉 Uncalibrated battery (execute) 2-3 full-cycle).
- 🔥 Software failure (reset settings to factory through Settings) → Additionally. → Recovery and discharge).
- 🕵️ Fake battery (check real capacity via AccuBattery).
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If the battery starts to overheat after you change, turn it off immediately!This may indicate a short circuit or a charging controller malfunction.
How much does it cost to replace the Xiaomi Mi Max 2 battery in the service?
If you're not confident, you can trust a replacement to a professional, and the cost depends on the region, the status of the service center, and the type of battery.
Here are the average prices for 2026:
- 🏙️ Moscow, St. Petersburg: 1500–2500 ₽ (battery-based).
- 🌆 Regional centers (millions): 1200–2000 ₽.
- 🏘️ Small towns: 800–1500 ₽.
The price usually includes:
- 🔧 Work of the master.
- 🔋 Battery (most often put analogues of average quality).
- 🛡️ Guarantee for work (from 1 to 3 months).
Advantages of using the service:
- ✅ Work guarantee and spare parts.
- ✅ Quickness (usually) 1-2 hour).
- ✅ Diagnostics of other possible problems (for example, wear of the charging connector).
Disadvantages:
- ❌ The cost is higher than with a self-replacement.
- ❌ The risk of running into an unfair service (they can put a cheap analogue at the price of the original).
⚠️ Note: Before you give the phone to the service, check: What battery will be put (ask to show the package), give a guarantee for work and battery (should be at least 1 month), how long it will take repairs (some services may "stretch" simple work).