Replacing the battery with Xiaomi Mi Max 2: detailed guide with photos and tips

Xiaomi Mi Max 2

Mi Max 2

Self-replacement of the battery on Xiaomi Mi Max 2 It's not that complicated at first glance. 30-40 In this article, we'll look at everything you need to know, from choosing a new battery to final assembly of your smartphone, and how to avoid the common mistakes that cause damage to plumes or motherboards.

⚠️ Important: Xiaomi Mi Max 2 has a glue battery soldered to the body. Replacing it requires caution - if you sloppy dismantle, you can break the plumes or damage the board. If you've never disassembled smartphones, you better contact the service center.

1.Signs of battery wear on Xiaomi Mi Max 2

How do you know that the Mi Max 2 battery really needs to be replaced, not the firmware or background apps?

• 🔋 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% after a reboot.
• ⚡ The smartphone is turned off when 20-30% charge and not activated without recharging.
• 🔥 The body is noticeably heated in the battery area even without loading.
• 🛑 The phone does not keep the charge off (discharges overnight).

If at least 2-3 The list of items on your Mi Max 2 — The battery is clearly worn out, and you can check its condition through an engineering menu or an application like AccuBattery (shows real capacity in mAh). 2 normal capacity of the new battery — 5300 If the application shows less 3500-4000 MACH, TIME TO CHANG.

⚠️ Warning: Sometimes rapid discharge causes background processes or viruses. Before replacing the battery, reset to factory settings (Settings) → Additionally. → Recover and reset) and check charge consumption in safe mode (press the power button → «Safe regime»).

2.What battery to choose for Xiaomi Mi Max 2?

Original batteries for Mi Max 2 (article) MBJ4024) They're not made anymore, but there are good analogues on the market, and the key is not to run into a fake that will last six months:

• 🔍 Capacity: at least 5,300 mAh (original) Some vendors offer "improved" versions of 6000 mAh - this is a hoax, the real capacity of such batteries rarely exceeds 4,500 mAh.
• 🏷️ Article: Must be the same as the original (MBJ4024) or be compatible (for example, BH45 from proven brands).
• 📦 Set: the set should be glue strips for fixation and heat pad (if it is not - buy separately).
• 💰 Price: quality battery costs from 1500 to 2500 rubles. Cheap options (up to 1000) ₽) — almost always forgery.

Best Analog Brands for Mi Max 2:

1. ZOP Power – Reliable batteries with 12 months warranty.
2. CAMELION — Proven manufacturer, often supplies batteries for service centers.
3. Remax - budget, but high-quality option (warranty 6 months).

💡 Tip: Check seller reviews before buying. On AliExpress, look for stores with a rating of at least 98% and orders from 1,000+. On Yandex Market or Ozon, pay attention to photos of real customers – they often post capacity tests.

3. Battery replacement tools

To replace the battery with Xiaomi Mi Max 2, you will need:

• 🔧 Screwdriver kit: cross-haired (PH00) and flat (1.5 mm) for the screws of the body.
• 🧲 Suction: to remove the screen (you can use a suction cup from the phone holder in the car).
• 📏 Plastic blades/mediators: 2-3 corps-disconnection.
• 🔥 Dryer or thermo-air station: for softening the glue (temperature) 60-80°C).
• 🧴 Isopropyl alcohol (90%+): glue-residue.
• 🔋 New battery: with glue strips complete.
• 🛡️ Protective gloves: Batteries contain lithium, which is dangerous if damaged.

⚠️ Warning: Don't use metal tools to tamper with the battery - it can be short-circuit! If you don't have plastic shoulder blades, you can do with guitar mediators or even a bank card (but carefully).

📌 Where do I buy the tools?

• Setting screwdrivers + shoulder blades: AliExpress (~300-500 ₽) or Chip and Deep (~800 ₽).
• Isopropyl alcohol: pharmacy or electronics store.
• Hair dryer: the usual household (hot air mode) is suitable.

Turn off the phone and remove it. SIM-map|Charge the phone before 30-50% (The battery is not “empty»)|Prepare the workplace (clean table, good lighting)|Remove the cover and protective glass (if any)|Read the instructions to the end before starting the work-->

4. Step-by-step instructions for replacing the battery

Now, to the process itself, follow the instructions in strict order to avoid damage.

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

1. Turn off the Mi Max 2 and get the tray out. SIM-map.
2. Heat the hair dryer back cover around the perimeter (1-2 It'll soften the glue.
3. Then, put the lid on the bottom of the suction (near the connector). USB-C).
4. Carefully tuck a plastic spatula and lead it along the body, separating the latches.

Step 2. Turn off the battery plume.

1. Under the lid you will see a black battery plume (it is glued to the motherboard).
2. Unscrew 4 screws fixing the metal plate over the plume (cross screwdriver) PH00).
3. Carefully dent the plume with a plastic spatula and disconnect it from the connector.

⚠️ Attention: Don't pull the plume up, it can come off! Pull it up only from the side, as if "rocking" the connector.

Step 3: Remove the old battery

1. Under the battery, you'll see black adhesive strips, tweezers and pulls, and that will separate the battery.
2. If the glue is too strong, warm up the battery again with a hairdryer (no higher than 80).°C!).
3. Carefully tuck the battery with a plastic spatula from any edge and slowly lift.
4. Do not apply force - if the battery does not respond, heat further.

Critically, if the battery is swelling (as seen from the bulge on the lid), don't prick it! It could cause fire, so you'd better call the service.

Step 4: Install a new battery

1. Remove the residues of the glue from the body (wipe with isopropyl alcohol).
2. Remove the protective film from the adhesive strips on the new battery.
3. Carefully set the battery in place, pressing the edges for fixation.
4. Connect the plume back (it should "click").
5. Twirl the metal plate and screws.

Step 5. Get your phone together.

1. Make sure all plumes are connected (especially touchscreen and speaker).
2. Press the back cover until the snaps of the latches.
3. Turn on the phone and check the charge (should show) 30-50%).

1. whether the battery plume is connected (sometimes it falls out during assembly).

2. Is the charging connector damaged (try another cable).

3. whether there is any debris or glue left under the battery (may cause short circuit).-->

5. Common Mistakes and How to Avoid Them

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

• 🔌 Battery plume damage. How to avoid: Disconnect the plume with a plastic blade only, don't pull the wires!
• 🔥 Overheating the battery with a hairdryer. How to avoid: Keep the hairdryer at a distance 10-15 Do not heat one point longer. 10 seconds.
• 🧲 Loss of screws. How to avoid: Put them in a magnetic bowl or on a sticky tape in order of extraction.
• 📵 Installation of glue strips incorrectly. How to avoid: Before installing a new battery, clean the case of old glue with alcohol.
• ⚡ Short circuit: Avoid: Do not touch the battery or motherboard contacts with metal tools.

⚠️ Warning: If the phone starts to warm up or run out quickly after the replacement, it is likely that the battery is defective or not installed correctly!

📌 What to do if the battery does not hold charge after replacement?

1. Check the capacity of the new battery through AccuBattery – you may have been sold a fake.
2. Reset your phone to factory settings (Settings → Additional → Restore and Reset).
3. Update your firmware to the latest version (sometimes older versions) MIUI miscalibrate).

💡

If you don't turn on after you change the battery, but when you connect to the charger, it shows a charging animation -- the problem is the power plume or the connector -- if it doesn't respond to charging at all, it's possible that the motherboard is damaged.

Calibration of the new battery

To make the new battery work properly, it needs to be calibrated, a procedure that helps the power controller determine the charge level correctly.

How to Calibrate the Battery in Xiaomi Mi Max 2:

1. Charge your phone to 100% and hold on charging for another 1-2 hours.
2. Turn off charging and use your phone until it automatically turns off (do not turn it on until it is completely discharged!).
3. Connect the charging and charge up to 100% without interruptions.
4. Repeat the discharge/charging cycle again 2-3 once.

After calibration, the phone will more accurately display the percentage of charge, and the battery will last longer.

💡 Tip: In the first days after replacement, avoid fast charging (use standard RAM on the device). 5V/2A). This will help the battery to get used to the new cycle.

7. Alternative methods: replacement of the battery in the service

If you are unsure of your abilities or are afraid of damaging your phone, you should contact the service center.

• 🔍 Xiaomi's official service. Pros: job warranty, original parts. Cons: high price (~3500-4500 ₽).
• 🛠️ Unofficial services. Pros: cheaper (~1500-2500 ₽), Cons: Risk of battery tampering, no guarantee.
• 📦 Self-replacement with warranty. Some stores (for example, Svyaznoy or M. Video) offer a service "replacement of the battery with your own hands" with the provision of tools and advice from the master.

⚠️ Note: Official Xiaomi services may refuse to replace the battery if the phone has been in informal repairs before (for example, changed the screen!

8.Frequent questions about replacing the battery with Xiaomi Mi Max 2