How to change the battery Xiaomi Mi Max 2: video + detail

Xiaomi Mi Max 2

battery-degraded

Many people are afraid to take up repairs on their own for fear of damaging the board or the display, but in fact, the procedure is no more difficult than replacing a battery in a watch — if you know the nuances. In this article, we will analyze the step-by-step instructions with a video, tell you which battery to choose, what tools you will need, and how to avoid typical errors. And also reveal secrets that do not tell in 90% of reviews (for example, why a new battery can not hold from day one).

Let me warn you right away: if you've never taken a smartphone apart, start by watching the video instructions (we'll pick them up below), visual accompaniment will help you avoid major mistakes, such as damage to the display plume or disconnection of the battery contacts, and if you've already dealt with repairing equipment, feel free to get to work, armed with our tips.

Important: The Mi Max 2 has a non-removable battery soldered to the motherboard with thin contacts, which means that replacing the old battery and soldering a new one — or using a special adapter (which we will talk about in the tool section). You can do without a soldering iron, but the risk of damage to the fee increases.

1. Signs that the battery Xiaomi Mi Max 2 is time to change

Low autonomy doesn't always mean battery wear. Sometimes the problem lies in software failures or application background power consumption. To avoid wasting money, check out these "symptoms":

• 🔋 Bloating: If the back of the smartphone is breathing or there are gaps between the screen and the frame, it's 100% a sign of a lithium-ion battery bloating. Dangerous! This battery needs to be replaced immediately, it can damage the display or even ignite.
• ⚡ Instant discharge: the phone is turned off when 20-30% charge, and after connecting charging shows 0% It turns on. It's a loss of battery capacity.
• 🔥 Overheating during charging: if the body is heated so that it is impossible to hold in your hands, and charging is extremely slow, most likely, the battery controller is disrupted.
• ⏳ Reduced work time: the new Mi Max 2 hold on 1.5-2 If it's now discharged, it's now in moderation. 4-6 Clock: Capacity falls below critical level.

To diagnose the problem accurately, use the AccuBattery app (available on Google Play), which will show the actual battery capacity and the degree of wear and tear. 60-70% from the original 5300 mAh - time to act.

⚠️ Warning: If the battery is swelling, don't try to prick it or squeeze it! Lithium-ion batteries can ignite or explode if damaged.

What battery to choose for Mi Max 2: original vs analogues

The original battery for Xiaomi Mi Max 2 is marked BM4D And it's 5,300 mAh, but it's almost impossible to find it on the market today, because Xiaomi has long since retired, and it's replaced by third-party models:

We recommend paying attention to batteries from proven brands:

• 🔝 ZOP Power - capacity of 5200 mAh, good reviews, warranty 1 year.
• 🔋 Baseus - budget version with a capacity of 5000 mAh, suitable for temporary replacement.
• 🛠️ Shenzhen Grepow is a premium counterpart with overheating protection, but expensive (about 3000). ₽).

Avoid AliExpress and unknown sellers, because you can run into a fake.

• 🛒 Beru (official shops)
• 🛒 Caspi (there are reviews and seller ratings)
• 🛒 Local service centers (sometimes sell batteries with a guarantee)

⚠️ WARNING: If you see a battery for the Mi Max 2 with a capacity of 6000 mAh or higher, that's a hoax! The maximum capacity that can be installed in the case of a smartphone without modifications is 5300 mAh. The more capacious batteries either have overrated performance or will not fit in the compartment.

3. Replacement tools: what will be needed

To replace the battery with the Mi Max 2, you'll need a minimal set of tools. Don't skimp on quality, cheap plastic blades can break and damage the plumes.

• 🔧 Screwdriver kit: cross-haired PH00 and flat 1.5 mm (for screws of the rear cover).
• 🔨 Plastic blades / mediators - for careful lid slinging and disconnection of plumes.
• 🔥 Stolen iron (power 30-40 W) + solder + Flux – if you are unplugging an old battery.
• 🧲 Magnetic mat or screw container – to avoid losing small details.
• 🔌 Battery adapter (optional) - if you do not want to solder, you can buy a battery with an already soldered connector JST 2.0.
• 🧴 Isopropyl alcohol (90%+) — cleansing contacts from old glue.
• 🔍 Lupa or magnifying glass - useful for working with small contacts.

If you've never soldered, consider an adapter, which is a small board that plugs into the motherboard instead of the old battery, and it's already connected to the new battery via the connector. It costs about 300 to 500. ₽, But it simplifies the process considerably.

Step-by-step: how to disassemble the Mi Max 2 and replace the battery

Before starting work, turn off the phone completely and remove it. SIM-Disassemble on a clean, well-lit surface, and if the battery is swelling, wear safety glasses and gloves.

Step 1 Remove the back cover

1. Heat the back cover with a hair dryer (temperature 60–70)°C) for 2-3 minutes. This will soften the glue.
2. Insert a plastic blade into the gap between the lid and the body (start at the bottom edge where the charging connector is).
3. Carefully drive the shoulder blade around the perimeter, disconnecting the latches. Don't put too much effort into it, the cover is attached to 15-20 clips.

Step 2. Disconnect the plumes

• Unscrew 4 screws that fix the metal plate over the plumes.
• Carefully tuck the battery connectors, display and power buttons. Use a spatula or tweezers.
• Take a picture of the location of the plumes, so as not to confuse the assembly.

Step 3: Remove the old battery

There are two options:

1. If the battery doesn't swell, put a spatula on it and pull it out carefully. The glue is usually not very strong.
2. If the battery is swelling, don't try to pull it out, it may burst. It's better to cut it with a knife (be careful not to damage the board!) or use isopropyl alcohol to dissolve the glue.

Step 4: Installation of a new battery

• If you use an adapter: solder it to the contacts on the board (where the old battery was), then connect the new battery through the connector.
• If soldering directly: clean the contacts with alcohol, apply flux, solder the wires of the new battery, observing the polarity (+ and –).
• Secure the battery on double-sided tape (comes complete with a new battery).

Step 5: Build the phone

1. Connect all the plumes in reverse order.
2. Install the back cover and snap the clips (you can slightly heat the hair dryer for better fixation).
3. Turn the screws (do not pull!).

After assembly, don't turn the phone on immediately - let the glue under the lid grab hold (10-15 minutes). Then plug in the charger and check if the new battery recognizes.

5. Video Instructions: Best Replacement Battery Replacement Videos

Text instruction is good, but without visual accompaniment, it will be difficult for a newcomer. We have selected 3 verified videos that will help avoid errors:

• 🎥 Disassembly Xiaomi Mi Max 2 with battery replacement (Step-by-step) Channel: "Phone repair with your own hands" Pros: detailed show soldering, explanation of nuances with adapter. Cons: long introduction (you can skip until 2:30).
• 🎥 Replacement of the Mi Max 2 battery without soldering (with adapter) Channel: "Gadget Repair" Pros: shown the process using the adapter JST 2.0, suitable for beginners. Cons: not considered the case with a bloated battery.
• 🎥 How to sell off Xiaomi battery (universal method) Channel: "Electronics" DIY" Pros: explains the safety of soldering, shows the tools. Cons: not specific to the Mi Max 2, but useful for general understanding.

Viewing tip: Turn on subtitles and slow down playback to 0.75x, If you don't understand something, pay attention to the little details, like the author holding a soldering iron or putting on the plumes.

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If you use a thermo-air station to remove the lid in the video, and you only have a hair dryer, don't worry.°C).

6. Common mistakes and how to avoid them

Even the skilled craftsmen sometimes make mistakes when replacing the battery. TOP-5 Failures and How to Prevent Them:

• 🔧 Display plume damage Cause: Too rough scapula scapula scooping. Solution: Use a thin plastic card instead of metal tools.
• ⚡ Short circuit in soldering Cause: accidental blowing of a soldering iron to neighboring contacts Solution: cover adjacent elements with foil or shrink tube.
• 🔋 Incorrect battery polarity Cause: confused + Solution: Mark the contacts with a marker before you unplug the old battery.
• 🔥 Overheating of the board Cause: too powerful soldering iron or long soldering Solution: use a soldering iron 30-40 watts and work with short touches (no longer than 3 seconds).
• 📱 The touchscreen doesn't work after assembly. The reason is that the sensor plume is not connected or it's damaged. Solution: disassemble the phone and check the connection of the plume (it goes separately from the display!).

If the battery is discharged quickly after replacement, check:

• 🔌 Is the charger properly connected (sometimes it departs when assembled).
• 📊 Have you lost your power settings (reset your phone and reset your cache to Settings) → Annexes).
• 🔋 Is the new battery defective (check the voltage multimeter - should be 3.7-4.2 V).

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If after replacement the battery does not hold the charge, in 90% of cases it is not the battery itself that is to blame, but the wrong soldering or damaged charging plume.

7. Alternative methods: if you do not want to disassemble the phone

Not everyone can replace a battery on their own, and if you're afraid of damaging your phone or don't have the tools, consider these options:

• 🛠️ The cost of replacing the battery in the official services of Xiaomi – 2500-3500 ₽ (In informal workshops, it is cheaper (1500-2000) ₽), The risk of a poor battery is higher.
• 🔄 On Avito or Yule you can find Mi Max 2 with a serviceable battery for 5000-7000 ₽. It is more expensive than repairing if the phone is old.
• 🔌 If autonomy has fallen uncritically, carry an external battery. For example, Xiaomi Power Bank 3 (20,000 mAh) will charge the Mi Max 2 3-4 times.

If you still decide to give the phone for repair, ask the master these questions:

• 🔋 «What battery will you put on? Is there a guarantee for it?»
• 🛠️ «You will use or use an adapter?»
• ⏳ «How long will it take to repair? (normal 1-2 hours).

8.Care for a new battery: how to prolong its life

Even the best battery will not last long if it is not used correctly. Follow these tips to keep the new battery battery on charge longer:

• 🔌 Avoid full discharge: recharge your phone at 20-30%, do not bring to 0%.
• ⚡ Do not use “fast charging” all the time: it accelerates battery wear. 5V/2A.
• 🌡️ Watch the temperature: Do not leave your phone in the sun or near heat sources. The optimum temperature is 10-35.°C.
• 📵 Disable unnecessary functions: GPS, NFC, 4G (If not used, significantly reduce the time of work.
• 🔄 Calibrate the battery: once every 2-3 months completely discharge and charge the phone to 100% (this will reset the controller errors).

To monitor battery status, install the AccuBattery app (free on Google Play) and it will show you:

• Real battery capacity.
• Discharge speed in different modes.
• Battery temperature.

⚠️ Warning: If you use wireless charging, remember that it heats the battery more than wired charging, which reduces battery life by 15-20%.

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Compliance with simple rules of operation can increase the life of the battery by 30-50%, for example, if you do not overheat and avoid full discharges, the battery will last 3-4 years instead of 1-2.

FAQ: Frequent questions about replacing the Mi Max battery 2