Replacement of the battery on Xiaomi Mi 6A: detailed instructions with photos and videos

Why Xiaomi Mi 6A Battery Fails and When to Change It

Xiaomi Mi 6A (released in 2017) is equipped with a non-removable battery capacity of 3080 mAh. Over time, even the original battery loses up to 30-40% of capacity after 500-600 charging cycles. If your Mi 6A discharges in a few hours, turns off at 20-30% charge or overheats during charging - these are sure signs of battery wear.

The manufacturer claims a battery life of 2 to 3 years, but in practice, the lifespan depends on the operating conditions. Frequent temperature changes, the use of non-original chargers and full discharges of up to 0% accelerate degradation. Check the battery condition in the AccuBattery app (Android) or through the engineering menu (#4636#### # → Battery information). If the Health score is below 70%, replacement is inevitable.

Should you change the battery yourself? Yes, if you have experience with small electronics and the right tools. The service center will charge from 1500 to 3000 rubles (depending on the region), whereas the original battery costs about 1000-1500 rubles. Below we will tell you how to do this without risking damage to the board or display.

📊 How often do you change the battery in your smartphone?
Every 2 years
Only when the charge stops holding.
Never changed.
I'm self-repairing.

What tools will be needed to replace

To disassemble the Xiaomi Mi 6A and replace the battery, prepare the following set of tools. Without them, you risk damaging the body or internal components:

  • 🔧 Plastic blades (2-3 pieces) - for careful lid slinging and disconnection of plumes.
  • 🔨 The screwdriver. PH00 — for the screws of the body (size less than the standard!).
  • 🔥 Dryer or thermo-air station - to soften the glue under the battery.
  • 🧲 Magnetic mat or tray – so as not to lose small screws.
  • 🔋 New battery - original (MBJ4024) or a qualitative analogue (for example, from Patona or Baseus).
  • 🧴 Isopropyl alcohol (90%+) — Cleaning contacts and removing glue residues.
  • 📏 Plastic scraper - to separate the battery from the body.

⚠️ Warning: Do not use metal screwdrivers to swell the battery, which can short circuit and cause the power controller to fail. Also avoid cheap batteries without overcharging protection: they can swell or ignite.

💡

Before disassembling, completely discharge the smartphone before turning off and wait 10-15 minutes. This minimizes the risk of fire if the battery is accidentally damaged.

Step-by-step: how to disassemble Xiaomi Mi 6A

Disassembly of the Mi 6A requires carefulness - the body is glued together and the plumes are brittle.

  1. Turn off your smartphone and remove it. SIM-map.
  2. Heat the back cover with a hair dryer (a temperature of ~60°C) for 2-3 minutes to soften the glue.
  3. Push the lid with a plastic blade starting at the bottom edge (near the USB-C connector). Use the second blade to hold the gap.
  4. Unscrew 10 screws with a PH00 cross screwdriver (they fix the metal plate above the battery).
  5. Disconnect the battery plumes, display and power buttons (use a spatula, don't pull the wires!).

📌 Important: On the Mi board 6A There's a brittle Wi-Fi connector (located next to the top left corner of the battery) that's easy to pull off when you're not moving gently!

Disconnect the smartphone and remove SIM-map|

Heat the back cover with a hair dryer (60°C, 2-3 minutes)|

Push the lid with a plastic blade from the bottom edge |

Unscrew 10 screws with a cross screwdriver PH00|

Disconnect battery plumes, display and power buttons-->

How to safely remove an old battery

The battery in Xiaomi Mi 6A is glued to the body with double-sided tape to remove it:

  1. Apply isopropyl alcohol on the edges of the battery (it dissolves the glue).
  2. Wait 1-2 minutes and gently tuck the battery with a plastic scraper.
  3. Don't pull the wires! Unplug the battery plume from the board until it's fully removed.
  4. Dispose of the old battery in special reception points (do not throw it in the trash!).

⚠️ Warning: If the battery is swelling, do not prick it - this can lead to fire.

What to do if the battery is too tight?
If alcohol doesn’t work, try heating the body with a hairdryer (not higher than 70°C!) and re-flagging the battery. Alternatively, use special suction cups for batteries (sold in smartphone repair kits).

Installation of a new battery: nuances and verification

Before installing the new battery:

  1. Check the contacts on the board and battery plume – they should be clean (wipe with alcohol).
  2. Stick bilateral tape to the back of the battery (usually included).
  3. Connect the plume to the board and fix the battery, slightly pressing it.
  4. Make sure that the cable is not clamped with a metal plate during assembly.

After assembly:

  • 🔌 Connect your smartphone to charging and check if the new battery is recognized.
  • 📊 Run AccuBattery and make sure your Health score is close to 100%.
  • 🔥 Watch the temperature – if the smartphone warms stronger than usual, check the density of the battery fit.

💡

After the battery is replaced, perform 2-3 full charge/discharge cycles (0% to 100%) to calibrate the power controller.

Comparison of batteries for Xiaomi Mi 6A: original vs analogues

There are three types of batteries available on the market for the Mi 6A:

TypeCapacityPrice (2026)PlusesCons
Original (MBJ4024)3080 mAh1200–1500 ₽Compatibility guarantee, long service lifeMore expensive than analogues, it is difficult to find on sale
Patona3200 mAh800–1000 ₽Increased capacity, good reviewsIt may slightly move out of the hull.
Baseus3080 mAh700–900 ₽Low price, easy installationQuality depends on the party
No-name (Chinese)2800–3100 mAh400–600 ₽CheapRisk of bloating, short service life

💡 Tip: If you choose an analogue, pay attention to the availability of protection against overcharging and certificates CE/RoHS. Cheap batteries without protection can damage the smartphone’s power controller.

Frequent Replacement Mistakes and How to Avoid Them

Even experienced users make mistakes when replacing the battery.

  • 🔧 Using the wrong screwdriver - screws Mi 6A non-standard size (PH00), And a regular screwdriver will rip the slats.
  • 🔥 Overheating of the body - if you heat the hair dryer for longer than 3 minutes or above 70°C, you can damage the display or board.
  • 📵 Wi-Fi antenna plume break – located next to the battery, requires special care.
  • 🔋 Installation of the battery without bilateral tape - will lead to backlash and rapid wear of contacts.
  • 🚫 Ignoring calibration – without 2-3 full charge cycles, the controller may misrepresent the charge level.

⚠️ Note: If the smartphone does not turn on after replacement, check:

  1. Is the battery plume connected to the board?
  2. Are the contacts closed (check with a multimeter).
  3. Have you damaged the flexible display cable (symptom: the screen doesn’t light up, but the phone vibrates).

FAQ: Answers to Frequent Questions

Can I replace the battery with Xiaomi Mi 6A without a hairdryer?
Technically, yes, but it will make it much more difficult. The glue under the lid and battery is very durable, and without heating you risk damaging the body or plumes. The alternative is to use a special glue solvent (like Loctite 7649), but it is expensive and requires caution.
How long does it take to replace the battery?
With tools and experience, about 30 to 40 minutes, beginners can take 1 to 1.5 hours, especially if the glue is not amenable, and take your time, because rushing often causes damage to the plumes or board.
How to check if the new battery is original?
The original Xiaomi Mi 6A battery has: MBJ4024 labeled on the label; a holographic sticker with the Mi logo; a clearly printed barcode and production date; it comes with double-sided tape for installation; counterfeits often have blurred seal, no markings or capacity mismatch (for example, 3500 mAh instead of 3080 mAh).
What if the battery is quickly discharged after replacement?
Possible causes: Poor battery — check model and manufacturer. Wrong calibration — perform 2-3 full charge cycles. Power controller damaged — if the smartphone warms or turns off at 50% charge, contact the service. Background processes — check battery consumption in Settings → Battery.
Can I use the battery from Xiaomi Mi 5A or Mi 8?
No! Other Xiaomi models are not compatible in: Size (Mi 6A battery has a unique shape), plume connector (different number of contacts), capacity and voltage (risk of damage to the board), use of incompatible battery can lead to short circuit or fire.