Xiaomi Redmi 6A — One of the most popular budget smartphones released in 2018, and despite its modest specs, the device is still in use today for its reliability and low price, but over time, even the best battery loses capacity. Your phone starts to run out quickly, shut down when it's low, or refuse to turn on at all. 6A It takes less than 3-4 hours to replace it.
In this article, we will discuss in detail how to change the battery to Xiaomi Redmi. 6A From choosing a new battery to fully assembling your phone, you will learn what tools you need, how to avoid disassembly errors, and what to do if the phone doesn’t turn on after you replace it. We will also give recommendations on how to calibrate the new battery and care for it so it lasts as long as possible.
Warning: Replacing the battery is an interference with the design of the device, which can lead to loss of warranty (if it is still valid) or damage to the phone. If you are not sure of your abilities, you better contact the service center. But if you are willing to take a risk, let's go!
When is the time to change the battery to Redmi? 6A?
The battery of a smartphone is consumable, and over time its capacity inevitably decreases. 6A replace:
- 🔋 The phone discharges in 2-3 hours with moderate use (social networks, instant messengers, calls).
- 🔌 Charging is kept at the level of 1-5% and drops sharply to 0% (symptom of a voltage failure).
- 🔄 The device spontaneously turns off at 10-30% charge, and after switching on shows 0%.
- 🔥 The battery swelled (see above the raised back cover or screen glass).
- ⚡ The phone gets very hot during charging or working.
If you see any of these symptoms, check the battery status with special applications, such as AccuBattery (available on Google Play). 6A normal capacity of the new battery is 3000 mAh. If the application shows less than 2000 mAh, the battery is critically worn out.
You can also check the battery status through the engineering menu: ##4636## → Battery health should be close to 100%. If it's below 70%, it's time to change the battery.
What battery to choose for Xiaomi Redmi 6A?
Original battery for Redmi 6A has the following characteristics:
- Capacity: 3000 mAh
- Voltage: 3.85 V
- Type: Li-Pol (lithium-polymer)
- Connector: 3 contacts (B)+, B-, NTC)
- Articulum: MB01 or DM-07 (party-wise)
When choosing a new battery, pay attention to:
- 🔍 Originality: Better to buy Xiaomi or Mi-labeled batteries from official suppliers. Counterfeit products often have understated capacity and can be dangerous.
- 📦 The kit must include: battery, double-sided tape for fixation, protective film (sometimes).
- 🔧 Compatibility. Make sure the battery socket and dimensions match the original. 6A The battery is the same as the Redmi 6).
- 💰 The original battery costs 800-1500 rubles. If it's below 500 rubles, it's probably a fake.
Where to buy: Official sources: Xiaomi service centers, Mi Store stores, authorized resellers (for example, Svyaznoy, M. Video marked "original"). Verified online stores: AliExpress (sellers with a rating above 98%), Beru, Ozon (look for reviews with photos).
| Model battery model | Capacity | Compatibility | Approximate price |
|---|---|---|---|
| Xiaomi MB01 (original) | 3,000 mAh | Redmi 6A, Redmi 6 | 1200–1500 ₽ |
| ZMI ZLX-3000 (analogue) | 3,000 mAh | Redmi 6A, Redmi 6, Redmi 7A | 800–1000 ₽ |
| Baseus BAT-XM6A | 3200 mAh | Redmi 6A (capacity) | 1100–1300 ₽ |
| No-name (Chinese) | 2800-3000 mAh | Redmi 6A (low-risk) | 400–700 ₽ |
⚠️ Don’t buy batteries with a capacity above 3200 mAh for Redmi. 6A. Increased capacity can cause the battery to overheat or bloat due to a charging controller mismatch.
Preparing for replacement: tools and safety
Before you disassemble the phone, prepare everything you need.
- 🔧 Plastic blades (2-3 pieces) for dissociating the body.
- 🔨 Cross screwdriver (size) PH00 or PH0) screw.
- 🧲 Magnetic mat or cog container (so as not to lose).
- 🔥 Hair dryer or thermo-air station (for softening glue).
- 🧴 Isopropyl alcohol (90%+) clean-up.
- 📱 New battery with double-sided tape.
- 🛠️ Tweezers for working with small details.
We also recommend:
- Take it off. SIM-map and memory card before disassembly.
- Charge your phone to 30-50% (a fully discharged battery can be dangerous).
- Work on a clean, well-lit surface (it is better to cover the table with white cloth).
Turn off the phone from charging|Take it off. SIM-card|Prepare tools|Check the battery charge (30–50%)|Take a picture of the location of the screws-->
If you don't have phone disassembly experience, practice on an old device or watch video instructions on YouTube.The Repair Universe or iFixit channels often post detailed Xiaomi repair guides.
⚠️ Attention! Do not use metal tools to tamper with the body, it can damage the plastic latches. If the glue is too strong, warm the body with a hair dryer (temperature not higher than 60).°C), but do not direct the airflow to the screen or battery!
Step-by-step: how to disassemble Redmi 6A and replace the battery
Now, to the most critical stage, disassembling the phone and replacing the battery, follow the instructions carefully so that you do not damage the plumes or the board.
Step 1 Remove the back cover
1. Turn off the phone and put it down with the screen.
2. Heat the back end of the hair dryer in a circle for 1-2 minutes (hold the hair dryer at a distance of 5-10 cm).
3. Insert a plastic blade into the gap between the body and the cover (start at the bottom edge where the charging connector is). Carefully drive the blade along the body, snapping the latches.
4. When the lid starts to move, don't pull it sharply - there are plumes from the fingerprint scanner and antenna underneath.
Step 2. Shutting down the battery
1. Under the lid, you'll see the battery covered with black film, and at the top of the battery is a power connector (white connector).
2. Gently put a plastic spatula on the connector and unplug it from the motherboard. Don't pull the wires -- just the connector itself!
3. to check that the phone is completely de-energized, you can press the power button - the screen should not respond.
Step 3: Remove the old battery
1. Battery at Redmi 6A Stick it to the body, and you can pull it from any corner with a plastic spatula and slowly pull it up.
2. If the battery does not respond, warm it with a hair dryer (not higher than 50).°C!) and try again. Don't use metal tools, they can puncture the battery!
3. After extraction, examine the battery for swelling. If it is deformed, do not press on it and do not puncture it - it is dangerous!
Step 4: Installation of a new battery
1. Clear the place under the battery from glue residues with isopropyl alcohol.
2. Remove the protective film from the new battery and glue it to the place of the old one (use double-sided tape from the kit).
3. Connect the battery connector to the motherboard. Make sure the connector sits tight, without any distortion.
Step 5: Build the phone
1.Put the plumes in your seats (do not clamp them!).
2. Close the back cover, starting at the top, and snap it around the perimeter.
3. Twistle all screws (do not pull!).
4. Turn on the phone and check if the charge is recognized (plug the charger).
What if the phone doesn’t turn on after replacement?
What to do after replacing the battery?
We've had a successful battery replacement? Great! But in order for the new battery to last, you have to calibrate it and operate it properly.
Calibration of the new battery:
- Completely discharge the phone before turning off.
- Charge up to 100% without interruptions (use the original charger).
- Turn off the charger and let the phone work for 1-2 hours.
- Repeat the discharge / charge cycle 2-3 times.
Care tips:
- 🔌 Avoid full discharge (keep the charge at 20–80%).
- 🔥 Do not use your phone while charging (especially for gaming).
- ❄️ Do not leave the device in the cold or in direct sunlight.
- 🔄 Once every 3 months, perform a full discharge/charging cycle for calibration.
We also recommend turning off background processes that drain the battery quickly: → Battery → Energy saving regime.
💡
If the phone discharges quickly after replacing the battery, check if the application that consumes a lot of power is running in the background. → Battery → Battery usage and sort applications by charge consumption.
Frequent Mistakes and How to Avoid Them
Even with a careful battery replacement, you can make mistakes that will cause your phone to fail, and here are the most common problems and solutions.
| Problem. | Reason. | Decision |
|---|---|---|
| Phone's off. | Poor contact of battery connector | Check if the connector is sitting tight on the board |
| Fast discharge. | Poor battery or background processes | Check the capacity in AccuBattery, calibrate the battery |
| Phone overheats | Battery bloating or processor overload | Replace the battery, check for viruses |
| No charge recognition. | The connector or plume is damaged. | Clean the contacts with alcohol, check the cable |
If after replacing the battery, the phone began to restart or turn off on its own, most likely the problem is:
- Faulty battery (marriage or fake).
- Damaged power controller on the motherboard.
- Poor contact between battery and board.
⚠️ Attention, if you accidentally punctured or damaged an old battery in a disassembly, you can't throw it into the trash. Lithium polymer batteries can spontaneously ignite.
Should I change the battery myself or contact the service?
Replacement of the battery in Xiaomi Redmi 6A — If you have experience disassembling equipment (for example, changing the screen or cleaning your laptop), you can do it in 30 to 60 minutes:
- 🛠️ You do not have the necessary tools (dryer, plastic shoulder blades, tweezers).
- 🔧 You are afraid of damaging the plumes or motherboard.
- ⚡ Phone for warranty (self-repair it cancels).
- 💥 Old battery swells or leaks (it's dangerous!).
Cost of battery replacement in the service:
- Official Xiaomi service: 1500-2500 rubles (including work and original battery).
- Unofficial workshops: 800-1500 rubles (risk of unoriginal spare parts).
If you decide to change the battery yourself, here’s what will save you time and nerves:
- 📺 Watch Redmi's video demolition 6A YouTube before starting work.
- 📸 Take photos of each stage of the dismantling so as not to confuse the details during the assembly.
- 🕒 Make sure you have at least 1-2 hours to repair (take your time!).
💡
Replacing your battery yourself will cost less than service, but requires care. If you're not sure about your skills, you'd better consult a specialist, especially if the phone is important for work or school.