Removing the battery from a Xiaomi phone is a procedure that may be necessary when replacing the battery, repairing the motherboard or eliminating the effects of moisture. However, most modern models are not designed for self-service: their bodies are glued together, and their batteries are soldered to the board or fixed with special glue. Wrong actions can lead to damage to the plumes, short circuit or even fire.
In this article, we will discuss how to safely remove the battery from different Xiaomi lines – from the budget Redmi to the flagship Mi and POCO. You will learn what tools you need, how to avoid typical errors and when to contact the service center.
Preparation: What to Know Before Starting
Before you start disassembling, consider the feasibility of the procedure. 90% of the time, replacing the battery in Xiaomi requires:
- 🔧 Special tools (suction cup, mediator, tweezers, hair dryer or a station for heating glue).
- 🔋 Knowledge of handling lithium-ion batteries (fire risk in case of puncture!).
- 📱 Microelectronics experience (damage to the display plume or antenna will result in expensive repairs).
If your Xiaomi is still under warranty, a self-opening will void it. The manufacturer recommends that you contact authorized service centers. However, if you decide to act yourself, follow the instructions below.
⚠️ Attention: Xiaomi batteries are often glued to the body with heat glue, they can swell or leak if they are forced to break away. If the battery is already swelling, don't try to remove it yourself.
Battery recovery tools
Minimum disassembly kit:
| Tool. | Appointment | Where to buy |
|---|---|---|
| Plastic mediator (0.2–0.5 mm) | Separation of the body without scratches | AliExpress, Radio Goods Stores |
| Suction cup (∅ 30-50 mm) | Raising the screen after heating the glue | Phone repair kits |
| Thermophen (or household hair dryer with nozzle) | Softening of glue (temperature 60–80 °C) | Construction shops |
| Tweezers with curved ends | Disconnection of plumes and traction belts | Electronics stores |
| Isopropyl alcohol (90%+) | Cleaning glue residues | Pharmacies, radio shops |
For models with soldered battery (for example, Xiaomi 12S Ultra) will additionally require a soldering station with a thin sting and flux. Without the experience of soldering, it is better not to risk - an error can bring down the power controller.
💡
If you don’t have a thermophen, use a household hair dryer at maximum power, but keep it 10-15 cm away from the body to avoid overheating the display.
Step-by-step instructions: how to remove the battery
The disassembly process varies depending on the model, but the overall sequence of actions is as follows:
- Turn off the phone and remove it. SIM-If the battery is blown, don't turn on the device!
- Warm the adhesive around the body with a hair dryer (2-3 minutes). Do not direct hot air to the display or camera.
- Put the body in the mediator, starting at the bottom edge (near the USB-C connector). If it doesn't, warm up again.
- Disconnect the display and battery plumes (use tweezers). In some models, the battery plume is hidden under a metal plate.
- Remove the battery: 🔹 If the battery is on traction bands (for example, Redmi 9) – pull them evenly. 🔹 If glued - slap the mediator, pre-dropping isopropyl alcohol under it. 🔹 If you are a squirrel, then you need to be a squirm (only for experienced ones!).
Phone is off and discharged to 20-30% |
There are tools and alcohol at hand to clean |
Workplace is lit and free from metal objects |
The spare battery (if you plan to replace) is compatible with the model-->
In the POCO F3/F4 and Xiaomi 11T models, the battery is often fixed with double-sided tape, which requires gently sticking a thin plastic card under the battery and slowly "cutting" the glue as you move from one edge to the other.
⚠️ Warning: If the battery starts to hiss, smoke, or heat up when it is removed, immediately place it on a non-combustible surface (such as ceramic tiles) and move away!
Features for popular Xiaomi models
The design of the batteries varies depending on the line, and let's look at the nuances for the most common devices:
Redmi Note 10/11/12
In these models, the battery is attached to traction tapes, but often additionally glued, and the main difficulty is the fragile plume of the fingerprint scanner that goes under the battery, which is easy to tear if you are not careful to remove it.
Tip: before pulling the tapes, warm up the case from the back (from the camera side) - this will soften the glue under the battery.
POCO F3/F4/F5
The batteries here are without traction tapes, but they're fixed with double-sided tape all around the perimeter, and the POCO F5 has an additional metal plate over the battery, which you have to unscrew before you take it out.
Careful: in these models, the battery plume connector is fragile. When disconnected, pull the plastic part, not the wires!
Xiaomi 12/13 Pro
The flagship models are equipped with graphene batteries, which are often soldered to the board, and their replacement requires:
- 🔥 Soldering station with a temperature of 300-350°C.
- 🛠️ Flus and solder.
- 📏 Accurate polarity when installing a new battery.
Without soldering experience, it is not recommended to try to replace the battery in these models - the risk of damaging the power controller is too high.
What to do if the battery is glued to death?
Frequent Mistakes and How to Avoid Them
Even experienced craftsmen sometimes make mistakes that lead to permanent damage.
- 🔥 Overheating the body with a hairdryer - can melt plastic clips or damage OLED-Optimum temperature: 60-80°C.
- ⚡ Short circuit when tweezers touch the battery contacts. Always disconnect the battery plume first!
- 🔧 Damage to the display plume when the screen is lifted. Use a suction cup and mediators, not a screwdriver.
- 💥 The battery is punctured with a sharp tool, and the lithium-ion batteries ignite when punctured.
Another common problem is that the battery is not fully powered down, and even if the phone is turned off, there may be residual charge on the board, so to avoid being electrocuted, before work:
- Hold the power button for 15-20 seconds (discharge the capacitors).
- Disconnect the battery plume first.
- Work on an isolated surface (such as a wooden table).
1. Correct connection of the battery plume.
2. Integrity of contacts on the motherboard.
3. Presence of damage on flexible plumes (display, power button).-->
When to contact the service center
Self-replacement of the battery is justified if:
- ✅ You have experience in disassembling electronics.
- ✅ The phone is not a flagship model (e.g. Redmi). 9A or POCO M3).
- ✅ You are prepared to risk damaging the device.
In the following cases, it is better to trust professionals:
- 🚫 Battery swollen or leaking (chemical burn risk!).
- 🚫 Phone for warranty (self-repair cancels it).
- 🚫 Model with a graphene battery (Xiaomi) 12S Ultra, Mix Fold).
- 🚫 You are not sure about your soldering skills (for soldered batteries).
The cost of replacing the battery in the service center Xiaomi varies from 1,500 to 5 000 rubles depending on the model.
- Redmi Note 10 - ~1 800 rubles.
- POCO F3 - ~2,500 rubles.
- Xiaomi 13 Pro – ~ 4,500 rubles.
⚠️ Attention: informal services often install cheap analogues of the original batteries, such batteries can quickly discharge or swell!