Xiaomi Redmi smartphones are known for their reliability and affordability, but even they are not immune to battery problems. Over time, the battery can swell, lose capacity or fail — and then it has to be removed for replacement or diagnosis. However, improper handling of lithium-ion batteries can short circuit, fire or damage the board.
In this article, we’ll discuss how to safely remove the battery from Redmi (including Note 10/11/12, Redmi 9/10 and others), what tools you’ll need, and what to look for to avoid making repairs an expensive mistake. If you’ve never disassembled a smartphone, some models require professional equipment, and disassembling yourself can be insurmountable.
Preparation: What to Know Before Disassembly
Before you start screwdriver, make sure you understand the risks. Modern Xiaomi Redmis have non-removable batteries glued to the case.
- 🔧 You will need a special tool (plastic blades, sucker, tweezers).
- 🔥 Risk of battery damage from careless extraction (bloated batteries are particularly dangerous!).
- ⚠️ Xiaomi warranty is canceled upon self-opening of the case.
- 📱 Some models (e.g. Redmi Note 11 Pro)+) have additional latches under the battery.
If your Redmi is still under warranty, you should contact a service center, and if the warranty has expired or you are willing to take a risk, read on. Importantly, work on a non-conductive surface (wooden table, rubber mat) and away from open fire sources.
Battery recovery tools
Without the right tools, you risk damaging the plumes, the display, or the battery itself.
| Tool. | Appointment | Where to buy |
|---|---|---|
| Plastic spatula (spudger) | Braking the battery without scratching | AliExpress, electronics stores |
| Suction cup (for screen) | Safe separation of the display from the body | Smartphone repair kits |
| Thin metal mediator | Careful penetration under the adhesive base | Specialty shops |
| Isopropyl alcohol (90%+) | Removal of glue residue | Pharmacies, radio shops |
| Thermo-air station (dryer) | Softening of glue (for complex cases) | Optionally, for professionals. |
⚠️ Warning: Do not use knives, screwdrivers or other metal objects to smack the battery! One careless movement will puncture the battery, leading to electrolyte leakage or fire.
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If you don't have a thermo-air station, you can carefully heat the body with a hair dryer (not above 60°C) to make the glue softer. But don't overheat - plastic can deform!
Step-by-step: how to remove the battery
The disassembly process may vary slightly depending on the Redmi model, but the overall layout is the same.
- Turn off your smartphone and remove it. SIM-map.
- Heat the back cover with a hair dryer (if it is glued) or tuck it with a plastic spatula, starting at the corner near the charging connector.
- Unscrew all the screws that hold the metal plate above the battery (usually 8-10).
- Carefully disconnect the battery plume from the motherboard, and it's attached with a small connector -- put it in a spatula.
- Put the battery on a plastic mediator, starting at the edge, and if it doesn't lend itself, put the isopropyl alcohol under the battery to dissolve the glue.
- Remove the battery without bending it or putting excessive effort.
Is the smartphone off the grid?
Is the back cover removed?
Is the battery plume disconnected?
Is there a fire extinguisher on hand (in case of emergency)?-->
⚠️ Attention: If the battery is swelling, do not try to prick it or bend it! Bloating indicates an unstable chemical reaction inside - such a battery can ignite when mechanically exposed.
Frequent Mistakes and How to Avoid Them
Even experienced craftsmen sometimes make mistakes when working with Xiaomi Redmi batteries.
- 🔌 Not disconnected battery plume before retrieval → short-circuit.
- 🔥 The body was overheated by a hair dryer → plastic deformation or damage to the display.
- 🛠️ We used metal tools. → battery-piercing.
- 🧴 Remains of glue were not removed before installing the new battery. → bad-face.
If after removing the battery, the smartphone does not turn on, check:
- Is the battery plume connected to the motherboard?
- Any damage to the battery contacts.
- Did other plumes (such as the display or power buttons) disconnect during the disassembly?
What to do if the battery is too tight?
Redmi models with disassembly features
Some Xiaomi smartphones have unique nuances when retrieving the battery.
- Redmi Note 8/9 Pro: The battery is glued very strongly, often requiring a thermo-air station.
- Redmi 10/10A: An antenna plate is located under the battery, and it is easily damaged.
- Redmi K40/POCO F3: Additional latches under the battery that need to bend.
- Redmi Note 12 Pro+: The battery is split into two parts (main and secondary), making it difficult to replace.
Before disassembling, find the video instructions for your model to avoid unpleasant surprises. For example, in the Redmi Note 11S, the battery plume is hidden under a metal plate, and it is easy to miss.
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If you are not confident in your abilities, it is better to entrust the replacement of the battery to professionals. ₽) It is often justified, especially for flagship models.
Recycling of the old battery
Lithium-ion batteries can not be thrown into ordinary garbage! They contain toxic substances and can spontaneously ignite if damaged. In Russia and CIS countries, there are several ways to dispose of the battery:
- 📦 Electronics reception points (for example, Ecotechnologies, MegaRecycle").
- 🏬 Xiaomi stores (some take old batteries when buying a new one).
- 🚛 Special eco-containers in hypermarkets (for example, in Leroy Merlin").
Before disposing of the battery, discharge it to 0% and seal the contacts with tape, which will prevent accidental circuiting. If the battery is swelling, place it in a non-combustible container (for example, a metal can of sand) and recycle it as soon as possible.