Why Removing the Battery Is Not Always a Trivial Task
Modern Xiaomi Redmi smartphones are designed with compactness and reliability in mind, but this often means that access to internal components — including the battery — is as complicated as possible. If older models (such as the Redmi 1S or Redmi 2) had a removable battery, then since the Redmi 3/Note 3, the manufacturer has switched to non-removable batteries glued to the body, which complicates repair, but does not make it impossible.
The main reasons why users want to remove the battery are replacement with a new one (due to loss of capacity), repair after bloating (dangerous to the screen and motherboard), or diagnosing malfunctions (for example, in case of sudden shutdowns). However, without the right tools and knowledge, the process can damage the plumes, break the battery or even fire. In this article, we will discuss how to avoid errors and conduct the procedure safely.
Importantly, if your Redmi is still warranty-worthy, self-opening the case will invalidate it, in which case you should contact Xiaomi Service Center or authorized repairs. For the rest, read on.
What tools will be needed to remove the battery
Without specialized tools, it is almost impossible to remove the battery from the Xiaomi Redmi.
- 🔧 Plastic mediators or shoulder blades (to unscramble the body without scratching) Metal tools can damage antenna lines or plumes.
- 🔥 A dryer or a thermo-air station (at least 500 watts) for softening the adhesive. Heating temperature is 60-80°C.
- 🧲 Screen suction cup (helps to lift the front panel after heating).
- ⚡ Isopropyl alcohol (90%+) You can't use acetone or solvents, because they're going to damage the plastic!
- 🛠️ Torx screwdrivers T3–T5 (Some devices (e.g. Redmi Note 10 Pro) use five-point screws.
- 🔋 New bilateral scotch or glue B-7000 (If you plan to install the battery back).
Also prepare protective gloves (batteries contain lithium, which is dangerous when in contact with the skin) and non-metallic tweezers for careful extraction of plumes.If you don't have soldering experience, don't try to disconnect the battery without turning off the power plume - this can lead to short circuits!
⚠️ Warning: Never use a knife or sharp objects to rattle the battery. Lithium batteries can ignite if punctured. If the battery is swelling, work in a well-ventilated room and keep sand or a class D fire extinguisher handy.
Step-by-step: how to remove the battery from Xiaomi Redmi
The process varies from model to model, but the overall scheme is the same. Consider a universal algorithm using the Redmi Note 11 (similar to most Note and Redmi devices since 2018).
Step 1: Turn off and prepare the smartphone
Before starting work, completely discharge the phone (up to 0%) and turn it off. This minimizes the risk of short circuit. If the battery is swelling, do not connect the device to charge - this can cause fire.
Step 2: Removal of the back cover
Heat the back cover around the perimeter with a hair dryer for 2-3 minutes, holding the device at a distance of 5-7 cm. The temperature should be sufficient to soften the glue, but not melt the plastic.
- With a sucker, lift the lid near the on button.
- Insert a plastic mediator into the resulting gap and carefully lead it along the body, disconnecting the latches.
- Do not put too much effort – if the lid does not lend itself, heat it again.
Step 3: Disconnect the battery plume
When you remove the lid, you'll see the battery glued to the body. First of all, unplug the power plume (usually located at the top of the battery and covered with a black insulation tape). Use tweezers or a plastic shovel to gently lift the connector. Never pull the wires - just the connector itself!
Is the phone off the grid?|Battery discharged to 0%?|Is there a fire extinguisher on hand?|Are protective gloves in place?|Are the tools ready (mediators, hair dryer, alcohol)?-->
Step 4: Removing the battery
The Xiaomi Redmi battery is glued with double-sided tape or gel glue to remove it:
- Put a plastic shoulder blade on the battery from any angle.
- If it does not respond, heat the surface of the battery with a hair dryer (no more than 60 ° C!).
- Pull on special "ears" (if any) or use the filaments to extract batteries (sold in repair kits).
- Remove the remains of the glue from the body with isopropyl alcohol.
If the battery is swelling, do not try to bend or puncture it. Carefully remove and dispose of it at special reception points (in Russia - through the Ecotechnologies system or the Svyaznoy stores).
⚠️ Note: In the Redmi Note 9 Pro and later, the battery may have a graphite gasket for heat sink. Don't hurt it, it protects the chipset from overheating.
What to do if the battery is too tight?
Features of battery removal on popular Xiaomi Redmi models
The design of the battery compartment varies depending on the series and year of release, and the following are key differences for the most common models.
| Model | Type of battery attachment | Features | Difficulty of extraction (1–5) |
|---|---|---|---|
| Redmi 4/4X | Double-sided scotch | Easy access, but fragile camera plumes | 2 |
| Redmi Note 5/5 Pro | Gel glue + scotch | Heat a hair dryer, risk of damage to antenna lines | 4 |
| Redmi 8/8A | Glue + metal frame | It is very tightly glued, often swelling. | 5 |
| Redmi Note 10 Pro | Glue + graphite pad | You need to carefully remove the gasket so as not to damage the chipset. | 4 |
| Redmi 12/12C | Glue + reinforced frame | It is difficult to separate without special threads for batteries. | 5 |
In Redmi K-series models (for example, the K20 Pro or K50), the battery is often integrated into the cooling system, and without experience it is better not to risk it, because an error can lead to overheating of the processor.
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If you're removing the battery for replacement, take a picture of all the plumes and screws before you start work, and this will help you avoid errors when you build them back.
Frequent Mistakes and How to Avoid Them
Even experienced craftsmen sometimes make mistakes when working with Xiaomi Redmi batteries, and here are the most common ones and ways to prevent them:
- 🔥 Puncture or battery deformity. Lithium batteries are extremely sensitive to mechanical damage. If the battery is swelling, don't press it, it can lead to electrolyte leakage or fire.
- ⚡ If you start removing the battery without disconnecting it from the motherboard, you can burn the charging controller. Always check the multimeter shutdown.
- 🛠️ Using the wrong tools. Metal screwdrivers or knives scratch the body and can close contacts. Use only plastic or wooden mediators.
- 🔋 Overheating with a hair dryer. Temperature above 80.°C can melt plastic parts or damage the screen.Keep the hair dryer at a distance and move it constantly.
- 🧴 Using the wrong solvent: Acetone or gasoline breaks down plastic and rubber seals!
Another common problem is that the fingerprint scanner plume, which is often located next to the battery, is damaged, and in the Redmi Note 8 Pro and later, the plume is very thin and breaks when you're not moving sloppy, and if the scanner stops working after you build it, check the integrity of the contacts.
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If you're not sure about your skills, you should trust the battery replacement to the professionals. service repair cost (1,500-3,000) ₽) Often lower than the price of a new phone after a failed self-intervention.
How to check the battery after removal
Before you put the battery back in or dispose of it, you should evaluate the state of the battery.
- Visual inspection: check if there are swelling, cracking or traces of electrolyte leakage (white plaque) if the battery is deformed, it can not be used.
- Voltage check: use a multimeter to measure the voltage on the contacts. The norm for lithium batteries is 3.7-4.2 V. If the indicator is below 3.0 V, the battery is deeply discharged and may be faulty.
- Capacity test: if you have one USB-Tester, connect the battery to the charger and see how much power it can take in. Compare it to passport capacity (e.g., 5020 mAh for Redmi Note 11 Pro).+).
If the battery is swelled but not damaged, it can be discharged under controlled conditions (e.g., by connecting a 12V light bulb through a resistor) before disposal. Never throw lithium batteries into ordinary garbage - they can spontaneously ignite!
Recycling of the old battery: rules and points of reception
Lithium batteries are hazardous waste and require special disposal, and the following rules apply in Russia:
- 🗑️ It is forbidden to throw batteries into ordinary garbage containers or plastic/glass containers.
- ♻️ It is allowed to hand over electronics (for example, "Svyaznoy", "M. Video", "Eldorado") or special eco-containers (installed in many hypermarkets) to the points of reception).
- 🔋 The billowing batteries should be handed over separately, having previously placed them in a non-combustible container (for example, a metal can with sand).
Xiaomi’s battery recycling programs are available in Moscow and St. Petersburg through partner service centers, and you can find out more about them on Xiaomi’s support website. In the regions, contact local eco-operators (e.g. Ecotechnologies or Megapolisresurs).
⚠️ Warning: If you keep an old battery at home, keep it in a cool place (such as in the refrigerator) in a sealed bag.Do not allow contact with metal objects - this can cause a short circuit.