How to remove the battery from Xiaomi Redmi Note 5: disassembly without damage

Why would you need to take off the battery?

The Xiaomi Redmi Note 5 battery is one of the most vulnerable components after 3-4 years of use. Even with careful use, the battery capacity decreases by 30-40%, and in some cases it begins to swell or overheat. Removal of the battery is required not only to replace, but also to diagnose other nodes: charging connector, display plume or speaker. However, the design of the smartphone does not provide easy access to the battery — it is glued to double-sided tape, and the body is fastened with latches and screws.

Many users are afraid to disassemble the phone themselves, and for good reason: wrong actions can lead to plumes breaking, damage to the board, or even fire a lithium-ion battery. In this article, we will learn how to dismantle the battery without risks, what tools will be required, and what to look for when you build it back. And if you doubt yourself, at the end of this article there are tips for choosing a service center.

Preparation: security tools and measures

Before you start disassembling, make sure you have everything you need. Xiaomi Redmi Note 5 (codenamed whyred) has a non-dissoluble body, so you can not do without specialized tools.

• 🔧 Plastic mediators or shoulder blades (2-3 (a) to separate the snails of the body.
• ⚙️ Screwdriver kit: cross-haired (PH00) and five-pointed (Torx) T3-T5) screw.
• 🔥 Dryer or thermo-air station - to soften the glue under the battery.
• 🧲 Suction - will help to raise the screen after heating.
• 🩹 Alcohol and wipes – to clean contacts and remove glue residues.
• 🔋 New battery (if you plan to replace it) – check compatibility with the Redmi Note 5.

Important: work on a clean, well-lit surface. Never use metal tools to smack the battery, it can short circuit! If the battery is swelling, it is better to trust the professionals to disassemble it, because these batteries are prone to spontaneous combustion when mechanically exposed.

⚠️ Warning: Before starting work, completely discharge the phone to 0% and turn it off. If the battery is swollen, do not connect the device to charge - this increases the risk of fire.

Step-by-step: how to remove the back cover

The Redmi Note 5 has two parts: the front (with a display) and the rear (with a Xiaomi logo). To access the battery, you first need to remove the back cover.

1. Turn off the phone and remove the tray for SIM-map.
2. Heat the back end edge with a hair dryer (~60°C) for 1-2 minutes. This will soften the glue.
3. Insert a plastic mediator into the gap between the lid and the case (start at the bottom edge where the charging connector is).
4. Carefully swipe the mediator around the perimeter, disengaging the latches.
5. When all the latches are snapped, remove the lid and put it aside.

Under the lid, you'll see:

• 🔋 Battery (stick to the body).
• 📱 Motherboard (fixed with screws).
• 🔊 Dynamics and vibrator.
• 📶 Antenna contacts (do not touch them with metal objects!).

⚠️ Warning: If the lid doesn't respond, don't try to rip it off, you'll damage the latches. Reheat with a hairdryer and try again.

Disconnection of plumes and dismantling of the battery

After removing the lid, you need to disconnect the battery from the motherboard to avoid short circuit.

1. Unscrew the screws that fix the metal plate over the battery connector (use the Torx T3 screwdriver).
2. Carefully put a plastic spatula on the battery connector and unplug it. Don't pull the wires!
3. If the battery is swollen, do not try to remove it by force - first soften the glue with heating (temperature ~70 ° C, 3-5 minutes).
4. Put a plastic card or a special spatula on the edge of the battery, and if the glue is too strong, use isopropyl alcohol to dissolve it.

During the dismantling process, be sure not to damage:

• 🔌 Flexible display plume (passes next to the battery).
• 📟 Contacts NFC-antennas (if you have them in your modification).
• 🔊 Speaker and microphone (located at the bottom of the body).

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If the battery is too glued, don't rush to rip it out. Put the phone in a warm place for 10-15 minutes (for example, on the heating battery) - the glue will become softer.

Frequent Mistakes and How to Avoid Them

Even experienced craftsmen sometimes make mistakes when disassembling the Redmi Note 5, and here are the most common ones and ways to prevent them:

• 🔧 Use of metal tools → It leads to contact closure. Always use plastic or wood.
• 🔥 Battery overheating with a hairdryer → It can cause it to ignite. Maximum temperature is 70.°C, distance 10 cm.
• 💧 Liquid hitting the board → Even a drop of alcohol on a chip can knock your phone out!
• 🔌 Display plume break → It happens when you take the battery off carelessly.

Another common problem is that the battery is not fully disconnected from the board, and if you forgot to disconnect the connector, you can damage the power controller when you dismantle it, and always check that the battery is off before you pull it out of the case.

Installation of a new battery and assembly of the phone

If you've successfully removed an old battery, it's time to install a new one.

1. Check the compatibility of the new battery. It should be marked BM44 or 3850 mAh (original capacity for the Redmi Note 5).
2. Clean the contacts on the board and battery with alcohol. Make sure they are dry before connecting.
3. Apply a new double-sided tape on the case (you can use the original Xiaomi glue or analogue 3M 9448A).
4. Connect the battery connector to the board and gently put it in place, pressing from the center to the edges.
5. Twisting all the screws and install the back cover starting at the top (where the camera is).

After assembly, turn on the phone and check:

• 🔋 Charging (connect the cable and make sure the current is going).
• 📶 Communications (check work) SIM-maps and wifi).
• 🔊 Sound (speaker and microphone must work without interference).

⚠️ Warning: If the battery is not turned on after the battery is replaced, check if the connector is properly connected. If the problem persists, the board or train may be damaged.

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Use only original or certified batteries, and cheap ones can not only fail quickly, but also damage the charging controller.

When is the best time to contact the service?

While the battery replacement in the Redmi Note 5 is feasible at home, there are some cases where it’s best to trust the professionals:

• 🔥 Battery swelling or deformed (risk of fire!).
• 🛠️ Requires replacement of the display plume or charging connector.
• 💻 The phone will not turn on after self-disassembly.
• 🔧 No experience with small parts or soldering equipment.

The cost of replacing a battery in a service center varies from 1,500 to 3,000 rubles (depending on the region and status of the service). Xiaomi official centers use original spare parts, but their services are usually more expensive.

If you decide to contact the service, specify:

• 📋 Is there a guarantee for battery and work.
• ⏱️ Time frame (usually) 1-2 day-day).
• 💰 Cost of diagnosis (sometimes included in the price of repair).

FAQ: Answers to Frequent Questions