How to remove the battery from Xiaomi Redmi 4X: instructions with photos and tips

Removing the battery from the Xiaomi Redmi 4X is a challenge that owners face when replacing the battery, repairing after a fall or diagnosing malfunctions. The Redmi 4X (codenamed santoni) came with a non-removable battery glued to the body, so the process requires caution and special tools. Unlike older phones with a lid, here you will have to disassemble the device almost completely.

Many users are afraid of damaging plumes or screens, and for good reason: improper battery extraction can short circuit, damage to the power controller or even fire. In this article, we will take a step-by-step algorithm, list the necessary tools and explain how to minimize the risks. If you have never disassembled smartphones, you should contact a service center. But if you decide to act on your own, follow the instructions carefully.

⚠️ Attention: Battery in Redmi 4X It's connected to the motherboard with a flexible plume, and if you cut off or damage your contacts, you can knock your phone out of order. If the battery is swelling, don't try to puncture or bend it, because it's dangerous to your health!

When to remove the battery with Xiaomi Redmi 4X

Removing the battery is not a routine procedure, but it is only done in a few cases:

• 🔋 Battery replacement – if the capacity has fallen below 60% of the nominal capacity (original Redmi battery) 4X Signs: the phone runs out in 2-3 hours, turns off at 20-30% charge, overheats.
• 🔧 Repair after falling – if the impact occurred on the back cover, the battery could move away from the contacts or deform.
• ⚡ Fault diagnosis – when charging problems (phone not turning on, not responding to charger) sometimes it is necessary to check the integrity of the battery plume.
• 💥 Battery bloating – if the phone case has become convex, and the screen “steps away” from the frame, the battery needs to be urgently replaced.

Some users try to remove the battery to reset or "reboot" the phone. This is pointless and dangerous: there is a Recovery menu to reset, and a physical power outage can damage the chips.

⚠️ Warning: If the phone is in water, don’t take it apart right away – it can cause a short circuit.First dry the device completely in rice or silica gel for at least 48 hours.

Preparation: security tools and measures

To disassemble the Xiaomi Redmi 4X, you will need:

• 🔧 Plastic blades (mediators) - for separation of the back cover and the battery.
• 🔨 Cross screwdriver (size) PH00 or PH0) — screw.
• 🧲 Magnetic mat or tray – so as not to lose small details.
• 🔥 Hair dryer or thermoair station - for softening the glue (optional, but recommended).
• 🧴 Isopropyl alcohol (90%+) — glue-residue.
• 🛡️ Gloves and safety glasses – if the battery is swollen.

Before starting work:

1. Turn off the phone and remove it. SIM-memory-card.
2. Charge the battery to 20-30% - a fully discharged battery can react unstable to mechanical stress.
3. Work on a clean, well-lit surface.

⚠️ Note: If you use a dryer, do not heat the battery above 60°C, which can cause damage to the body. Keep the hot air flow 10 to 15 cm from the body.

Step-by-step: how to remove the battery from Xiaomi Redmi 4X

We start with the back cover, and in the Redmi 4X, it's mounted on the latches and glue, so we're going to be careful.

1. Removing the back cover: Heat the edge of the phone with a hairdryer (especially near the volume buttons and charging connector) for 1-2 minutes. Insert a plastic blade into the gap between the lid and the body and carefully guide it around the perimeter. The latches should snap with a characteristic sound. 💡If the lid does not lend itself, do not apply force - warm up the problem area with a hair dryer again.
2. Under the lid, you'll see 12 screws (of different lengths!) Unscrew them all and put them in order -- it's important to put each one back in place when you assemble. The screws around the camera and the Type-C connector are usually longer than the others.
3. Carefully tuck in the black battery connector (located next to the motherboard) and unplug it. Use a plastic blade to avoid damaging the contacts. What does the battery connector look like? This is a small black or white connector with 3-4 contacts, attached to the motherboard, usually marked with the words "BATT" or "Battery".
4. Battery extraction Under the battery are strips of glue. Put a plastic blade on either side of the battery and slowly pull up. If the glue doesn't lend itself, put the isopropyl alcohol under the battery, it will dissolve the glue in 5-10 minutes. Don't use metal tools!

⚠️ Warning: If the battery is swelling, do not try to bend or puncture it. Carefully remove and place in a sealed container (such as a can of salt) for disposal.

Frequent Mistakes and How to Avoid Them

Even experienced users sometimes make mistakes when disassembling the Redmi 4X.

• 🔩 The screws are screws of different lengths, and if you screw a long one into a place for a short one, you can damage the motherboard. Solution: put them in order or take pictures of the location.
• 🔥 Battery overheating -- if you heat it too long with a hair dryer, the glue can dry even harder, and the battery can deform. Solution: heat it in short intervals of 30 seconds.
• ⚡ Short circuit: if you accidentally touch the battery and the housing contacts with a metal tool, solution: use only plastic blades.
• 📱 The damage to the screen plume -- it goes under the battery and can break if you're not properly extracted -- Solution: don't pull the battery upwards, slowly separate the glue.

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The most common reason for a breakdown is a rush, so if something doesn't work out, pause and double-check your actions.

If the phone does not turn on after the battery is removed, check:

1. Is the battery plume connected to the motherboard?
2. There's no visible damage to the contacts.
3. Whether all screws are installed correctly (sometimes an untwisted screw blocks the inclusion).

How to choose a new battery for Xiaomi Redmi 4X

The original battery for the Redmi 4X is labeled BM47 or BM48 and has a capacity of 4100 mAh.

• 🔋 Capacity – Do not take batteries with a capacity above 4200 mAh, this can lead to overheating.
• 🏷️ Marking – the original batteries have a hologram and a serial number that matches the box.
• 🔌 Connector – must match the connector on the motherboard (3 or 4 pins).
• 🛡️ Guarantee – Reliable sellers give a guarantee of at least 6 months.

The cost of the original battery is from 800 to 1500 rubles. Analogues (for example, from ZMI or Baseus) can cost less, but their resource is usually lower.

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Check the seller's reviews before buying, often under the guise of original batteries, fakes are sold with a capacity 2-3 times lower than the declared one.

What to do after replacing the battery

After installing a new battery, follow the following steps:

1. Calibrate the battery Fully charge the phone, then discharge until it automatically shuts down. Repeat the cycle 2-3 times, which will help the power controller correctly determine the capacity.
2. In the first days after replacement, make sure that the phone does not overheat (normal - up to 40 ° C when charging). If the battery warms more, check the density of the case.
3. Run a resource-intensive application (like a navigator) and check how fast the battery is draining, and the normal consumption is 10-15% per hour.

If after replacement the phone has become faster discharged or does not hold the charge, the following reasons are possible:

• 🔌 Faulty power controller on the motherboard.
• 🔋 Battery defective (check the voltage multimeter - should be 3.7-4.2 V).
• 📱 Damaged battery plume.

Alternatives: When you don’t need to remove the battery

Sometimes users try to remove the battery to solve problems that can be solved software.

• 🔄 Resetting – If the phone is buggy, try resetting through Settings → Additionally. → Recovery and discharge.
• 🔌 Cleaning the charging connector - often charging problems are caused by port pollution.
• 📱 Firmware update – some power bugs are fixed in new versions MIUI.

If the phone does not turn on, but when connecting to the charger shows the indicator, the problem may be:

1. Faulty cable or power supply.
2. Oxidized battery contacts (clean with alcohol).
3. Firmware failure (try logging into Fastboot - pinch Volume Down + Power).

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In 80% of cases, battery failures are due to software failures or contamination of connectors, not physical battery failure.

FAQ: Frequent questions about Xiaomi Redmi battery 4X