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

Xiaomi Redmi 4X is one of the most popular budget smartphones of 2017, but even after 5-7 years of operation, the battery begins to die: quickly discharges, swells or refuses to hold the charge. If you decide to replace the battery yourself, the first thing you need to do is remove it correctly. In this article, a step-by-step photo instruction, a list of necessary tools, and critical nuances that are missed by 90% of masters.

Removing the battery on the Redmi 4X is complicated by the fact that it is glued to the body with double-sided tape, and underneath it hides plumes and connectors. Mistakes here can be fraught with damage to flexible cables to short circuit in sloppy disconnection, we will tell you how to avoid these problems and remove the battery without using a hair dryer or alcohol - only mechanically with minimal risk.

Preparation for disassembly: tools and security measures

Before you start, make sure you have everything you need. The Redmi 4X doesn't require professional equipment, but without the right tools, you run the risk of damaging the body or internal components.

• 🔧 Plastic blade (or mediator) - to separate the back cover.
• ⚡ Screwdriver cross (PH00) — hull-rotor.
• 🧲 Magnetic mat or container – to avoid losing small details.
• 🔋 Tweezers - for careful disconnection of plumes.
• 📸 Smartphone for photos – fix every step so as not to confuse the order of assembly.

Important: Redmi 4X has a non-removable battery, so removing it always carries the risk of damage. If the battery is swelling, do not try to puncture or bend it, this can lead to fire.

⚠️ Warning: If the smartphone has been in water or has been hit, disassembly can be dangerous! moisture under the battery can cause corrosion of contacts, and mechanical damage can short circuit.

Step 1: Turn off and discharging the smartphone

The first and most important step is to shut down the power completely, and even if the battery is dead, there may be a voltage in the capacitors.

1. Turn off the Redmi 4X with a long press on the power button (10-15 seconds).
2. If the smartphone does not respond, force the battery to discharge, connecting it to charging for 1-2 hours (even if it does not turn on).
3. Extract. SIM-card and memory card - they can interfere with the dismantling.

Why is this critical? When you run a battery under voltage, you run the risk of damaging the motherboard with static electricity or accidentally closing the contacts, and a bloated battery under load can ignite.

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If the power button doesn’t work, try holding it together with the volume button for 20 seconds – this sometimes helps force the device to turn off.

Step 2: Removal of the back cover

The Redmi 4X back panel is mounted on latches and glue, and you'll need a plastic blade or a special device to open your smartphone to remove it.

1. Start at the bottom edge of the case, where the charging jacks and headphones are located. Put the blade in the gap between the lid and the frame.
2. Carefully drive the tool along the perimeter, without going deeper than 1-2 mm - plumes pass under the lid.
3. When the latches begin to snap, do not pull the lid sharply: under it there may be a glued plume of the fingerprint scanner (if it is in your model).

If the lid doesn't lend itself, don't force it -- you've probably missed the latch. Try to warm the edges with a hair dryer (temperature no higher than 60°C) or use isopropyl alcohol to soften the glue. But remember, alcohol can damage the oleophobic coating of the screen!

Make sure your smartphone is off |

Check availability of all tools |

Take a picture of the screws |

Do not use metal objects for autopsy-->

Step 3: Unscrew screws and disconnect plumes

After removing the cover, you will see 10-12 They're screws that attach a metal plate to the battery, and they need to be twisted out with a cross screwdriver. PH00. It's important:

• 🔩 Whips of different lengths – remember or take pictures of which one is from.
• 📱 Under the plate are hidden the plumes of the display, cameras and buttons - they need to be disconnected with tweezers, pulling the black tongue-fixers.
• 🚫 Don’t pull the plumes themselves – just the connectors!

And you'll pay special attention to the flexible battery cable, which is glued to the motherboard, and you'll disconnect it.

1. Carefully tuck the connector with a plastic spatula.
2. If you do not succumb, warm up the area with a hairdryer (maximum 5 seconds!).
3. Do not use metal tools – the risk of closing contacts!

⚠️ Note: Some versions of Redmi 4X The fingerprint scanner plume goes under the battery, and if you damage it, the sensor will stop working!

Step 4: Removing the battery

Now the most critical thing is to separate the battery from the body. In the Redmi 4X, it's glued to double-sided tape, and there are two options:

We recommend a mechanical method with a plastic card:

1. Insert a card or mediator between the battery and the housing at the edge of the battery.
2. Slowly lead the tool along, without going deeper than 1 mm.
3. If you feel resistance, stop and check if you have hit the plume.

When the battery starts to move away, don't pull it around the corners, you better lift it evenly from both sides. If the glue is too strong, don't apply force: you'd better repeat the procedure on the other side.

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Never use metal objects to separate the battery – even a small circuit of contacts can knock out the power controller!

Step 5: Checking the battery and preparing for replacement

After removing the battery, examine it for:

• 🔋 Bloating – if the battery case is deformed, it cannot be used!
• 💧 Electrolyte traces – white or green plaque on contacts.
• 🔌 Connector damages – bent or oxidized legs.

If you find bloating, don't try to charge or "resuscitate" it. Lithium-ion batteries in this state are prone to spontaneous combustion. Dispose of it at special reception points (at Xiaomi stores or service centers).

Before installing the new battery:

1. Clean the contacts on the motherboard with alcohol napkins.
2. Check the integrity of the fingerprint scanner plume (if any).
3. Make sure the new battery has the same model number (e.g. BM43 or BM47 for Redmi 4X).

Frequent Mistakes and How to Avoid Them

Even experienced craftsmen sometimes make mistakes when replacing the battery.

• 🔧 Mixed screws – if you screw a long screw into a place for a short one, you can damage the board.
• 📱 Damaged display plume - often occurs when a metal plate is neatly removed.
• 🔥 Short circuit – if you forget to disconnect the battery before working with the board.
• 🧲 Lost parts – small screws or pads are easily lost.

To minimize the risks:

• Work on a clean, well-lit surface.
• Use an antistatic bracelet or touch grounded items periodically.
• Don’t disassemble your smartphone on a carpet or sofa – static electricity can damage components.

⚠️ Warning: If the smartphone doesn't turn on after assembly, check: Is the battery connected to the board, is the power plume damaged, is the metal plate installed correctly (it can close the contacts).

FAQ: Answers to popular questions