How to remove the battery from Xiaomi Redmi 5 Plus: disassembling the phone without risks

Why you might need to take your battery off the Redmi 5 Plus

Xiaomi Redmi 5 Plus (codenamed vinci) is a popular smartphone of 2018 release, which is still used by many users. However, over time, even the most reliable batteries lose capacity, swell or fail.

First, if the phone has stopped holding charge, quickly discharges or shuts down at 20-30% charge, these are clear signs of wear and tear of the lithium polymer battery. Second, battery bloating (even minor) is a critical malfunction that requires immediate intervention, as it threatens the safety of the device. Finally, battery removal is necessary for deep repair of the board, replacement of connectors or screen module.

In this article, you will find a step-by-step guide with nuances that are rarely mentioned in standard guides, from tool preparation to proper removal of the adhesive layer, and we will also explain how to avoid typical errors that lead to damage to the plumes or the body.

Preparation for disassembly: tools and security measures

Before you start disassembling the Redmi 5 Plus, make sure you have everything you need, and inappropriate tools or haste can cause plumes to break, scratch the body, or even short circuit.

• 🔧 Plastic mediators (2-3 - for tidying the body carefully. Metal blades can scratch the frame.
• 🔨 The screwdriver. PH00 — Important: don't use it. PH0 or PH1, so as not to tear the slime!
• 🧲 Magnetic mat or container for storing small parts (screws, latch), losing even one screw will complicate the assembly.
• 🔥 A hair dryer or a thermo-air station to soften the glue under the battery. 60-70°C!
• 🧴 Isopropyl alcohol (90%+) — acetone or solvents should not be used!
• 🛡️ Gloves and safety glasses - when working with a bloated battery (risk of electrolyte leakage).

Pay special attention to the disassembly area. Work on a clean, well-lit table without carpeting (static electricity!). If the battery is blown up, perform all manipulations away from open flames and spark sources.

⚠️ Warning: If the battery is very bloated (the body of the phone is deformed), do not try to prick it - this can cause fire.

Step 1: Turn off the phone and retrieve it SIM-map

The first and mandatory step is to completely shut down the power, and even if the phone doesn't respond to the power button, it doesn't mean that the circuit board isn't running on the voltage.

1. Press the power button for 10-15 seconds to force the Redmi 5 Plus to turn off.
2. If the phone doesn’t respond, plug it into charging — sometimes it helps to “wake up” the device to turn off.
3. Remove the tray for SIM-This will prevent damage to the tray when disassembling.

Wait 2-3 minutes after the switch is off, which is the time it takes to discharge the capacitors on the board. If you disassemble a phone with a discharged battery, the risk of short circuit is minimal, but precautions will not be superfluous.

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If the phone doesn’t turn off because it freezes, try holding the power button + volume up for 20 seconds – this will force the device to restart (works on most Xiaomi).

Step 2: Remove the Redmi 5 Plus Rear Cover

The Xiaomi Redmi 5 Plus case is fastened with latches and glue, so you need to remove it carefully. Start by heating the edge with a hairdryer (50-60 ° C) for 1-2 minutes, which will soften the glue and reduce the risk of latches breaking.

Then proceed with the algorithm:

1. Insert a plastic mediator into the gap between the case and the screen at the charging connector (the bottom of the phone).
2. Carefully drive the mediator along the edge, gradually snapping the mounts. Do not force - if the lid does not respond, warm up the area again.
3. Pay special attention to the area near the volume and power buttons - there are fragile plumes.

When you remove the lid, you'll see the inside of the phone. Don't touch the boards with your hands, static electricity can damage the chips. If the lid is difficult to remove, check if there are any unlatched clamps (you can tell by the characteristic sound).

Warmed up the edge with a hairdryer (50-60°C) |Use plastic mediator |Start from the charging connector area |Checking the perimeter clips |I don't apply excessive force-->

Step 3: Turn off the plumes and remove the battery

Now that the case is removed, you'll see the battery glued to the back of the board. Don't try to pull it out right away, it could damage the contacts or break the plumes.

1. Unscrew 5 screws that fix the metal plate over the battery (use the PH00 screwdriver).
2. Carefully remove the plate and put it aside - it will be useful when assembled.
3. Disconnect the battery connector with a plastic mediator, pull the connector, not the wires!

Once the power is out, you can start removing the battery, and it's attached to a double-sided tape that needs to be softened.

• 🔥 Warm up the battery with a hair dryer on the back (do not direct the air flow to the board!).
• 🧊 Tap the battery with a plastic blade in the recess area (usually next to the connector).
• 🔄 Gradually separate the battery by putting it on different sides. If it doesn't respond, repeat the heating.

If the battery is blown up, be even more careful - a puncture or deformation can lead to electrolyte leakage and fire, in which case it is better to use special suction cups for batteries or contact the service.

⚠️ Warning: If you smell a sharp chemical smell or notice smoke while removing the battery, stop disassembling immediately, take the phone outdoors and do not use it until the battery is replaced.

Step 4: Cleaning and Preparing for New Battery Installation

Once the old battery is removed, you need to make room for the new one, and the glue residue can interfere with the tight fit, so:

1. Remove residues of bilateral tape with isopropyl alcohol and a lilac-free wipe. Don't use acetone or solvents - they can damage the board!
2. Check the contacts of the battery connector for oxidation, clean them with eraser or alcohol if necessary.
3. If the new battery does not have adhesive layer, apply 3M double-sided tape to the back of the battery. the layer should be no more than 0.5 mm thick.

Before installing a new battery, make sure that its rated capacity is the same as the original one (for the Redmi 5 Plus, it is 4000 mAh). Using batteries with a different capacity can lead to incorrect operation of the charge controller.

Frequent Mistakes and How to Avoid Them

Even experienced users sometimes make mistakes when disassembling the Redmi 5 Plus, and here are the most common problems and ways to prevent them:

• 🔌 Screen plume damage occurs when the lid is not removed neatly. Always start to snap the case from the charging connector, not from the top where the plume passes.
• 🔥 Overheating of the board - if you heat the battery too long with a hair dryer, you can melt plastic cells or damage the chips.
• 🔋 Installation of a non-original battery - cheap analogues often have an understated capacity and can swell in a few months.
• 🛠️ Loss of screws: Redmi 5 Plus uses screws of different lengths, and if you mix them up, you risk damaging the board when you build them.

Another common mistake is the wrong build, and after the battery is replaced, the phone may not turn on because of:

• Unconnected battery connector (check if it sits tightly).
• A forgotten screw under a metal plate (this can cause a short circuit).
• Damaged power button plume (the phone will not respond to presses).

If you don't turn on after assembly, don't panic. Turn off the battery, check all the connectors, and repeat the assembly. 90 percent of the time, the problem is in the little things.

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The most common cause of battery failure after battery replacement is a loosely connected battery connector, and always check its fixation before final assembly.

FAQ: Answers to popular questions