Replacement of the battery on Xiaomi Redmi 5 Plus: detailed instructions with photos and nuances

Xiaomi Redmi 5 Plus

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In this article, you can see step-by-step instructions with a photo, the choice of the original battery, the necessary tools and key nuances that are overlooked in most manuals, such as why you can not use metal blades to lash the lid or how to properly calibrate a new battery so that it lasts longer.

If you've never taken a smartphone apart, don't worry. The Redmi 5 Plus is one of those models where replacing a battery doesn't require professional skills, the main thing is patience and accuracy. And if something goes wrong, at the end of the article there's an FAQ with solutions to problems.

Signs that the battery is time to change

It's not always low battery life that means battery wear, sometimes it's software, backgrounds, or a damaged charging connector, but there are 5 clear symptoms that indicate that the battery is dying.

🔋 Phone's running out of power. 2-3 hours in normal use (social networks, instant messengers, calls).
📉 The percentage of charge “jumps”: for example, from 40% immediately drops to 15% after a reboot.
🔌 Charging is jerked or interrupted, even if the cable and power supply are serviceable.
📱 The case of the smartphone swelled (see the gap between the screen and the frame or “hump” on the back cover).
⚡ The phone turns off when 20-30% Charge, although the settings show a normal level.

If you have at least 2-3 items on your Redmi 5 Plus list, it's time to change your battery, and you can check the battery status through an engineering menu or an app like AccuBattery, and you can check the Health parameter on them: if it's below 70-75%, it's time to act.

Important: a bloated battery is dangerous, it can damage the screen, the motherboard, or even ignite when mechanically exposed, and if the case is deformed, don't delay replacing.

📊 How often do you change the battery in your smartphone?

Every 2-3 years

Only when the phone is no longer holding charge

I have never changed my phone, I am buying a new phone.

I don't change it myself, I give it to the service.

What battery to choose for Xiaomi Redmi 5 Plus

The original battery for the Redmi 5 Plus is BM4H and has a capacity of 4000 mAh. But the market is full of fakes that will last six months.

🏷️ Article: original — MBJ406350 or MBJ406351 (supplant NFC).
📦 Packaging: must be sealed, with a hologram and QR-code (you can check it on the Xiaomi website).
🔍 Appearance: the original has no rubbing, contacts are shiny, the label is flatly pasted.
💰 Price: the original costs from 1200 to 1800 rubles. Cheaper 800 rubles - most likely a fake.

If the original is difficult to find, you can consider quality analogues from proven brands:

Brand	Model	Capacity	Average price	Features
ZMI	PB01ZM	4000 mAh	900-1200 ₽	A good alternative to the original, it holds a charge almost like a native battery.
Baseus	BS-BAT01	4200 mAh	1100-1400 ₽	Increased capacity, but can protrude a little from the body.
Remax	RMB-40	4000 mAh	800-1000 ₽	Budget version, but serves less than the original (1-1.5 years).

Before buying, check the reviews on the marketplace (such as AliExpress or Wildberries) and see photos of real customers. Pay attention to the date of production: if the battery is more than 1 year old, its capacity has already decreased even in the package.

⚠️ Warning: Do not buy batteries with a capacity above 4200 mAh for the Redmi 5 Plus.

Battery replacement tools

To replace the battery with Xiaomi Redmi 5 Plus, you will need:

🔧 Plastic blades (2-3 (a) for the purpose of removing the lid and the sleeves.
🔩 The screwdriver (PH00 or PH0) — hull-rotor.
🧲 Magnetic mat or tray – so as not to lose small details.
🔥 Hair dryer or thermo-air station - for softening the glue (optional).
📱 Suction - will help remove the back cover (not necessarily, but simplifies the process).
🧴 Isopropyl alcohol (90%+) — Cleaning contacts and removing glue residues.

What NOT to use:

🚫 Metal blades or knives – scratch the body or damage the plumes.
🚫 Superglue or glue moment - a special double-sided tape is needed to fix the battery.
🚫 The power of the sleeves is weak and easy to break.

If you don't have a hair dryer, you can do without it, but the lid will be harder to remove. In extreme cases, use a regular hair dryer at maximum temperature (keep at a distance of 10-15 cm so that the screen does not overheat).

☑️ Preparation for battery replacement

Turn off the phone and remove it. SIM-mapPrepare the workplace (clean table, good lighting)Check the tools (driver, shoulder blades, sucker)Take a picture of the location of the screws and plumes before disassembly

Done: 0 / 4

Step-by-step instructions for replacing the battery

Now, to the process itself, follow the instructions in strict order to avoid damaging your smartphone.

Step 1: Turn off and prepare the phone

Turn off Redmi 5 Plus with a long press of the power button.
Remove the tray for SIM-cards (use a paper clip or special key).
If the screen cracks, seal it with tape so that the fragments do not get inside the case.

Step 2: Removal of the back cover

Heat the edge of the back cover with a hair dryer (especially near the buttons and charging connector) for 1-2 minutes.
Put a plastic spatula or suction on the lower edge of the cover (from the USB-Type C connector side).
Carefully drive the blade along the body, separating the lid. If you feel resistance, warm up the place again with a hairdryer.
Take the lid off and put it aside. Be careful, it's got a fingerprint scanner plume glued to it.

Step 3: Disconnecting the plumes and batteries

Unscrew 10 screws that fix the metal plate (they are of different lengths - remember where they were!).
Take off the plate and put it down.
With a plastic blade, gently dent and disconnect the plumes: Battery (red connector), Main board (black wide plume), fingerprint scanner (if you have one in your model).

If the battery is swollen, do not try to pull it out by force - puncture it in protected gloves and neutralize sodium (for example, fall asleep with soda).

Step 4: Remove the old battery

The battery in the Redmi 5 Plus is glued to the body to remove it.

Put a plastic shoulder blade on the battery from any angle.
If the glue is too strong, drop a little isopropyl alcohol under the battery - it will dissolve the glue.
Carefully pull the battery up, don't rot it. If it doesn't give in, use alcohol again.
After extraction, clean the body of glue residues with alcohol and a napkin.

Step 5: Installation of a new battery

Remove the protective film from the new battery (if any).
Stick double-sided tape onto the case (comes complete with the battery) or use the original glue.
Install the battery in place, making sure that it lies flat, without distortions.
Connect the battery plume to the motherboard.

Step 6: Build the phone

Connect all the plumes back (first the fingerprint scanner, then the main plume, then the battery).
Set a metal plate and twist the screws (do not pull!).
Stick the back cover. You can use B-7000 glue for reliability (a thin layer at the edges).
Put the tray in SIM-card and turn on the phone.

1. Is the battery plume connected correctly (should be a click when fixing).

2. Are the contacts closed on the motherboard (look for foreign objects).

3. Charge the phone. 10-15 Sometimes the new battery is discharged to zero».-->

Calibration of the new battery

After the battery is replaced, it needs to be calibrated so that the charging controller correctly determines the level of charge, which takes 1-2 charging/discharging cycles.

How to calibrate:

Charge your phone to 100% (use the original power supply).
Turn off charging and let the phone run until it is automatically turned off (do not turn it on during this period!).
Connect charging and charge up to 100% without interrupting the process (even if the phone already shows 100%, keep it charging for another 1-2 hours).
Repeat the discharge / charge cycle 1-2 times.

If you doubt your abilities, you better give the phone to the service. Replacing the battery in the Redmi 5 Plus will cost less than repairing the motherboard after a failed disassembly.

How long will the new battery last?

The battery life depends on three factors:

Battery quality – original or good analogue (for example, ZMI) will last 2-3 years, cheap fake – 6-12 months.
Operating conditions – avoid overheating (do not leave your phone in the sun), do not discharge to 0% and do not keep constantly on charging.
Number of charging cycles – Lithium polymer batteries are designed to 300-500 And then the tank starts to fall.

To extend the life of the battery:

🔌 Charge your phone at the temperature from +10°C +30°C.
📉 Avoid deep discharge (it is optimal to keep the charge between 20% and 80%).
🔋 Use an original or certified power supply (e.g, 5V/2A).
📱 Calibrate once every 3 months (full discharge/charging cycle).

If properly maintained, the new battery in the Redmi 5 Plus will last 2-4 years without noticeable loss of capacity. If you actively play games or use a navigator often, the battery can “sit down” faster – in about 1.5-2 years.

1. Does fast charging work (the original batteries support Quick Charge 2.0).

2. whether there is overheating when charging (if the phone is hot, check the contacts).

3. whether the charge level is correctly determined (if "jumping" - calibration is necessary).-->

FAQ: Answers to Frequent Questions

Can you replace the battery with Xiaomi Redmi 5 Plus without disassembling the body?

No, it's impossible. In the Redmi 5 Plus, the battery is soldered into the body and glued to the back cover. You have to take your phone apart to replace it. If you're promised "replacement without disassembly," that's a hoax.

After the battery is replaced, the phone doesn't turn on.

There are several reasons: The battery plume is not connected, check if it is tightly seated in the connector, close the contacts on the board, check the motherboard for foreign objects (screws, pieces of foil), damage to the charging controller — if the phone does not respond even to charging, you need repairs in the service. The battery is discharged “to zero” — connect the phone to charging for 15-20 minutes, then try to turn it on.

Should I reset my phone after replacing the battery?

No, battery replacement doesn't affect the software part. All data, applications and settings will remain in place. However, if the phone starts to brake or discharge quickly after the replacement, you can reset to factory settings via Settings → Additional → Restore and Reset.

Can I put a battery of larger capacity, for example, 5000 mAh?

Technically possible, but not recommended. Larger battery: May not fit into the case (even if it physically fits, it will press on the screen or back cover). Faster wear due to the increased load on the charging controller. Can cause the phone to overheat when used intensively. The best option is the original at 4000 mAh or a quality analogue (for example, Baseus 4200 mAh).

How do I check if my original battery has been sold?

Original battery for Redmi 5 Plus has: Hologram on the package with QR-code (check out Xiaomi's website) clear labeling BM4H and MBJ406350 (or MBJ406351 supplant NFC). The smooth, unwound contacts and the neat adhesion of the plume. 45-50 You can also check the capacity using the AccuBattery app, if it is significantly lower than the declared one, it is a fake.