Replacing the battery on Xiaomi Redmi 4: a complete guide with photos and videos

Xiaomi Redmi 4

This article includes step-by-step smartphone analysis, tips on choosing a new battery, a list of necessary tools and key nuances that even experienced craftsmen miss. We also show you how to verify the authenticity of the battery before buying and avoid typical assembly errors.

⚠️ Important: Redmi 4 It was produced in three versions - Redmi. 4 Standard (4X), Redmi 4 Prime and Redmi 4 Their housings and batteries are interchangeable, but the capacity of the batteries is different (4100 mAh Standard/4X and 4160 mAh Prime/Pro). Make sure you buy the right model!

Signs that it is time to change the battery

Take your time to disassemble your smartphone at the first sign of a problem, sometimes a faulty charging cable, a contaminated microUSB connector or background apps are to blame, and the following symptoms indicate that you need to replace your battery:

🔋 The smartphone discharges by 30-50% in 1-2 hours without active use (when the screen is turned off).
🔥 The body is noticeably heated in the battery area even with minimal load.
📱 The screen “bulges” or a gap appeared on the back cover (a sign of battery bloating).
⚡ Charging is interrupted or the smartphone is turned off at 20-30% charge, although then it is turned on again.
🔄 In settings (Settings) → Battery: The actual capacity is less than 70% of the factory capacity.

If two of the items on the list match, the battery is already dangerous: a bloated battery can damage the screen or board, and an overheated one can ignite, in which case it is better not to postpone the replacement.

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

Every 2-3 years

Only when the charge stops holding.

I never use it to the point of death.

I change my own at the first sign of wear.

Which battery to choose for Redmi 4: original vs analogues

The original Xiaomi batteries for Redmi 4 have long been discontinued, but the market is full of high-quality analogues. The main thing is not to run into a fake with a capacity 2-3 times lower than the declared one.

1. Capacity. Redmi 4 Standard/4X 4100 mAh (article MBJ416560), Prime/Pro 4160 mAh (article MBJ416660) Analogs can have a capacity of up to 4500 mAh, but this is marketing: the real capacity rarely exceeds 4200 mAh.

2. Manufacturer. Reliable brands:

🔝 ZMI (Official partner of Xiaomi – the best price/quality ratio.
🔋 Baseus – budget batteries with good reviews.
🛡️ Patona – German brand, 12 months warranty.
⚡ Green Cell is a Polish manufacturer, often found in Russian stores.

Protection against counterfeiting: The original battery must have:

- Hologram with the Xiaomi logo (on analogues - brand sticker).

- QR-Check code (scanned through Mi Authenticity Check app).

Date of production (not older than 1-2 years).

💡 Tip: Before buying, check the reviews of the seller on AliExpress, Wildberries or Ozon. If the price is below 800 rubles, it is most likely a fake with a capacity of 2000-2500 mAh.

How to check the capacity of a new battery?

To make sure that the battery is not “basement”, use the application AccuBattery (Android): 1. Charge the smartphone to 100% and turn off the charge. 2. Discharge to 0% without recharging. 3. In the Health section, the application will show the real capacity. If it is less than 90% of the declared, return the battery to the seller.

Battery replacement tools

To disassemble Redmi 4 you will need:

🔧 Plastic blades (2-3 pieces) - for separation of the cover and battery.
🔨 Cross screwdriver (PH00 or PH0) — hull-rotor.
🧲 Magnetic mat or container – so as not to lose screws.
🔥 Hair dryer or thermo-air station - for softening the glue (optional).
🧴 Isopropyl alcohol (90%+) — glue-residue.
📦 New bilateral scotch (e.g, 3M 9448A) — battery-lock.

⚠️

⚠️ Warning: Do not use metal blades or knives - they can puncture the battery or damage the plumes! If there are no plastic tools at hand, a guitar mediator or an old bank card will do.

The cost of a full set of tools is about 500-800 rubles. If you do not plan to repair regularly, you can do with a minimum set:

- Screwdriver (100-150 rubles).

- Plastic spatula (50-100 rubles).

- Alcohol and cotton swabs (50 rubles).

Turn off your smartphone and remove it. SIM-map|Prepare a workplace with good lighting|Take a photo of the back cover (useful when assembly)|Check the new battery for defects|Wear an antistatic bracelet (optional)-->

Step-by-step: how to disassemble Redmi 4 and replace the battery

The replacement process takes 30 to 60 minutes. Follow the instructions carefully - errors in the disassembly stage can damage the plumes or display.

Step 1 Remove the back cover

Turn off your smartphone and remove the tray for SIM-map.
Heat the back cover around the perimeter with a hair dryer (60-80°C, 2-3 minutes) to soften the glue.
Insert a plastic blade into the gap between the lid and the body (start with the lower left corner where the microUSB connector is).
Carefully swipe the shoulder blade around the perimeter, separating the lid. If it doesn't lend itself, warm up again.

Step 2. Shutting down the battery

Under the lid, you'll see a battery covered with black film. Don't pull it, it's protection!
Unscrew 10 screws (marked in the photo below) with a cross screwdriver. Remember the location of the screws of different lengths, when assembled, they should fall into place.
Disconnect the battery plume (it is under the metal plate) and put a shovel or tweezers on it.

Step 3: Remove the old battery

The battery is glued to the body. Put a blade on it from any angle and slowly pull it up. If the glue is too strong, put the isopropyl alcohol under the battery and wait 1-2 minutes.
Don’t bend the battery or use force – Lithium-ion batteries can ignite if damaged!
After extraction, clean the body of glue residues with alcohol and a napkin.

Step 4: Installation of a new battery

Remove the protective film from the new battery and glue bilateral tape to its back.
Carefully insert the battery into the groove, starting at the top (where the connector is) and make sure it lies flat, without skewing.
Connect the battery plume to the board. It should snap with a click.

Step 5: Build a smartphone

Put the metal plate in place and twist all the screws (observe order!).
Press the back cover and make sure all latches are in place, warm it up with a hair dryer if necessary for better fixation.
Turn on your smartphone and check the charge: if done correctly, it will show the current battery level.

💡

1. Is the battery plume connected to the board?

2. is the lid skewed (it may press the power button).

3. Are there any propellers or foreign objects left inside.-->

Frequent Mistakes and How to Avoid Them

Even experienced users make mistakes when replacing a battery, and here are the most common ways to prevent them:

Mistake.	Effects of consequences	How to avoid
Use of metal tools	Battery puncture, short circuit, fire	Work only with plastic blades
Hydrogen overheating	Melting plastic, damage to plumes	Keep the hair dryer at a distance of 10-15 cm, the temperature is not higher than 80 ° C.
Incorrect screw installation	Damage to the board, broken buttons	Take a picture of the location of the screws before disassembling
Strong bending of the battery when retrieved	Shell rupture, electrolyte leakage	Use alcohol to dissolve the glue
Dust hitting the lid	Scream buttons, poor cap fixation	Work in a clean room, wipe the details with alcohol

⚠️

⚠️ Note: If after replacing the battery, the smartphone began to discharge faster than before, check: - Is the plume correctly connected (sometimes it departs during assembly). - Is the new battery swelled (marriage occurs even in well-known brands). - Are background processes running (check in Settings). → Battery).

How long will the new battery last?

The battery life depends on three factors:

Battery quality: Original or certified analogues (ZMI, Patona) last 2-3 years when used actively. No-name batteries can fail after 6-12 months.
Operating conditions: Overheating (above 40°C) and deep discharges (below 10%) reduce the resource by 30-50%.
Charger: Use the original Xiaomi (5V/2A) adapter or certified analogues. Quick charging from third-party RAM accelerates degradation.

📊

💡

When properly operated, the new Redmi 4 battery retains 80% of its capacity after 500 full charge cycles (approximately 1.5-2 years of use).

To extend the life of the battery:

🔌 Avoid charging to 100% and discharging to 0% – optimal range of 20–80%.
☀️ Do not leave your smartphone in the sun or near heat sources.
🔄 Calibrate once every 3 months: completely discharge and charge your phone.
📵 Turn off Wi-Fi, Bluetooth and GPS, if they don't need them.

Alternatives: repair service vs purchase of a new smartphone

If you're unsure of your abilities or fear damaging your smartphone, contact the service center.Average battery replacement prices in Redmi 4 in 2026:

Type of service	Cost (rupe)	Pluses	Cons
Official Xiaomi service	2 500–3 500	6-12 months warranty, original parts	Long (3-7 days), expensive
Local service centre	1 200–2 000	Fast (1-2 hours), cheaper	Risk of unoriginal spare parts
Self-sustaining replacement	500–1 500	Minimum costs, experience of repair	Risk of smartphone damage

💭 Should you change the battery in Redmi 4 or buy a new smartphone:

If the phone is used for calls, instant messengers and easy tasks, replacing the battery will prolong its life by 2-3 years.

If you need modern games, a camera or 5G – consider budget new products (Redmi 12C, POCO M6 Pro).

⚖️

The smartphone is completely satisfied with the performance.

You are ready to spend 1-2 hours on repairs or 1,500-2000 rubles in the service.

- You don’t need modern functions (for example, NFC or 90Hz screen).-->

FAQ: Answers to Frequent Questions

Can I replace the battery with a Redmi 4 without a hair dryer?

Alternative methods: - Use isopropyl alcohol - drop it around the perimeter of the lid and wait 5-10 minutes. - Carefully tuck the lid with a guitar mediator or a bank card, but the risk of damage to the body is higher. - If the glue is very strong, you can put the smartphone in a warm place (for example, on the battery) for 15-20 minutes.

What if the smartphone does not turn on after replacing the battery?

Check this: Is the battery plume connected to the motherboard (sometimes it leaves when assembled); is the back cover skewed, it can push the power button; is there any foreign objects (screws, pieces of tape) left inside; try charging your smartphone for 10-15 minutes, sometimes the new battery is discharged to zero; if nothing helps, maybe damaged the plume or board. Contact the service.

How to check if the battery is original?

Original Xiaomi batteries have: - Hologram with the brand logo (when tilted, changes color). - QR-code that can be checked through the Mi Authenticity Check application. - Production date (format) YY/MM, for example, 23/05 — may 2023). - Smooth seams and clear labeling (fakes often have curved inscriptions) If the seller refuses to provide a photo of the hologram or QR-The code is a reason to doubt the originality.

How long does it take to replace the battery in the service?

In most service centers, the procedure takes 1-2 hours if there is no queue. In official Xiaomi services, it can take 3-5 days due to diagnostics and warranty procedures. When replacing yourself, it takes 1-1.5 hours for beginners, and for experienced ones, 20-30 minutes.

Can I use a battery with a larger capacity than the original?

Theoretically, yes, but in practice it is impractical: - Batteries with a capacity of > 4500 mAh are usually of poor quality and degrade quickly. - The Redmi 4 charging controller is not optimized for increased capacity, which can lead to overheating. - Physically, a larger battery may not fit into the case or deform it.