Xiaomi Redmi 4X
Yes.
Many users are afraid to disassemble a smartphone because of the risk of damaging the plumes or display, but in practice, replacing the battery with a Redmi 4X is one of the easiest procedures among Xiaomi devices. The main thing is to prepare correctly, choose a quality battery and follow the instructions. In this article, you will find a step-by-step photo guide, tips for choosing a battery, a list of necessary tools and answers to frequent questions.
If your Redmi 4X is not holding the charge as it used to be, don't rush to buy a new phone. It's 3-5 times cheaper to replace the battery, and if you do it right, it'll last for a few more years. Let's figure out how to do it safely and without errors.
Signs that Xiaomi Redmi 4X battery needs to be changed
How do you know if the battery is the problem, not the software failure or the charger? Here are the key symptoms of a dying battery:
- 🔋 The smartphone discharges in 2-3 hours with minimal load (social networks, instant messengers).
- 📉 The percentage of charge “jumps”: for example, from 40% immediately drops to 15% after a reboot.
- 🔌 The phone turns off at 20-30% charge and is turned on only from charging.
- 📱 The back cover has swelled or started to move away from the body (it's dangerous!).
- ⚡ Charging takes too long (more than 4-5 hours to 100%).
- 🔥 The phone gets very hot when charging or playing.
If you know at least 2-3 items from the list, the battery is probably worn out, and you can check it with applications like AccuBattery or CPU-Z, they will show the actual capacity of the battery. For example, if instead of the declared 4100 mAh, the application shows 2500-3000 mAh, this is a clear signal to replace.
Important! A bloated battery is not only an inconvenience, it is a danger. Lithium-ion batteries can ignite or explode when deformed (albeit with a low probability). If the phone cover is markedly raised, do not delay the replacement!
What battery to choose for Xiaomi Redmi 4X: original vs analogues
The battery quality not only determines the life of the smartphone, but also its safety.
- The original Xiaomi battery (article MB-BL4100) Pros: guaranteed quality, full compatibility, long life. Cons: high price (1500-2500 ₽) and the risk of running into a fake.
- Certified analogues (e.g., Baseus, Remax, Patrona) Pros: price 2 times lower than the original (800-1200 ₽), good quality with proven brands. Cons: may be slightly inferior in capacity.
- Cheap uncertified batteries (with AliExpress, unknown sellers) Pros: price from 300 ₽ Cons: the risk of bloating, rapid wear and tear or even fire.
Where to buy? Official Xiaomi stores (mi.com, Mi Store), proven online stores like the Messenger, M. Video or DNS. Avoid shopping with hands - a great chance to get a used battery.
How to distinguish the original from the fake?
- 🏷️ Hologram sticker and serial number (can be checked on Xiaomi website).
- 📦 Packaging with brand logo and protective stickers.
- ⚖️ Battery weight – the original weighs about 45-50g, counterfeiting is often lighter.
- 🔍 Battery contacts shall be smooth, without any trace of soldering.
If you choose an analogue, pay attention to the capacity: it should be at least 4000 mAh. Batteries with the declared 5000 mAh and higher for Redmi 4X - a scam!
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Check the seller reviews before you buy. On AliExpress, look for stores with a rating of at least 98% and orders from 1000+.
Required tools for battery replacement
To disassemble the Xiaomi Redmi 4X and change the battery, you will need:
| Tool. | What do you need? | Where to buy / price |
|---|---|---|
| Plastic spatula (mediator) | For careful putting of the cover and disconnecting of plumes | AliExpress, Fix Price (50-150 ₽) |
| Screwdriver cross (PH00) | For unscrewing the hull screws | Any tool store (100-300 ₽) |
| Screen suction cup | Helps remove the front panel (optional) | AliExpress, Ozone (80-200 ₽) |
| Tweezers | To work with small details and plumes | Any hardware store (50-150 ₽) |
| Isopropyl alcohol (70%+) | To clean contacts and remove glue | Pharmacy, Leroy Merlin (100-300 ₽) |
Also prepare:
- 📱 Fen (to soften the glue if the lid fails).
- 🧲 Magnetic mat or screw container (so as not to lose).
- 📸 Smartphone for photography (to remember the location of details).
Attention! Do not use metal blades or knives - they can damage the plumes or body. Also avoid too much heat with a hairdryer: temperatures above 60 ° C can damage the screen or battery.
Turn off the phone and remove the SIM- card | Backup the data | Charge the phone to 30-50% (for safety) | Prepare the workplace with good lighting | Check for all tools-->
Step-by-step: how to disassemble Xiaomi Redmi 4X and replace the battery
Now, to the most critical stage, follow the instructions carefully so that you do not damage your smartphone.
Step 1: Turning off and preparing the phone
Step 2. Remove the back cover
- Heat the edge of the back cover with a hair dryer (30-40 seconds) - this will soften the glue.
- Insert a plastic blade into the gap between the lid and the body (start at the bottom corner where the charging connector is).
- Carefully drive the shoulder blade around the perimeter, separating the lid.
- Remove the lid and put it aside.
Step 3: Unscrew screws and disconnect plumes
- 🔧 Unscrew all the screws (the 10-12 pieces) with a screwdriver PH00. Fold them into a magnetic container.
- 🖱️ Carefully disconnect the battery plumes, display and power buttons. Use a plastic shoulder blade to keep the contacts safe.
- 📷 Take a picture of the plumes so you can connect them properly.
Step 4: Remove the old battery
The battery in the Redmi 4X 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, don't use metal tools!
Step 5: Installation of a new battery
- 🔄 Check that the new battery is the same size and location of the contacts.
- 📍 Stick the battery to double-sided tape (comes with) or use the original glue.
- 🔌 Connect the battery plume to the motherboard.
Step 6: Assembly of the phone
Collect your smartphone in reverse order:
- Connect all the plumes (display, buttons, speaker).
- Turn the screws (do not pull!).
- Set the back cover and press it to fix.
- Turn on your phone and check your workability.
If the phone does not turn on after assembly:
- ❌ Check if the plumes are connected correctly.
- ❌ Make sure the battery is connected to the motherboard.
- ❌ Try charging the phone 10-15 minutes - sometimes the new battery is drained.
What if your phone doesn’t see a new battery?
Frequent battery replacement errors and how to avoid them
Even with care, you can make mistakes that will cause your phone to break, and here are the most common ones:
- 🔧 Twisted screws -- they can damage the thread or the motherboard. Solution: twist the screws without effort, to a light stop.
- 🖱️ Damaged plumes -- often break when sloppy, solution: just pop the plumes with a plastic blade, don't pull the wires.
- 🔥 Short circuit -- if a metal tool touches the contacts of the battery, solution: use a dielectric blade and operate on a non-conductive surface.
- 📱 Incorrect battery installation - if the battery is lying curved, it can damage the screen when assembled. Solution: Check the flatness of the installation before fixing the lid.
Another common problem is that the phone doesn't turn on after it's replaced.
- 🔌 The battery is not connected to the motherboard (check the plume).
- 🔋 New battery is completely discharged (plug in 10-15 minutes).
- 🛠️ Power controller damaged (service diagnostics required)
Attention! If you smell burning or see smoke when you first charge a new battery, immediately disconnect the phone from the network and do not use it - this is a sign of a defective battery. Return it to the seller and demand a replacement.
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If you are not sure of your abilities, you should contact the service center. The cost of replacing the battery in official Xiaomi services is about 1000-1500 ₽ (excluding the price of the battery).
How to prolong the life of a new battery: tips for operation
To make the new battery last longer, follow these guidelines:
- 🔌 Avoid full discharge - charge the phone at 15-20% charge.
- ⚡ Do not leave on overnight charging - optimally charge to 80-90%.
- 🌡️ Don't overheat your phone -- don't play heavy games while charging.
- 📵 Use an original or certified charger (current 2A, voltage 5V).
- 🔄 Once in 2-3 month, calibrate: completely discharge and charge the phone to 100%.
It is also worth turning off background processes that quickly drain the battery:
- 📡 Turn off GPS, Bluetooth and Wi-Fi when they are not needed.
- 🔍 Limit application background activity in settings (Settings → Battery → Optimization).
- 🌙 Use a dark theme (on AMOLED- screens saves charge).
Complying with these rules, the new battery will last 3-4 years without a noticeable loss of capacity.
How much does it cost to replace a battery: a comparison with a service center
The price of a battery replacement depends on where and how you do it:
| Replacement option | Cost of battery cost | Cost of work | Totally. | Pluses | Cons |
|---|---|---|---|---|---|
| Self-directed (original) | 1500-2500 ₽ | 0 ₽ | 1500-2500 ₽ | Savings, quality control | Risk of damaging the phone |
| Independently (analogue) | 800-1200 ₽ | 0 ₽ | 800-1200 ₽ | Minimum price | Risk of running into a fake |
| Official Xiaomi service | 1500-2500 ₽ | 1000-1500 ₽ | 2500-4000 ₽ | Warranty, original spare parts | Expensive, long (2-5 days) |
| Informal service | 800-1500 ₽ | 500-1000 ₽ | 1300-2500 ₽ | Fast (1-2 hours), cheaper | Risk of poor quality work |
The bottom line is that if you're confident in your abilities, it's cheaper to replace yourself, and if you're in doubt, you should go to a trusted service.
Tip: Before visiting the service center, clarify:
- 🔧 Do they use original parts?
- 📝 Whether a work guarantee is given (optimal 3-6 months).
- ⏱️ How long will it take to repair it?