Xiaomi Redmi Note 5
2018
Many users are afraid to disassemble their smartphone for fear of damaging it. However, replacing the battery with a Redmi Note 5 is a feasible task at home, if you follow the right instructions and use the right tools. In this article, we will discuss the step-by-step process of replacing, show a video of the demonstration, tell you how to choose a quality battery, and warn about typical errors that can lead to a device failure.
If you’ve never repaired a smartphone before, don’t worry: the Redmi Note 5 is relatively simple and its battery isn’t glued to the ground like some other models.
Signs that the battery Xiaomi Redmi Note 5 needs to change
How do you know if the battery is the problem, not the software failure or the charger? Here are the key symptoms of a worn-out battery:
- 🔋 Phone's running out of power. 2-3 hours with moderate use (social networks, messengers, calls).
- 📉 The percentage of charge "jumps": for example, with 50% drops 15% or the phone is turned off when 20-30%.
- 🔌 The smartphone does not charge to 100% or only charges when it is off.
- 🌡️ The battery is very hot even with low-intensity use.
- ⚡ Sudden reboot or shutdown at low charge.
If at least 2-3 You know, you probably know the battery is worn out, and you can check it with apps like AccuBattery (available on Google Play), and it'll show you the actual capacity of the battery and how much it wears out, like if the original capacity of the Redmi Note is actually the same. 5 — 4000 mAh, and the app shows 2500-3000 It's time to think about replacing.
Other reasons should also be ruled out: check the charger and cable (better use the original Xiaomi accessories), clean the USB-Type C connector from dust and debris, and reset the phone to the factory settings (Settings → Additional → Recovery and Reset).
⚠️ Warning: If the phone is swollen (the body is deformed, the screen is "stepping away" from the frame), immediately turn it off and do not try to charge! The billowing battery may ignite.
What battery to choose for Xiaomi Redmi Note 5?
The original battery for the Redmi Note 5 is BM46 and has a capacity of 4000 mAh. However, there are many analogues on the market, and not all of them are of equal quality.
| Criteria | Recommendations | What to avoid |
|---|---|---|
| Capacity | 4000-4100 mAh (original or certified analogues) | Batteries with overcapacity (5000+ mAh) is a scam |
| Manufacturer | Original Xiaomi, ATL, Desay, Sunwoda | No-name brands without certificates (e.g., "SuperPower") |
| Cell type | Li-Polymer (Li-Po) | Li-Ion (Old Type, Less Safe) |
| Availability of the controller | There must be a built-in charge/discharge controller | Batteries without a controller or with an external module |
Where to buy it?
- 🛒 Xiaomi’s official service centers (quality guarantee, but more expensive).
- 🌍 Verified online stores: AliExpress (sellers with a rating of 98%+), Banggood, Gearbest.
- 🏬 Local parts stores (check reviews and certificates).
The average price of the original battery is 1500-2500 rubles, a qualitative analogue is 800-1500 rubles. Do not chase for cheap options: a low-quality battery can quickly fail or even damage the smartphone.
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Before buying, make sure that the package includes double-sided tape to lock the battery. If not, buy separately (for example, 3M 9448A).
Preparing for replacement: tools and safety
To replace the battery with the Redmi Note 5, you will need:
- 🔧 Plastic mediators (2-3 pc.) or special blades for disassembling smartphones.
- 🔩 Cross screwdriver (better magnetic, size) PH00).
- 🧲 Screen removal suction cup (you can use a suction cup for car windows).
- 🔥 Hair dryer or thermo-air station (for softening glue).
- 🧴 Isopropyl alcohol (90%+) clean-up.
- 📦 New battery and bilateral scotch.
Also prepare the workplace:
- 🪑 Work at a table with good lighting.
- ⚡ Use an antistatic bracelet or periodically touch a grounded metal object to remove static electricity.
- 📱 Turn off the phone and remove it. SIM-card and memory card (if installed).
⚠️ Warning: Do not use metal tools (knives, screwdrivers) to smear the case - this can damage the plumes or screen!
Turned off the phone and pulled it out. SIM-map|
Prepared all the tools and a new battery |
Cleared the workplace of garbage and liquids |
Wearing an antistatic bracelet or defusing statics|
I watched the video manual (see below)-->
Step-by-step: how to change the battery on Xiaomi Redmi Note 5
Now, to the process itself, follow the instructions in strict order to avoid errors.
Step 1: Removing the back cover
1. Heat the back cover of the phone around the perimeter with a hair dryer for 1-2 minutes (temperature ~60°C).
2. Suction the suction cup onto the bottom of the screen (near the USB-Type C connector) and pull up. If the lid doesn't lend itself, gently tuck it in with a plastic pickup.
3. Swipe the mediator around the perimeter, separating the lid from the body. Be careful - plumes pass under the lid!
Step 2: Turn off the plumes
1 Unscrew 6 screws that fix the metal plate over the battery (use the PH00 screwdriver).
2. Take the plate off carefully and disconnect the battery and display plumes with a plastic mediator. Don't pull the wires!
Step 3: Remove the old battery
1. Put a plastic blade on the battery on either side, and it's attached to double-sided tape.
2.If the battery fails, heat it with a hair dryer a little (do not overheat!).
3. Remove the battery by pulling a special black tape (if any).
Step 4: Installation of a new battery
1. Clear the place under the battery from glue residues with isopropyl alcohol.
2. glue a new double-sided tape to the case (not on the battery!).
3. Install a new battery, connect the plume and fix the metal plate with screws.
Step 5: Assembly of the phone
1. Connect the display plume and make sure all contacts fit tightly.
2. Set the back cover in place, starting with the top, and press it around the perimeter.
3. Turn on the phone and check the charging.
If the phone does not turn on after assembly, check:
- 🔌 Connecting the battery plume (it may not be fully inserted).
- 🔋 Polarity of the battery (contacts must match).
- 🔧 Tighten the screws (do not pull over!).
What if the phone doesn’t turn on after replacement?
Video Instructions: Replace the battery with Redmi Note 5
For clarity, we recommend watching a video with a step-by-step demonstration of the process.
- 🎥 Replacement of the Xiaomi Redmi Note 5 battery - step-by-step video (channel "Phone Repair", 12 minutes).
- 🎥 How to disassemble Redmi Note 5 and change battery (Xiaomi Service channel, 8 minutes).
- 🎥 Comparison of original and non-original battery for Redmi Note 5 (Gadget Mania channel, 5 minutes).
Notice the following:
- 🔍 How the author separates the back cover (whether the hair dryer uses, from which side it starts).
- 🛠️ What tools are used to remove the battery.
- ⚡ How to check the performance after replacement.
If you’re disassembling a smartphone for the first time, it’s best to watch the entire video first, and then repeat the actions in parallel.
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Don’t miss the post-assembly phase of checking plumes! Most of the problems with a broken phone after a battery change are due to poor contact with the battery plume or display.
Common Mistakes When Replacing a Battery and How to Avoid Them
Even experienced users sometimes make mistakes that cause their phones to break down.
| Mistake. | Effects of consequences | How to avoid |
|---|---|---|
| Use of metal tools | Damage to plumes, scratches on the body, short circuit | Use only plastic mediators. |
| Dryer overheating | Bloating or ignition of the battery | Heat for no longer than 2 minutes, the temperature is not higher than 60 ° C |
| Incorrect connection of the plume | The phone is not switched on or charged | Check the polarity and density of contact |
| Use of poor quality glue | The battery goes off, the phone warms up. | Use the original two-way Scotch |
Another common problem is that the fingerprint plume is damaged, and on the Redmi Note 5, it's under the battery, and it's easy to get in the way of a careless battery extraction, and if the scanner stops working after the replacement, it's likely the plume is severed, and you'll have to take the phone to the service center.
⚠️ Warning: If you see the battery swelling (it will bubble or deform the body), do not try to pierce or bend it! This can lead to fire. Carefully remove the battery and dispose of it at a special reception point.
What to do after replacing the battery?
Yes, the phone is packed and turned on, but to make the new battery last longer, follow these tips:
- 🔄 Battery calibration: Completely discharge the phone (before switching off), then charge to 100% No breaks. 2-3 once.
- 📴 Avoid overheating: Do not use your phone while charging for games or heavy tasks.
- 🔌 Use original RAM: High-current chargers (like Quick Charge 3.0) shorten battery life.
- 📱 Disable unnecessary functions: GPS, NFC, Bluetooth and background apps drain battery.
We also recommend turning off MIUI optimization for the battery:
- Go to Settings → Battery and performance.
- Select Settings → Optimizing the battery.
- Turn off optimization for frequently used applications (such as instant messengers).
The average life of a new battery is 2-3 years if it is properly operated, and if it drops again after six months, you may have bought a poor battery or made a mistake in installing it.