Replacement of the battery on Xiaomi Redmi 5 Note: detailed instructions with photos and videos

Xiaomi Redmi 5 Note

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Many users are afraid to disassemble their smartphone for fear of damaging the plumes or display. However, with the right approach and the necessary tools, you can replace the battery with a Redmi 5 Note at home in 30-40 minutes. In this article, we will discuss the entire process in detail, from fault diagnosis to device assembly, and also tell you how to choose a quality battery and avoid typical errors.

If you've never repaired a smartphone before, don't worry -- the Redmi 5 Note is a device with medium disassembly complexity, and its body is glued together, but it doesn't have hidden latches or brittle elements (unlike the flagship models with a frameless design), the main thing is to act carefully and follow the instructions.

How to know if the battery is time to change: 5 key signs

Before you start disassembling, make sure that the problem is the battery, and here are the main symptoms of wear and tear:

• 🔋 Phone's running out of power. 2-3 hours with moderate use (social networks, messengers).
• 📉 The percentage of charge “jumps”: for example, from 40% immediately drops to 15% after a reboot.
• ⚡ The device is switched off when 20-30% although it had previously been used before 5-10%.
• 🔌 Charging is extremely slow or interrupted (especially if the cable and power supply are serviceable).
• 🌡️ The body heats up strongly in the battery area even without loading.

If you know at least 2-3 items from the list, the probability of battery wear is 90%, and for accurate diagnosis you can use applications like AccuBattery (showing real capacity) or AIDA64 (showing the number of charging cycles).

⚠️ Note: If the phone suddenly turns off 50-60% If you're charging, it might indicate not only that the battery is wearing out, but that the power controller is not working properly.

It's also worth checking if the battery is swelling. To do this, put your smartphone on a flat surface and slightly press the back cover in the battery area. If the case is "playing" or there are gaps between the display and the frame, this is a sure sign of battery bloating, which is dangerous for further use.

What battery to choose for Xiaomi Redmi 5 Note: original vs analogues

The original battery for the Redmi 5 Note is marked BM47 and a nominal capacity of 4000 mAh. However, on the market there are both branded batteries from Xiaomi and analogues from third-party manufacturers.

When buying, pay attention to:

• 📦 Packaging: Xiaomi’s original batteries come in a white box with a hologram and a sleek look. QR-code.
• 🔍 Marking: The battery must have a model on it (BM47), Capacity (4000 mAh) and production date.
• 🛡️ Reliable sellers give a minimum of 6 months warranty on analogues.

💡

Before buying, check the reviews of the seller on the site (AliExpress, Wildberries, Yandex Market). Often under the guise of original batteries sell fakes with a capacity of 2000-2500 mAh, which will last six months.

Battery Replacement Tools: What You Need

To disassemble the Xiaomi Redmi 5 Note and replace the battery, you will need the following set of tools:

• 🔧 Plastic blades (mediators) - for separation of the back cover and the battery.
• ⚒️ The screwdriver (PH00) — screw-off.
• 🔥 Hair dryer or thermoair station - for softening the glue (optional, but simplifies the process).
• 🧲 Magnetic mat or container – so as not to lose screws.
• 🩹 Scotch or bilateral Scotch – to fix the new battery.
• 🔋 Battery tester (optional) – to check the voltage of the new battery (should be ~3.8-4.0).

If you don't have a hair dryer, you can do without it, but it will take longer to disassemble, and we also recommend using an antistatic bracelet or periodically touching grounded metal objects to avoid damage to the board by static electricity.

Step-by-step: how to disassemble Xiaomi Redmi 5 Note and replace the battery

Before starting work, turn off the phone completely and remove it. SIM-A memory card, and make sure you have enough light and space on your desk.

Turn off the phone and take out the tray. SIM-map|

Backup the data (in case of damage to the fee)|

Prepare the workplace: clean surface, good lighting |

Charge the new battery before 30-50% (unless it's in the factory packaging)-->

Step 1: Removing the back cover

The Redmi 5 Note's back panel is glued around the perimeter to remove it.

1. Heat the hair dryer of the edge of the body (temperature) ~60–70°C) for 1-2 minutes. This will soften the glue.
2. Insert the plastic blade into the gap between the lid and the frame (start at the bottom edge where the charging connector is).
3. Carefully drive the shoulder blade around the perimeter, separating the lid. Don't make excessive efforts - there are plumes inside!

When you take the lid off, you'll see the battery, the motherboard and the plumes. Don't pull the lid abruptly, it's connected to the board by a flexible fingerprint scanner plume.

Step 2: Shutting off the battery

Before proceeding, be sure to disconnect the battery:

1. Unscrew 4 screws that fix the metal plate over the battery connector.
2. Carefully slap the connector with a plastic spatula and disconnect it from the board.

⚠️ Warning: If you don't turn off the battery before further disassembly, you risk closing the board, which will lead to irreversible damage to the smartphone!

Step 3: Remove the old battery

The battery in the Redmi 5 Note is glued to the body to get it.

1. Put a plastic blade on the battery from any edge and pull it up. The glue is pretty strong, so proceed carefully.
2. If the battery does not respond, you can slightly heat it with a hair dryer (not higher than 50 ° C!) or drop isopropyl alcohol under it - it dissolves the glue.
3. Once removed, inspect the battery: if it's bloated, don't puncture it or throw it in the trash, it's fire hazard! Take it to the battery reception center for recycling.

Step 4: Installation of a new battery

Before installing, check the voltage of the new battery with a tester (should be ~3.8V).

1. Remove the protective film with the adhesive side of the battery (if any).
2. Stick the battery to the old one, slightly pressing the edges.
3. Connect the battery connector to the board and fix the metal plate with screws.

Step 5: Assembly of the phone

Collect the phone in reverse order:

1. Connect the fingerprint scanner plume to the board.
2. Put the back cover in place and press it around the perimeter (the glue will catch itself over time).
3. Put the screws in (do not pull!)
4. Put the tray in. SIM-cards and turn on the phone.

Once turned on, let the phone run for 10-15 minutes, then check the charging and discharge. If all is well, calibrate the battery: fully discharge the phone, then charge to 100% without interruption.

(1) Whether the battery connector is properly connected.

(2) Whether the plumes are damaged during disassembly.

(3) Whether the new battery is charged (minimum 20%).

If the problem persists, the board or power controller may have been damaged.-->

Common Mistakes When Replacing a Battery and How to Avoid Them

Even with careful disassembly, beginners often make mistakes that can knock the phone out of order.

• 🔌 Forgetting to turn off the battery before work → short-circuit.
• 🔧 Tug the screws. → thread-damage.
• 🧴 Use superglue instead of bilateral scotch → The battery will not be able to be removed.
• 📱 The fingerprint scanner plume is damaged. → print stops working.
• 🔥 Dry-dryer battery overheating → fire-risk.

To avoid problems:

• Use only plastic or wooden tools – metal tools can close the contacts.
• Do not apply force when the lid is separated - it is better to heat the glue again.
• If the plume is broken, it can be temporarily fixed with tape, but it is better to replace it.

How long will the new battery last and how to extend its life

The life of the new battery depends on its type and operating conditions:

• The original battery is 2-3 years (500-800 charging cycles).
• The qualitative analogue is 1-2 years (300-500 cycles).
• Cheap analogue - 6-12 months (100-200 cycles).

To extend the life of the battery:

• 🔋 Avoid deep discharge (charge your phone at 10-20% charge).
• ⚡ Do not use fast charging all the time – it speeds up wear.
• 🌡️ Don’t leave your phone in the sun or in your car – overheating kills your battery.
• 📵 Turn off background processes (Geekbench, games) when charging.

We also recommend calibrating the battery after replacement:

1. Completely discharge the phone before turning off.
2. Charge up to 100% without interruptions (preferably the original RAM).
3. Repeat the process 2-3 times.

Video instructions and additional materials

If you are better at understanding the information visually, we recommend watching the video disassembly of Xiaomi Redmi 5 Note:

Video 1: Complete battery disassembly and replacement (in English, but with a clear demonstration):

YouTube: "Xiaomi Redmi Note 5 Battery Replacement Guide"

Video 2: Russian instruction from the channel "Phone Repair":

Replacement of Xiaomi Redmi 5 Note (whyred) battery with your own hands

Also useful resources:

• 📄 Official iFixit Guide (with each step photo).
• 🛠️ The subject is 4PDA battery-swapping.

FAQ: Frequent questions about replacing the battery with the Redmi 5 Note