How to change the battery Xiaomi Redmi 5A: Detailed guide with photo and video

Xiaomi Redmi 5A — One of the most popular budget smartphones from the Chinese brand, released in the 2017 Despite its modest performance, it's still in use today because of its reliability and simplicity, but over time, even the most enduring battery loses capacity: the phone starts to run out in a few hours, turns off when you're in a state of emergency. 20-30% charge or refuses to be activated without connection to charging.

If you have a Redmi. 5A You don't have to rush to landfill, because replacing the battery can give it a second life. In this article, we will discuss how to change the battery on your own Xiaomi Redmi. 5A, You'll learn which battery to choose, which tools you'll need, how to disassemble your phone properly and avoid common errors. And if you're afraid of damaging your device, at the end of this article, there's a video tutorial that shows you how to do it.

Average replacement time for a beginner — 30-45 minutes, if you have experience, until 15 The cost of a new battery varies from 500 before 1500 And the cost of this is based on the capacity and the manufacturer, and for comparison, the service center will take the same job. 1000-2000 So self-repairing is not only an interesting experience, but also a real savings!

1.Indications that the Redmi battery 5A change

Before you start the screwdriver, make sure the battery is the problem, and here are the key symptoms of a dying battery:

• 🔋 The phone's running out of power. 2-3 One hour with moderate use (previously kept the day).
• 🔌 When connecting charging, the percentage of charge jumps (for example, from 10% immediately to 50%).
• ⚡ Redmi 5A switch off 20-30% The indicator is normal, although the indicator shows a normal level.
• 🔥 The phone body is noticeably heated in the battery area (especially when charging).
• 🛑 The device does not turn on without connecting to the charger, even if “in theory” there is a charge.
• 📉 Settings menu → Battery discharge schedule looks uneven, with sharp jumps.

If at least 2-3 The item on your phone list is probably worn out, but check the software reasons before you replace it:

1. Update your firmware to the latest version (path: Settings → About phone → System Update).
2. Check the background processes: Some apps (like Facebook or TikTok) can eat the battery.
3. Reset the settings to factory settings (Settings → Additional → Recovery and Reset).

If things haven't improved after these manipulations, welcome to the world of hardware repair — 2-3 year-end (300-500 Considering that Redmi 5A came out 2017-The battery has long been running out of life.

2 Which battery to choose for Xiaomi Redmi 5A

Original battery in Redmi 5A has a capacity of 3000 mAh and marking BM43 (or BM44 When buying a replacement, pay attention to the:

• 🔍 Capacity: You can take the battery on 3500-4000 mAh (manufacturers promise) +20-30% time-work).
• 🏭 Manufacturer: original batteries from Xiaomi (article) MBJ405650) or proven brands - Baseus, Remax, ZMI.
• 📦 Set: the set should be two adhesive strips for fixing the battery and insulating film.
• 🔄 Type of connector: must match the original (3 contacts: +, – thermistor).

Where to buy it?

⚠️ Avoid batteries that say "Super Capacity" 5000mAh» — It's a hoax. The maximum real capacity for Redmi. 5A — 4000 mAh, and then with reservations (such batteries are thicker than the original and may not fit into the case), also make sure that the battery has a hologram or a protective sticker - this reduces the risk of counterfeiting.

💡

Before you buy, ask the seller to send a photo of the battery from both sides. Xiaomi’s original battery has clear labeling, smooth seams and a uniform color board.

Battery replacement tools

To disassemble the Redmi 5A and replace the battery, you will need:

• 🔧 Plastic mediator (or guitar mediator) – to separate the back cover.
• ⚙️ Cross screwdriver (size) PH00 or PH0) — screw-off.
• 🧲 Magnetic mat or container – to avoid losing small details.
• 🔥 Hair dryer (or thermal air station) - to soften the glue under the battery.
• 📏 Suction (optional) - helps to suction the lid.
• 🧴 Isopropyl alcohol (90%+) — glue-residue.
• 🩹 Gloves – batteries contain toxic substances.

If there is no hair dryer, you can do with hot water in the bag (attach it to the back cover on the back cover). 2-3 It's less safe, but it's also a plastic blade that can be used to gently tweak the plumes.

⚠️ Attention! Don't use metal tools (knives, screwdrivers) to separate the lid, they will scratch the body and can damage the plumes. If you don't have a plastic mediator, take a bank card or a thin plastic ruler.

Buy a new battery with adhesive stripes|

Prepare the workplace (clean table, good lighting)|

Charge the phone before 30-50% (in case something goes wrong)|

Make a backup copy of data (settings, photos, contacts)|

Turn off the phone and remove it. SIM-map + memory-card-->

4. Step-by-step instruction: how to disassemble Redmi 5A and change the battery

Now, to the most critical stage, follow the instructions in strict order to avoid damaging your phone.

Step 1: Removing the back cover

1. Turn off Redmi. 5A and place it with the screen down on a soft surface (such as a napkin).

2. Heat the hair dryer around the perimeter during 1-2 minutes (temperature) ~60°C. This will soften the glue.

3. Insert a plastic mediator into the gap between the lid and the body (start at the lower left corner where the speaker and microUSB connector are located).

4 Carefully drive the mediator around the perimeter, separating the lid. If you feel resistance, warm up the place again with a hairdryer.

⚠️ Attention! Don't put too much effort into it, the fingerprint scanner plume passes under the lid (if it breaks, the scanner will stop working).

Step 2: Shutting off the battery

1. Once you remove the lid, you'll see the battery covered with black film, unscrew the 5 screws with a cross screwdriver (they fix the metal plate above the battery).

2. Carefully slap a plastic scapula on the battery connector (the white connector at the top of the board) and unplug it. Use the mediator, not the nails!

3. Check the voltage at the battery contacts with a multimeter (should be 3.7-4.2 V). If less than 3.5 V, the battery is severely discharged, and it is better not to turn it off for a long time (protection may work).

Step 3: Remove the old battery

1. Pick up adhesive strips under the battery (usually black). If the strips break, put a plastic blade on the side of the battery.

2. If the battery is too tight, warm it up again with a hair dryer (not higher than 70).°C!) Do not use metal tools - risk puncturing the battery!

3. After removing the battery, clean the installation site of glue residues with isopropyl alcohol and a wipe.

Step 4: Installation of a new battery

1. Remove the protective film from the new battery and glue it to the place of the old one (adhesive strips should be at the bottom).

2. Connect the battery connector to the motherboard. Make sure the connector sits tight -- sometimes it bounces.

3. Twistle back the metal plate and the screws. Don't pull them over!

4. Run a test: connect your phone to charge (not turning it on) If the charge indicator appears on the screen, it's okay.

Step 5: Assembly of the phone

1. Make sure all plumes (fingerprint scanners, speaker, cameras) are connected correctly.

2. Stick the back cover. You can use double-sided perimeter tape to make sure you're safe.

3. Turn on the phone and check:

• 🔋 Charging is normal (without percentage jumps).
• 📞 Sound, microphone, fingerprint scanner working.
• 📶 No problems with network or Wi-Fi.

(1) The density of the battery socket connection.

(2) Integrity of the supply plume (may be damaged during disassembly).

3) Charge in a new battery (sometimes discharged).-->

5.Typical battery replacement errors and how to avoid them

Even with care, you can make mistakes that will cause your phone to break down.

• 🔌 The damage to the fingerprint scanner plume occurs when you pull the lid too hard. Solution: heat up the hair dryer longer and use a thin mediator.
• 🔥 Battery overheating when heated with a hairdryer. Solution: Keep the hairdryer at a distance. 10-15 Not to warm one point longer. 10 seconds.
• 🔧 Loss of screws at Redmi 5A They're small and easily lost. Solution: use a magnetic mat or a container.
• 📉 Wrong calibration of the battery after replacement. Solution: fully discharge and charge the phone 2-3 once.
• 💥 Short circuit when you plug in the battery. Solution: check the polarity (+ and -) before connection.

If the phone is quickly discharged after replacement, it is possible:

• You bought a fake battery (check the capacity with AccuBattery).
• Badly glued a new battery (it "walks" inside the case).
• Damaged the power controller on the motherboard (needs diagnosis).

💡

To check the real capacity of the new battery, install the application CPU-Z or AIDA64. In the Battery section, the current capacity in mAh will be indicated. If it is much lower than the declared one, the battery is defective.

Calibration of the battery after replacement

The new battery may be showing an incorrect charge level for the first few days, and to "train" the power controller, calibrate:

1. Completely discharge the phone before automatically shutting down.
2. Connect to charging and wait 100% (do not turn on your phone while charging!).
3. Turn off the charger, turn on the phone and again wait for a full discharge.
4. Repeat the charging-discharge cycles 2-3 once.

After that, the charge indicator will be displayed more accurately.

• 🔋 Use the original charger (5V/1A or 5V/2A).
• 🔌 Do not leave your phone on charge overnight.
• 📉 Avoiding discharge below 10% – this reduces battery life.

If after calibration the phone still discharges quickly, check the background processes in the battery settings (Settings) → Battery → Battery use. Sometimes faulty applications are to blame, not the battery itself.

7. Alternative methods: battery replacement without disassembly

If you are afraid to take your phone apart or are unsure of your abilities, there are two options:

1. Contact the service center

Cost of battery replacement in official and unofficial services:

⚠️ Attention! In informal services, they often put low-cost batteries with low capacity. Before replacing, ask them to show the battery and check its labeling.

2. Power Bank as a temporary solution

If the battery replacement is delayed, you can use an external battery (power bank) with the function OTG-- For that, it's charging:

1. Buy it. OTG-cable (such as microUSB) → USB Type-A).
2. Connect the power bank to the phone via cable.
3. In the settings, turn on OTG-charging (if there is such a point).

This will allow you to use the phone even with a dead battery, but carrying a power bank is not always convenient.

8. Frequently Asked Questions (FAQ)