Replacing the battery with Xiaomi Redmi 5A: a detailed guide with photos and videos

Xiaomi Redmi 5A

In this article, you will find a step-by-step guide to replacing your battery with a Redmi 5A with a photo, a list of tools you need, tips for choosing a new battery and answers to frequent questions, and how to verify the authenticity of your battery before buying and avoid typical disassembly errors.

⚠️ Important: Replacing the battery will void the warranty (if it's still valid). 5A For self-repair requires minimal electronics skills and accuracy - careless handling can damage plumes or motherboards.

Signs that it is time to change the battery

How do you know if the battery is the problem, not the software failure or the charging port damage?

🔋 Phone's running out of power. 2-3 hours with minimal load (social networks, instant messengers).
📉 The percentage of charge "jumps" (for example, from 50% immediately drops to 15%).
🔌 The device does not turn on without a charger connection, even if it shows 10-20% charge.
🔥 The battery swelled (seen on the raised back cover or screen).
⚡ The phone overheats during charging or work.
🛑 The device is switched off when 30-40% charge and not activated without recharging.

If you're watching at least 2-3 If you're looking at a sign from the list, it's likely that the battery is out of order. Before you replace it, check it with apps like AccuBattery (available on Google Play), and it'll show you the actual battery capacity, if it's smaller. 70% factory-wise (3000 MAAh for Redmi 5A), time to think about replacement.

⚠️ Warning: A bulging battery is dangerous, it can damage the screen or motherboard, and in rare cases, it can ignite. If the phone body is deformed, don't delay replacing it.

📊 How long have you been using Xiaomi Redmi? 5A?

Less than a year.

1-2 years

2-3 years

More than 3 years

What battery to choose for Xiaomi Redmi 5A

The original Redmi 5A battery is BM43 and has a capacity of 3000 mAh. However, the market is full of fakes that can last for six months.

🔍 Buy only from trusted sellers (e.g. AliExpress rated 98%+, Beru, official Xiaomi stores).
🏷️ The original battery must have a hologram with the Xiaomi logo and serial number.
📦 A protective cover must be included (sometimes sold separately).
💰 The price of the original battery is from 800 to 1500 rubles (2026) counterfeits cost less than 600 rubles.

Here is a table with the tested battery models for the Redmi 5A:

Model battery model	Capacity	Manufacturer	Average price (2026)	Features
BM43 (original)	3,000 mAh	Xiaomi/ATL	1200–1500 ₽	Hologram, serial number, protective case
HYB-BM43	3200 mAh	HongYang	900–1100 ₽	Increased capacity, good reviews
ZOP-BM43	3,000 mAh	ZOP Power	700–900 ₽	Budget option, average quality
Baseus BM43	3100 mAh	Baseus	1300–1600 ₽	Premium quality, long service life

⚠️ Warning: Avoid batteries with a capacity of more than 3200 mAh – they may not fit into the case or damage the power controller.

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Check the reviews of the seller before you buy. On AliExpress, look for stores with a rating of at least 97% and orders from 1000+. The product description should include a photo of the battery with a hologram.

Required tools for replacement

To replace the battery with Xiaomi Redmi 5A, you will need:

🔧 Plastic blade (or mediator) - to detach the cover.
⚙️ Cross screwdriver (size) PH00 or PH0) — screw-off.
🧲 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 battery with protective cover.
🛠️ Suction (optional) - for screen removal.

If you don’t have experience disassembling phones, we recommend buying a smartphone repair kit (costs about 300-500 rubles on AliExpress or Ozon), which usually includes all the necessary tools.

Turn off the phone and remove it. SIM-map|Charge your phone to at least 30% (in case of testing)|Prepare a workplace with good lighting|Take photos of screws and plumes before disassembling|Wear an antistatic bracelet (optional)-->

Step-by-step instructions for replacing the battery

Now, to the process itself, follow the instructions carefully so that you don't damage your smartphone.

Step 1. Turn off the phone and remove the back cover

Turn off the Redmi 5A completely (press the power button and select "Switch off"). Then heat the back cover with a hairdryer (~60°C temperature) for 1-2 minutes, this will soften the glue. Gently tuck the lid with a plastic blade starting at the bottom edge (where the charging connector is).

Step 2. Unscrew the screws.

Under the lid, you'll see 10 screws (~3 mm in size) unscrew them with a cross screwdriver and fold them onto a magnetic mat to avoid confusion. Note that some screws may differ in length!

Step 3. Unplug the battery plume

Carefully raise the motherboard (without tearing it off!) and disconnect the battery connector with a plastic blade. It's at the top of the board andmarked as BATT. Don't pull the wires -- just behind the connector!

Step 4: Remove the old battery

The battery is glued to the body to remove it.

Put a plastic shoulder blade on the battery from any angle.
Carefully pull the black tape (traction strap) - it is glued to the bottom of the battery.
If the battery fails, drop the isopropyl alcohol under it - this will dissolve the glue.

Step 5: Install a new battery

Place the new battery in a protective case (if any) and glue it to a double-sided tape or a special glue B-7000. connect the plume to the motherboard and lock it.

Step 6. Get your phone together.

Make sure all the plumes are connected, and twist the screws in reverse order, close the back cover, pressing it slightly around the perimeter.

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Don't turn the phone on immediately after assembly! Wait 10-15 minutes for the glue under the battery to grab. Then charge the device to 100% and discharge to 0% - this calibrates the new battery.

Frequent Mistakes and How to Avoid Them

Even experienced technicians sometimes make mistakes when replacing batteries, and here are the most common ones and ways to prevent them:

🔌 Damage to the battery plume -- never pull the wires, just the connector! If the plume is off, it can be soldered, but it requires a soldering station.
🔧 Losing screws - use a magnetic mat or container with cells.Redmi screws 5A Very small and easily lost.
🔥 Overheating the battery with a hair dryer – do not heat the case for longer than 2 minutes and do not use a temperature above 70°C. It is better to repeat the heat than overheat.
📱 Incorrect installation of the case – if the battery case is set curved, it can shift and damage the screen when assembled.
⚡ Use of metal tools - never screw the battery with a screwdriver! Only a plastic or wooden blade.

⚠️ Note: If the phone does not turn on after replacement, check:

Is the battery plume connected to the motherboard?
Are the contacts on the connector damaged (possibly they need to be cleaned with alcohol).
Are all other plumes (especially the display and power buttons) installed correctly?

What if your phone doesn’t see a new battery?

If the phone does not charge after replacing or shows 0% charge, try: 1. Disconnect and reconnect the battery plume. 2. Hold the power button for 20-30 seconds (sometimes “reboot” the power controller helps). 3. Connect the charge and wait 10-15 minutes - sometimes the new battery begins to charge not immediately. 4. If nothing helps, the power controller on the motherboard may be damaged (diagnosis is required in the service center).

How much does it cost to replace a battery in a service center?

If you are not sure of your abilities, you should contact the service. Here are the approximate prices for replacing the Xiaomi Redmi 5A battery in 2026:

Type of service	Cost (with battery)	Cost (without battery)	Duration of repairs
Official Xiaomi service	1800–2500 ₽	800–1200 ₽	1-3 days
Informal service	1200–1800 ₽	500–800 ₽	1-2 hours
Self-sustaining replacement	800–1500 ₽ (battery)	—	30-60 minutes

Xiaomi's official service will give you an original battery, but it's more expensive to repair. Informal workshops often use quality analogues (such as HongYang or Baseus), but without a warranty. If you decide to change the battery yourself, the total cost will come out cheaper by 50-70%.

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Before you go to the service, call them and ask them what battery they're installing, and some of the workshops are saving and putting up cheap fakes that will last six months.

How to prolong the life of a new battery

To make the new battery last longer, follow these tips:

🔋 Don't discharge your phone to 0%. Optimal range is 20 to 80%.
⚡ Don't leave your phone on charge all night. Turn it off after 100%.
🌡️ Avoid overheating (do not play heavy games while charging).
📵 Use an original or certified charger (5V/2A).
🔄 Once 2-3 Calibrate the battery for a month: completely discharge the phone, then charge to 100% breaklessly.

We also recommend turning off the background activity of unnecessary applications. To do this, go to Settings → Battery → Battery Optimization and select “Limit background activity” for energy-intensive programs.

FAQ: Frequent questions about replacing the Redmi 5A battery

Can I replace the battery with a Redmi 5A with a capacity of 4000 mAh?

No, it's dangerous! The Redmi 5A power controller is designed for a maximum capacity of 3200 mAh. A larger battery can damage the motherboard or not fit into the case. The optimal option is the original 3000 mAh or a quality analogue of 3100-3200 mAh.

What to do if the phone is quickly discharged after replacement?

Possible causes: Bad contact of the battery plume - check if it is tightly connected. Poor battery - try to return it to the seller. Software failure - reset to factory settings (Settings → Additional → Recovery and Reset). Background processes - check battery consumption in Settings → Battery.

Do I need to put a new battery on?

Yes, you must! Without fixing, the battery can shift and damage the plumes or the screen. Use double-sided tape or B-7000 glue. Complete with the original battery, there's usually a protective case with adhesive base.

How to check if the battery is original?

The original Xiaomi Redmi 5A battery has: a hologram with the Xiaomi logo; a serial number that matches the number on the package; BM43 and a capacity of 3000 mAh; a protective case included; counterfeits often have blurry inscriptions, no hologram or serial number mismatch.

Can I replace the battery without a hairdryer?

Yes, but it's more complicated. You can use instead of a hair dryer: Hot water in a bag (attach to the lid for 1-2 minutes); Isopropyl alcohol - drop under the lid to dissolve the glue; a thin guitar mediator (if the lid is not glued too much); however, without heating, the risk of damaging the lid latches is higher.