Xiaomi Redmi Note 10 5G Battery Replacement (BN5A) – Also for Redmi Note 10T 5G & Poco M3 Pro 5G

If your phone is draining quickly, shutting down randomly, or overheating, it may be time to replace the battery. In this detailed DIY repair guide, we’ll show you how to replace the BN5A battery in:

• Xiaomi Redmi Note 10 5G
• Redmi Note 10T 5G
• Poco M3 Pro 5G

These three smartphones share a similar internal structure and battery model, making this guide compatible with all of them.

Replacing the battery can restore battery life, improve performance stability, and extend the lifespan of your device without needing to upgrade to a new phone.

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Repair Overview

Device Type: Smartphone
Repair Type: Internal Battery Replacement (BN5A)

Repair Difficulty: ⭐⭐⭐⭐⭐☆☆☆☆☆ (5/10 – Moderate)

⏱ Estimated Repair Time: 45 – 60 Minutes

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Reasons for Battery Replacement

You may need to replace the battery if you notice:

• Fast battery drain even with light usage
• Phone shutting down at 20–30%
• Overheating during charging
• Swollen battery pushing the back cover
• Device not turning on unless plugged in
• Battery health significantly reduced

Replacing the battery is often more cost-effective than replacing the entire device.

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Before You Begin

Compatibility and Model Numbers

• Xiaomi Redmi Note 10 5G 
• POCO M3 Pro 5G
• Xiaomi Redmi Note 10T 5G

Model Numbers : M2103K19G, M2103K19C, M2103K19I, M2103K19Y, M2103K19PG, M2103K19PI, M2103K19PY

Tools Required

• Mobile phone heating pad or hairdryer/heat gun
• Plastic pry tool / card pry
• Suction cups
• Phillips #00/#000 screwdrivers
• Torx (T2/T3/T4) screwdrivers (Depends on the Region)
• Flathead screwdriver
• Tweezers (for connectors)
• B7000 glue or double-sided adhesive (for back cover)
• Rubber bands or bonding clips to secure the back cover

How to Find Tools and Parts

• Heating pad – https://amzn.to/3H0tHzJ
• Portable Heat Gun – https://amzn.to/4mszih1
• Clamps https://amzn.to/3GYJT4w
• STREBITO 142 Piece Repair Tool Kit https://amzn.to/3UO1jUx
• Glue | Adhesive https://amzn.to/46exVxe
• Compatible Parts –
  • Battery – https://amzn.to/3ZIHCQv
  • Screen – https://amzn.to/40hCF1g
  • Other Parts – https://amzn.to/4rVnyq4
• Silicone Work Repair Mat https://amzn.to/45Emz5l

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• Best Premium Case & Protector https://amzn.to/4kMS9UI
• New Redmi Phone are in Clearance https://amzn.to/4aHSVNX

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🔋 Step-by-Step BN5A Battery Replacement

Step 1: Power Off the Device

Turn off the phone completely before starting the repair to prevent short circuits.

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Step 2: Heat the Back Cover

The back cover is sealed with adhesive.

• Place the phone on a heating pad.
• Select the mobile phone heating option.
• Heat gently around the rear edges until the adhesive softens.

Alternatively, use a heat gun or hairdryer (avoid overheating one area).

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Step 3: Remove the Back Cover

• Use a suction cup to create a small gap between the frame and back cover.
• Insert a plastic card pry tool into the gap.
• Slide around the edges to cut through the adhesive.

Carefully lift and remove the back cover.

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Step 4: Remove the Camera Lens Frame

• Undo 4 screws securing the camera lens cover.
• Use a pry tool to gently lift and remove the camera lens frame.

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Step 5: Remove SIM Tray & Disconnect Fingerprint

• Remove the SIM tray.
• Disconnect the fingerprint sensor flex cable carefully.

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Step 6: Remove the Mid-Frame

• Undo 13 screws from the top and bottom sections.
• Use a plastic pry tool to disengage the plastic clips around the frame.
• Gently lift and remove the mid-frame.

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Step 7: Disconnect the Battery

Before touching the battery:

• Disconnect the battery connector from the motherboard.

This prevents accidental short circuits.

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Step 8: Remove the Old Battery

• Loosen both adhesive tabs at the top of the battery.
• Gently pull the adhesive strips using fingers or tweezers.
• Slowly lift and remove the battery.

⚠ Never bend or puncture the battery.

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Step 9: Install the New BN5A Battery

• Place new adhesive in the battery compartment.
• Position the new battery correctly.
• Reconnect the battery flex cable.

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Step 10: Reassemble the Device

1. Reinstall the mid-frame (13 screws).
2. Secure the fingerprint connector.
3. Insert the SIM tray.
4. Install the camera lens frame (4 screws).

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Step 11: Reseal the Back Cover

• Apply B7000 glue or new double-sided adhesive if needed.
• Align the back cover properly.
• Use bonding clips or rubber bands.
• Leave secured for at least 30–60 minutes.

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Frequently Asked Questions (FAQ)

Q1: Is the BN5A battery the same for all three models?

Yes. The BN5A battery is compatible with Redmi Note 10 5G, Note 10T 5G, and Poco M3 Pro 5G.

Q2: Will replacing the battery delete my data?

No. Battery replacement does not affect your data. However, always back up your data before repair.

Q3: Do I need professional tools?

Basic smartphone repair tools are enough. No soldering is required.

Q4: Can I reuse the old back cover adhesive?

It is not recommended. Use new adhesive or B7000 glue for proper sealing.

Q5: How do I know if my battery is swollen?

If the back cover is slightly lifted or you feel pressure when pressing the back, the battery may be swollen.

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Troubleshooting After Battery Replacement

Q1: The phone is not turning on after battery replacement. What should I do?

Ensure:

• Battery connector is properly seated.
• Battery is charged.
• No flex cables are loose.

Try charging for 20 minutes before testing again.

Q2: Fingerprint sensor not working?

Reconnect the fingerprint flex cable and ensure it is properly aligned before tightening screws.

Q3: Phone not charging properly?

Check:

• Battery connection
• Charging port connection
• Ensure no debris inside charging port

Q4: Back cover not sticking properly?

Use fresh adhesive or apply B7000 glue and secure with clips for at least 1 hour.

Q5: Phone overheating after repair?

Make sure:

• Battery is original BN5A model
• No screws are misplaced
• Mid-frame is installed correctly

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Battery replacement is a moderate-level repair but completely manageable with patience and the right tools. Always work slowly and avoid forcing components.

If this guide helped you, consider sharing it with others who may need it.

Related Guides

More Xiaomi Redmi Note 10 5G/ Redmi Note 10T 5g/ POCO m3 Pro 5G Guides

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