Original Mi Redmi K40 Pro+ Battery BM4Y 4520mAh – Premium Replacement

Looking for a reliable Mi Redmi K40 Pro+ Battery replacement? This Original Xiaomi BM4Y Battery is a high-quality 4520mAh replacement battery designed for compatible Xiaomi, Redmi, Mi, and POCO smartphones using the BM4Y battery model.

If your phone battery drains quickly, shuts down unexpectedly, charges slowly, or no longer provides the backup it once did, replacing the battery can help restore dependable daily performance. This battery is supplied as a brand-new replacement unit and includes a 3 Months Replacement Warranty from the date of purchase.

Product Specifications

Compatible Models

This battery is compatible with the following smartphones:

Redmi K40 Series

• Xiaomi Redmi K40 (M2012K11AC)
• Xiaomi Redmi K40 Pro (M2012K11C)
• Xiaomi Redmi K40 Pro+

Mi 11X Series

• Mi 11X 5G (M2012K11AI)
• Mi 11X Pro 5G (M2012K11I)

POCO Series

• POCO F3 (M2012K11AG)

Always verify the battery model number BM4Y before purchasing to ensure compatibility.

Why Replace Your Mi Redmi K40 Pro+ Battery?

Over time, smartphone batteries naturally lose their ability to hold a full charge. Replacing an aging battery can help improve battery backup and restore reliable daily performance.

Common Signs of Battery Failure

• Battery drains quickly
• Frequent charging throughout the day
• Unexpected phone shutdowns
• Reduced battery backup
• Overheating during use or charging
• Slow charging performance

The Original Xiaomi BM4Y Battery has a rated capacity of 4520mAh, helping compatible devices maintain dependable everyday usage.

Genuine Xiaomi Replacement Battery

This is a 100% Original Xiaomi Battery supplied in loose packaging. It is designed specifically for smartphones requiring the BM4Y battery model.

For best compatibility, compare the battery model number, connector type, dimensions, and specifications with your existing battery before installation.

Important Installation Information

Important: Battery replacement should be performed by a qualified mobile repair technician. Improper installation may damage the battery or smartphone and may void warranty coverage.

Warranty Information

This Mi Redmi K40 Pro+ Battery BM4Y includes a 90 Days (3 Months) Replacement Warranty from the date of purchase.

The warranty covers eligible manufacturing defects and battery performance issues, subject to inspection and verification.

Warranty Does Not Cover

• Physical damage
• Improper installation
• Damage during installation
• Water or liquid damage
• Misuse or abuse
• Swelling caused by improper handling
• Bulging
• Accidental damage
• Damage caused by incompatible devices
• Tampering or modification

All warranty claims are subject to verification.

Battery Safety Guidelines

Lithium-ion polymer batteries should always be handled carefully.

• Do not puncture, bend, or crush the battery.
• Do not expose the battery to excessive heat.
• Avoid short-circuiting battery terminals.
• Do not attempt to modify the battery.
• Use only compatible chargers and accessories.
• If the battery appears swollen or damaged, do not install or use it.

Professional installation is strongly recommended.

Before Ordering

Please follow these simple steps before placing your order:

1. Switch off your smartphone.
2. Have the device inspected by a qualified technician.
3. Check the battery model number printed on the existing battery.
4. Confirm that the battery code is BM4Y.
5. Compare the connector and specifications.
6. Verify compatibility with your device.
7. Install through a professional technician.

Checking the battery model before ordering helps ensure compatibility and reduces the risk of purchasing an incorrect replacement battery.

Support

Email: support@batteryhub.online
Call / WhatsApp: 8356885211
Support Hours: 11:00 AM – 8:00 PM
Sunday: Closed

Frequently Asked Questions

Is this an original Mi Redmi K40 Pro+ battery?

Yes. This is a 100% Original Xiaomi BM4Y Battery designed for compatible Xiaomi, Redmi, Mi, and POCO smartphones.

What is the battery capacity?

The battery has a rated capacity of 4520mAh.

Which phones are compatible with this battery?

Compatible models include Mi Redmi K40, Redmi K40 Pro, Redmi K40 Pro+, Mi 11X 5G, Mi 11X Pro 5G, and POCO F3.

Does the battery come with a warranty?

Yes. It includes a 90 Days (3 Months) Replacement Warranty, subject to warranty terms and conditions.

Is professional installation recommended?

Yes. Professional installation is recommended to ensure safe and proper battery replacement.

What should I check before ordering?

Verify the battery model number BM4Y, phone model, connector type, dimensions, and specifications before purchasing.

Mi Redmi K40 Pro+ Battery, Redmi K40 Pro Plus Battery Replacement, Xiaomi BM4Y Battery, Original BM4Y Battery, Redmi K40 Pro+ 4520mAh Battery, Redmi K40 Battery Replacement, Redmi K40 Pro Battery, Mi 11X Battery BM4Y, Mi 11X Pro Battery, POCO F3 Battery Replacement, Xiaomi Mobile Battery, Genuine Xiaomi Battery, BM4Y Battery Online India, Redmi K40 Pro+ Original Battery, Xiaomi BM4Y 4520mAh Battery.

Related Xiaomi Batteries

Looking for another genuine Xiaomi or Redmi replacement battery? Explore our collection of high-quality original batteries designed for long-lasting performance, reliable backup, and perfect compatibility with supported Xiaomi smartphones.

Whether you’re replacing an aging battery or restoring your device’s battery life, these popular Xiaomi battery models may also be helpful:

• Original Xiaomi Redmi Note 3 Pro Battery BM46 – 4050mAh
  Suitable for Xiaomi Redmi Note 3 Pro smartphones, this original BM46 battery delivers dependable performance and extended standby time.
  https://batteryhub.online/original-xiaomi-redmi-note-3-pro-battery-bm46-4050mah/
• Original Mi Redmi Note 4 / Note4 Battery BN43 – 4100mAh
  A high-capacity original BN43 battery designed for Redmi Note 4 users seeking reliable daily backup and stable power performance.
  https://batteryhub.online/original-mi-redmi-note-4-note4-battery-bn43-4100mah/
• Original Mi Redmi A3X Battery BN5R – 5000mAh
  Designed for Redmi A3X smartphones, this genuine BN5R battery offers excellent battery life and dependable charging performance.
  https://batteryhub.online/original-mi-redmi-a3x-24048rn6cg-24048rn6ci-battery-bn5r-5000mah/

Before placing an order, always verify both your phone model and battery model number to ensure compatibility.