Original POCO F3 (M2012K11AG) Battery BM4Y – 4520mAh

The POCO F3 Battery BM4Y is a high-capacity 4520mAh Li-Ion Polymer replacement battery designed for the POCO F3 (M2012K11AG). This BM4Y battery is also compatible with Mi 11X 5G (M2012K11AI), Mi 11X Pro 5G (M2012K11I), Xiaomi Redmi K40 (M2012K11AC), Xiaomi Redmi K40 Pro (M2012K11C), and Xiaomi Redmi K40 Pro+.

If your POCO F3 battery drains quickly, requires frequent charging, or no longer provides sufficient battery backup, replacing the old battery with a compatible BM4Y 4520mAh battery can help restore dependable everyday battery performance.

This Original POCO F3 BM4Y Battery features an approximate 3.87V voltage, approximately 2 to 3 hours charging time, and weighs around 55.5g. It comes in Loose Packing and includes a 180 Days (03 Months) Replacement Warranty.

Feature Details

Compatible Models

The BM4Y 4520mAh replacement battery is compatible with:

• POCO F3 (M2012K11AG)
• Mi 11X 5G (M2012K11AI)
• Mi 11X Pro 5G (M2012K11I)
• Xiaomi Redmi K40 (M2012K11AC)
• Xiaomi Redmi K40 Pro (M2012K11C)
• Xiaomi Redmi K40 Pro+

Please verify your device model and existing battery model number before placing your order.

Why Replace Your POCO F3 Battery?

With regular use, smartphone batteries naturally lose their ability to hold a charge. An aging battery may cause:

• Fast battery drainage
• Frequent charging
• Reduced battery backup
• Unexpected shutdowns
• Battery percentage dropping quickly
• Difficulty maintaining a full charge
• Reduced usage time between charges

Replacing an old or weak battery with a compatible POCO F3 BM4Y Battery can help restore reliable battery backup.

Original POCO F3 BM4Y Replacement Battery

The BM4Y battery features a 4520mAh capacity and Li-Ion Polymer battery technology, making it a suitable replacement option for compatible Xiaomi and POCO smartphones.

Key Highlights

• 4520mAh battery capacity
• Li-Ion Polymer battery
• Approx. 3.87V voltage
• 2–3 hours approximate charging time
• Approx. 55.5g weight
• Compatible with POCO F3 (M2012K11AG)
• Compatible with Mi 11X 5G (M2012K11AI)
• Compatible with Mi 11X Pro 5G (M2012K11I)
• Compatible with Redmi K40 (M2012K11AC)
• Compatible with Redmi K40 Pro (M2012K11C)
• Compatible with Redmi K40 Pro+
• 180 Days (03 Months) Replacement Warranty
• Loose Packing
• Country of Origin: China

Important Installation Information

This is an internal smartphone replacement battery. Professional installation by a qualified mobile technician is recommended.

Before installation:

1. Switch off the smartphone completely.
2. Carefully remove the existing battery.
3. Check the battery model number and connector.
4. Install the BM4Y battery correctly.
5. Make sure the battery connector is securely connected.
6. Test charging and battery operation after installation.
7. Do not puncture, bend, crush, or disassemble the battery.

Improper installation or handling may damage the battery or smartphone and may affect warranty coverage.

Warranty Information

Warranty: 180 Days (03 Months) Replacement Warranty.

The warranty covers manufacturing-related defects under normal usage conditions during the stated warranty period.

Warranty Does Not Cover

• Physical damage
• Broken or damaged connectors
• Punctured, bent, crushed, or swollen batteries
• Damage caused by improper installation
• Water or liquid damage
• Short-circuit damage
• Misuse or abuse
• Accidental damage
• Damage caused by incompatible devices
• Unauthorized modification or tampering
• Damage caused by incorrect handling or installation

Battery Safety Guidelines

For safe handling and installation:

• Keep the battery away from excessive heat and direct flames.
• Do not puncture, bend, crush, or disassemble the battery.
• Do not expose the battery to water or other liquids.
• Avoid short-circuiting the battery terminals.
• Use a compatible charging system.
• Do not place heavy objects on the battery.
• Keep the battery away from children and pets.
• If the battery becomes swollen, unusually hot, or damaged, stop using it immediately.
• Professional installation is recommended.

Before Ordering

Please check the following details before purchasing:

• Your smartphone model
• Existing battery model number
• Battery connector
• Battery capacity and voltage
• Compatibility with your device

For this listing, the battery model is BM4Y and the battery capacity is 4520mAh.

Customer Support

If you need assistance confirming compatibility before ordering, contact our support team:

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

Frequently Asked Questions

Q1. What is the battery model number?

The battery model number is BM4Y.

Q2. What is the capacity of the BM4Y battery?

The battery capacity is 4520mAh.

Q3. Which devices are compatible with this battery?

It is compatible with POCO F3 (M2012K11AG), Mi 11X 5G (M2012K11AI), Mi 11X Pro 5G (M2012K11I), Xiaomi Redmi K40 (M2012K11AC), Xiaomi Redmi K40 Pro (M2012K11C), and Xiaomi Redmi K40 Pro+.

Q4. What type of battery is BM4Y?

The BM4Y is a Li-Ion Polymer battery.

Q5. What is the voltage of this battery?

The approximate voltage is 3.87V.

Q6. How long does the battery take to charge?

The approximate charging time is 2 to 3 hours, depending on the device and charging conditions.

Q7. What warranty is provided?

This battery comes with a 180 Days (03 Months) Replacement Warranty.

Q8. Is professional installation recommended?

Yes. Professional installation by a qualified mobile technician is recommended for safe installation of this internal battery.

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