Battery for Xiaomi Redmi Note 12S / Note 11S / Note 11 / Poco M4 Pro, BN5D

Is your Xiaomi Redmi Note 12S, Note 11S, Note 11, or Poco M4 Pro no longer holding a charge like it used to? Does your phone shut down unexpectedly even when the battery indicator shows power remaining, or do you find yourself reaching for the charger more and more frequently throughout the day? This BN5D Battery 5000mAh is the exact high-performance replacement component you need to restore all-day battery life and reliable power delivery to your device. Available now at THE REPAIR PLUS, your trusted UK-based online store for quality phone repair parts.

Compatibility

This replacement battery features model number BN5D and is designed for a range of popular Xiaomi devices that share this same battery specification. It is compatible with the following models:

Xiaomi Redmi Series:

• Redmi Note 12S (Model 23030RAC7Y) 

• Redmi Note 11S (Models 2201117SY, 2201117SG) 

• Redmi Note 11 (Models 2201117TY, 2201117TG, 2201117TI, 2201117TL) 

Xiaomi Poco Series:

• Poco M4 Pro 4G (Model MZB0B5VIN, 2201117PG) 

⚠️ CRITICAL: Verify your exact model number before purchasing. The BN5D battery is specifically for the 4G versions of these devices. Please check your device model number in Settings → About Phone and confirm compatibility. THE REPAIR PLUS recommends double-checking your device compatibility to guarantee a perfect match.

Signs You Need This Replacement

• The time between charges is getting shorter and shorter, requiring multiple charges daily

• Your phone shuts down unexpectedly at a certain battery percentage (often 15-30%)

• The charging process completes surprisingly quickly, but the battery drains just as fast

• The battery is swollen or bulging, potentially pushing the screen or back cover apart—if swollen, handle with extreme caution

• You're experiencing overheating issues during charging or normal use

• The phone takes an unusually long time to charge, or the charging percentage jumps erratically

• Your device powers off immediately when unplugged, even showing a high percentage

Premium Quality Specifications

This high-quality replacement battery meets or exceeds the original specifications and includes the following features:

• Capacity: 5000mAh (19.3Wh) 

• Battery Type: Premium Lithium-Ion Polymer (Li-Po) 

• Voltage: 3.87V nominal 

• Model Number: BN5D

• Dimensions: Approximately 87.8mm x 63.8mm x 4.8mm 

• Weight: Approximately 55g 

• Condition: Brand New with zero operating cycles

• Safety Features: Built-in protection circuit against overcharging, over-discharging, overcurrent, and short circuits 

What This Replacement Restores

• Original 5000mAh Battery Life: Restores the all-day performance your device had when new, providing extended usage for streaming, gaming, and daily tasks 

• Reliable Power Delivery: Eliminates unexpected shutdowns and erratic battery behaviour

• Safe Operation: Premium quality batteries feature built-in protection against overcharging, overheating, and short circuits to ensure long-term use

• Device Integrity: Replacing a swollen battery prevents further damage to other internal components

• Sustainable Solution: Extend the life of your current device instead of contributing to electronic waste

Premium Quality Assurance

This is a premium quality replacement battery manufactured to meet or exceed original specifications. High-quality aftermarket batteries are manufactured to meet or even exceed original equipment specifications . The battery features high-quality lithium-polymer cell technology with zero cycle count and has passed rigorous safety testing with certifications including ISO 9001:2008 .

The benefits of choosing a quality replacement battery from THE REPAIR PLUS include:

• Assurance that the battery will have the stated 5000mAh capacity

• Assurance that the battery will have low self-discharge rates and will hold its charge even when not in use

• Assurance that the power unit will work seamlessly with your device

• Assurance that the manufacturing process has respected all safety guidelines for Lithium-Ion batteries

Each unit undergoes rigorous quality control with built-in safety protection against overcharging, overheating, and short circuits. All parts stocked at THE REPAIR PLUS undergo thorough quality checks before being made available to customers.

Why Choose THE REPAIR PLUS?

• UK-Based Online Store: Fast shipping across the United Kingdom with reliable delivery

• Quality Tested Parts: Each battery is sourced from trusted suppliers and verified for quality

• Expert Support: Questions about compatibility? THE REPAIR PLUS team is here to help

• Trusted Supplier: Join countless UK customers who trust THE REPAIR PLUS for their phone repair needs

• Eco-Friendly Choice: Repairing your device instead of replacing it protects natural resources and prevents electronic waste

Important Battery Information

First-Time Use and Conditioning:

New Lithium-Ion batteries require proper conditioning to achieve optimal performance:

• Before installation: Fully charge the battery before installing it in your device 

• Initial cycles: New Lithium Ion batteries must be FULLY CHARGED and FULLY DISCHARGED 2 to 3 times before being FULLY CONDITIONED 

• Full performance: Full performance and longevity is only achieved after 2 to 3 complete charge and discharge cycles 

• After conditioning: After you go through 2 to 3 cycles, you'll never have to condition your battery again 

Some manufacturers recommend 3 to 5 complete charge and discharge cycles for optimal performance . Each cycle includes discharging to 10-20%, then charging to 80-90% .

Proper Charging Habits:

• Use the original charger that came with your device for best performance 

• Avoid overcharging – unplug once fully charged

• To prolong battery lifespan, charge when the level drops to 20-30% rather than letting it drain completely to 0% 

• Do not use the device while charging if possible 

What Causes Battery Damage:

• Overheating: From energy-intensive apps like video calls or gaming 

• Extreme loads: Demanding games, video rendering while charging 

• Charging at low temperatures: Near-freezing conditions damage batteries 

• Physical damage: Drops, impacts, or moisture exposure 

• Storage while discharged: Long-term storage with empty battery 

• Incompatible chargers: Always use the recommended charger 

Storage Guidelines:

• Store at approximately 25-50% charge in a cool, dry place (0-25°C) 

• Capacity loss is minimal (about 2% per year) under proper storage conditions 

• Expected lifespan with proper care: 2-3 years or 700-900 charge cycles 

Swollen Battery Warning:

If your old battery is swollen, handle with extreme caution. Do not puncture, crush, or apply heat—this can cause fire or explosion . Properly dispose of swollen batteries at authorised recycling centres .

Proper Disposal:

Never throw lithium-ion batteries in household trash. Always recycle through authorised electronic waste recycling centres. Tape over the terminals before disposal to prevent short circuits .

Installation Information

⚠️ IMPORTANT: This is an intermediate-level repair requiring careful attention.

The Xiaomi Redmi and Poco series feature non-removable battery designs, which means professional-grade tools and techniques are necessary for safe removal of the old battery .

Important Safety Precautions:

• Professional installation by a qualified technician is strongly recommended if you lack experience 

• Need professional installation technology – we won't be responsible for any damage due to improper operation 

• Never use metal tools near the battery – they can puncture it and cause fire or explosion

• Check if there is any dust in the connector or if any pin is broken before installation 

• Clean the connector using IPA or swabs if necessary 

• Use ESD (electrostatic discharge) protection

• If the battery is swollen, handle with extreme care and avoid applying pressure

• Once installed, the battery cannot be returned

Testing Before Installation:

If your phone cannot be powered on with the new battery, you may need to install it again and check that the cable is properly connected . All batteries are tested before shipping out .

Learning Resources:

Instruments are without instructions – you can read tutorial videos on YouTube and install it yourself or have a technician help you.

THE REPAIR PLUS strongly recommends having this component installed by a qualified technician with experience in smartphone repairs. We are not responsible for any damage caused during installation.

Package Includes

1 x BN5D Battery 5000mAh for Xiaomi Redmi Note 12S / Note 11S / Note 11 / Poco M4 Pro

Order with Confidence

When you order from THE REPAIR PLUS, you are choosing quality parts and reliable service from a UK-based seller. We take pride in helping you keep your devices running like new. Fast shipping across the UK means you get your parts quickly and can restore your device's legendary battery life with minimal downtime.