Battery BM4Y 4520mAh by Xiaomi Poco F3 Redmi K40 Pro 460200005B5S Service Pack

Battery BM4Y 4520mAh for Xiaomi Poco F3 / Redmi K40 Pro (M2012K11AG / M2012K11AC) 460200005B5S Service Pack

Battery module for Xiaomi Poco F3 (M2012K11AG) and Redmi K40 Pro (M2012K11AC) in Service Pack quality designed to restore device autonomy and power stability with direct hardware-level integration. This version corresponds to internal code 460200005B5S, used in the Service Pack channel as a unified solution compatible across multiple Xiaomi platforms. It integrates calibrated battery management electronics (BMS) and adapted flex, allowing installation without modifications and ensuring proper communication with the motherboard. With a nominal capacity of 4520mAh, it delivers balanced performance under intensive use, optimizing charge cycles and thermal behavior. Designed for technical environments with pre-assembly testing before closing the device.

Key features

• Capacity: 4520mAh
• Voltage: 3.87V
• Chemistry: Li-Polymer
• Battery model: BM4Y
• Internal code: 460200005B5S
• Compatibility: Xiaomi Poco F3 (M2012K11AG), Redmi K40 (M2012K11AC), Redmi K40 Pro / Pro+
• Direct integration with adapted flex and BMS

Service Pack quality ensures full compatibility with the device power management system, providing stable charging and discharging behavior and consistent power consumption. Electronic calibration prevents reading errors and maintains efficient voltage control, reducing overheating risks. Its design allows precise chassis fit and firm connector alignment, making installation easier and minimizing post-repair issues. It is a solution aimed at technicians seeking reliability, durability, and consistency in every repair, optimizing workflow and final results.

Available for immediate shipping from Spain.

Installation tips

Disconnect the battery before handling.

Use ESD protection tools.

Test charging before closing.

Ensure proper connector alignment.

Replace adhesives and clean residues.

Check initial charge cycles and calibration.

Technical table

Brand Compatible models Technical model Part Number Component type Dimensions Capacity/Voltage Quality
Xiaomi Poco F3 / Redmi K40 / Redmi K40 Pro / Pro+ M2012K11AG / M2012K11AC 460200005B5S or equivalent Battery — 4520mAh / 3.87V Service Pack