Product Overview

The PGY-173 is a smart Battery Management System (BMS) designed for 24S LiFePO4 battery packs, supporting up to 70A continuous discharge current. It integrates monitoring, protection, and communication functions into a compact and reliable solution for lithium battery systems.

Equipped with passive balancing technology, the system automatically equalizes cell voltage during charging to improve battery consistency and extend service life.

With real-time monitoring of voltage, current, temperature, and SOC, along with Bluetooth connectivity for mobile APP access, the PGY-173 ensures safe, efficient, and intelligent battery operation for various applications.

Key Features

• Passive Balancing Technology

·Automatic balancing during charging

·Balancing current: 30–80mA

·Improves cell consistency and battery lifespan

• 24S LiFePO4 Battery Support

·Designed for 24 series lithium iron phosphate battery packs

·Cell voltage detection range: 1.0V–5.0V

·Total voltage detection range: 0–80V

• Stable Charge & Discharge Performance

·Continuous charge current: 60A

·Continuous discharge current: 70A

·Suitable for medium-power lithium battery systems

• Smart Monitoring & Bluetooth Communication

·Real-time monitoring of voltage, current, temperature, and SOC

·Built-in Bluetooth communication

·Supports mobile APP (iOS & Android)

·Parameter configuration via PC software

• Comprehensive Protection Functions

·Over-charge and over-discharge protection

·Charge and discharge over-current protection

·Short-circuit protection

·MOS temperature and battery temperature protection

·Cell voltage difference protection

• Intelligent Battery Management

·Coulomb counting (SOC estimation <5% error)

·Supports single cell voltage detection and fault detection

·Supports OTA firmware upgrade

• Anti-Spark One-Line Communication

·Integrated one-line communication interface

·Anti-spark function improves system safety during connection

Electrical Specifications

·Battery Type: LiFePO4

·Cell Configuration: 24S

·Continuous Charge Current: 60A

·Continuous Discharge Current: 70A

·Working Current: 5–10 mA

·Sleep Current: 300–500 μA

·Shutdown Current: 10–20 μA

·Balancing Type: Passive (resistive discharge)

·Balancing Current: 30–80 mA

·Voltage Detection Range: 0–80V

·Cell Voltage Detection Range: 1.0V–5.0V

·SOC Estimation Accuracy: <5%

·Temperature Sensors: 2 × NTC

·Communication: Bluetooth

·Operating Temperature: -20°C to +70°C

·Storage Temperature: -40°C to +85°C

Power Consumption

·Operating Current: 5–10 mA

·Sleep Mode Current: 300–500 μA

·Deep Sleep Current: 10–20 μA

Protection Parameters

·Over-charge Protection (per cell): 3.75V

·Over-discharge Protection (per cell): 2.2V

·Short-circuit Protection: supported

·Charge Over-current Protection: configurable

·Discharge Over-current Protection: configurable

·MOS Over-temperature Protection: supported

·Battery Temperature Protection: supported

Mechanical Specifications

·PCB Size: 140 × 70 × 10 mm

Application Scenarios

·24S LiFePO4 battery packs

·Energy storage systems (ESS)

·Electric mobility and power systems

·Industrial battery management applications