4S/30A BMS Module

The 4S/30A BMS Module is a high-current battery management system designed for 4-series lithium-ion or lithium-polymer battery packs. It provides comprehensive protection and cell balancing to ensure safe operation under higher load conditions. With a higher discharge capability than standard BMS boards, this module is suitable for power-hungry applications requiring stable and reliable battery performance.

Technical Specifications:

• Battery Configuration: 4S (4 cells in series)
• Rated Discharge Current: 30 A
• Battery Type: Lithium-ion / Lithium-polymer
• Overcharge Protection Voltage: ~4.25 V per cell
• Over-discharge Protection Voltage: ~2.5 V per cell
• Overcurrent Protection: Supported
• Short-circuit Protection: Supported
• Balancing Function: Passive cell balancing
• Connection Terminals: B+, B−, B1, B2, B3, P+, P−
• Balance Connector: JST-type multi-pin connector

Features:

• High current handling up to 30 A for demanding loads
• Protects against overcharge, over-discharge, overcurrent, and short circuit
• Integrated balancing improves cell consistency and battery lifespan
• Pre-wired balance connector for easy installation
• Compact and efficient PCB layout for battery pack integration

Applications:

• Electric bikes and scooters
• Power tools and robotics
• High-power portable energy storage systems
• DIY lithium battery packs
• Backup power and inverter systems