4S 40A 18650 Lithium Battery Protection Board
The 4S 40A 18650 Lithium Battery Protection Board is a battery management protection module designed for 4-series (4S) lithium-ion 18650 battery packs. It provides essential safety features including overcharge, over-discharge, overcurrent, and short-circuit protection to ensure safe and reliable battery pack operation. Available at Directronics, the 4S 40A 18650 Lithium Battery Protection Board is ideal for students, hobbyists, makers, educators, and professional engineers working on high-current battery systems, robotics, portable power solutions, and embedded power applications.
Features:
• Designed for 4S (14.8V) 18650 Lithium Battery Packs
• Supports Up to 40A Continuous Discharge Current
• Provides Overcharge Protection
• Provides Over-Discharge Protection
• Includes Overcurrent and Short-Circuit Protection
• Supports Multi-Cell Lithium-Ion Battery Pack Management
• High Current Handling Capability
• Compact and Efficient PCB Design
• Improves Battery Safety and Performance
• Suitable for DIY Rechargeable Battery Pack Assembly
• Compatible with Robotics, Portable Electronics, and Power Applications
Why Choose 4S 40A 18650 Lithium Battery Protection Board?
• Protects lithium battery packs from electrical faults
• Suitable for high-power battery applications
• Helps extend battery life and improve reliability
• Provides stable power management for multi-cell packs
• Easy integration into custom battery projects
• Suitable for hobbyists, students, and professionals
Applications:
• 18650 Lithium Battery Pack Assembly
• Electric Vehicle Battery Projects
• Robotics Power Systems
• Portable Power Supply Units
• High-Power LED Applications
• DIY Battery-Powered Devices
• Solar Energy Storage Systems
• Embedded System Power Solutions
• Backup Power Applications
• Custom Rechargeable Battery Projects
Technical Specifications:
• Product Type: Lithium Battery Protection Board (BMS)
• Battery Configuration: 4S (4 Series Lithium-Ion Cells)
• Nominal Battery Voltage: 14.8V
• Fully Charged Voltage: 16.8V
• Maximum Continuous Current: 40A
• Battery Type: 18650 Li-Ion Cells
• Protection Functions: Overcharge, Over-Discharge, Overcurrent, Short Circuit
• Charging Voltage: 16.8V DC (Typical)
• Interface Pins: B+, B-, B1, B2, B3, P+, P-
• Balancing Function: Model Dependent
• Operating Temperature: -20°C to +60°C (Typical)
Package Includes:
• 1 × 4S 40A 18650 Lithium Battery Protection Board
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Dual Charger For 18650 Rechargeable Li-Ion Battery
MT3608 DC to DC Power Boost Module
Arduino Uno
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Why Buy from Directronics?
Directronics provides quality development boards, communication modules, sensors, electronic components, robotics modules, battery management solutions, and IoT products for students, makers, educational institutions, startups, and industry professionals. Explore our complete range of Arduino, ESP32, ESP8266, Raspberry Pi, power modules, charging solutions, programming tools, and embedded development products to bring your ideas to life.
Note:
Product images are for illustration purposes only. Please review the battery configuration, wiring connections, charging voltage, current rating, and safety requirements before assembling or using the battery pack.