JK-BMS 4S to 8S 40A Smart BMS with Active Balancer for Lithium Battery Pack JK-BD4A8S4P, is an intelligent battery management system designed to monitor, protect, and balance lithium battery packs used in energy storage systems, electric mobility, and DIY battery projects. It supports multiple lithium battery chemistries including Li-ion, LiFePO4, and LTO with configurable series connections from 3S to 8S depending on battery type. The integrated 0.4A active balancing technology equalizes cell voltage differences to improve battery efficiency and lifespan. With advanced protection features, Bluetooth connectivity, and optional communication interfaces such as RS485 and CAN, this BMS provides reliable battery monitoring and management for high performance lithium battery systems.

Features:

1. Smart battery management system for lithium battery packs
2. Supports Li-ion, LiFePO4, and LTO battery chemistries
3. Compatible with 3S to 8S lithium battery configurations
4. Integrated 0.4A active balancing technology
5. High current capability up to 40A continuous discharge
6. Bluetooth monitoring support for Android and iOS devices
7. Multiple protection features including overcharge and short circuit protection

Specifications:

• Product Type: Smart Battery Management System
• Model: JK BMS 4S to 8S 40A
• Battery Type: Lithium Ion Lithium Iron Phosphate Lithium Titanate
• Battery Configuration Li ion: 3S to 8S
• Battery Configuration Lifepo4: 4S to 8S
• Battery Configuration LTO: 7S to 8S
• Balance Method: Active Balance
• Active Balance Current: 0.4A
• MOSFET Resistance: 2.8mΩ
• Continuous Discharge Current: 40A
• Peak Discharge Current: 60A
• Over Current Protection Range: 10A to 40A Adjustable
• Over Current Protection Release Time: 2S to 120S Adjustable
• Over Charge Protection Voltage: 1.2V to 4.35V Adjustable
• Over Charge Protection Release Voltage: 1.2V to 4.55V Adjustable
• Over Discharge Protection Voltage: 1.2V to 4.35V Adjustable
• Over Discharge Protection Release Voltage: 1.2V to 4.35V Adjustable
• Single Cell Voltage Range: 1V to 5V
• Voltage Accuracy: ±5mV
• Temperature Sensor Quantity: 3
• Short Circuit Protection: Yes
• Bluetooth Function: Android and IOS Support
• GPS Remote Control: Supported
• Communication Port: RS485 CAN
• Dimensions: 110mm × 73mm × 17mm
• Mounting Type: PCB Mount
• Package Type: Anti Static Pack

Applications:

• Lithium battery pack protection systems
• Solar energy storage battery management systems
• Electric bike and electric vehicle battery packs
• Portable power station battery systems
• DIY lithium battery pack building projects
• Industrial energy storage battery monitoring systems

Package Includes:

1 × JK BMS 4S to 8S 40A Smart BMS with Active Balancer for Lithium Battery Pack