Features: 【High-Efficiency Energy Transfer】Supports 1.5A high-current active balancing ensuring efficient energy distribution during battery charging. 【Intelligent led light Design】Balancing light illuminates when operational, extinguishes during standby mode, and flashes to indicate series disconnection or lack of wiring. 【Dual-Direction Protections】Features triple flame-retardant systems for secure operating. 【Reinforced Silicone Cables】Utilises thickened, extended silicone wiring to guaranteeing stable balanced power delivery. 【Multi-Scenario Compatibility】Supports 4S 16.8V and 12V lithium batteries, compatibles various cell types. Specifications: Component: PVC Process: supports 1.5A high current active balancing,with balancing light Suitable for 3S / 4S lithium batteries Optional Supports 12V lithium and lithium iron phosphate battery protections Practicality: Suitable for active battery balancing, energy processing, power tool addition, balancing board Package Includes: 1PC Battery charging board active balancing board note: Please allow 1-2cm errors due to manual measurement. Please allow for slight color differences due to different display resolution.