Features: Made of food-grade material, strong, durable, and highly conductive for reliable performance and extended service life. High current discharge capacity with high energy conversion efficiency and low process loss. Simple charging and discharging circuit—no separate rechargeable battery charging circuit required. Designed with high safety and maintenance-free operation. Excellent ultra-low temperature performance; operating temperature range: -40°C to +85°C. Specifications: Material: Fiberglass Board, Electronic Components Dimensions: Approx. 9.3 x 3.8 cm (3.66 x 1.5 in) Color: Black Quantity: 1 Piece Product Parameters: Maximum Charge Voltage: Single rated voltage × N (N = number of cells in series) Maximum Charge Current: Not restricted (dependent on supercapacitor discharge current) Maximum Discharge Current: Not restricted (dependent on supercapacitor discharge current) Minimum Discharge Voltage: 0.1 V Cell Balancing Start Voltage: 2.65 V Balancing Start Voltage Tolerance: ±0.25% Balancing Status Indicator: Red LED illumination Balancing Current per Cell: Less than 1 A DC Resistance: 1 mΩ Operating Temperature Range: -40°C to +85°C Storage Temperature Range: -40°C to +85°C Notes: • Equipped with LED overvoltage indicator for cell balancing. To prevent damage to the balancing board, fully discharge each supercapacitor cell to 0 V before installation. • Solder components individually onto the supercapacitor balancing board. For intellectual property protection, silkscreen markings on sample units may be omitted. • No retail packaging included. • Slight measurement variance of up to 1 cm may occur due to manual measurement. • Screen display settings may cause slight color variation between images and actual product. Package Includes: 1 × Super Capacitor Balancing Protection Board