Lithium battery active balance energy transfer board. High-efficiency energy transfer with capacitive equalization technology. Capacitive energy transfer equalization board with high precision 5mV accuracy, enabling full pack equalization (not adjacent cell only). Working voltage range: 1.8V–4.5V. Compatible with ternary lithium (NCM), lithium iron phosphate (LFP), and lithium titanate (LTO) batteries. Operates by capacitive charge transfer mechanism. Equipped with ultra-low internal resistance MOS and 2OZ copper thickness PCB. Balancing current range: 0–5.5A, dynamically adjusted based on cell count and condition. Includes dormant switch wiring position; dormant mode current consumption less than 0.1mA. Voltage balance accuracy within 5mV. Quiescent current approximately 12mA. Recommended for battery capacities between 60–300Ah. Features under-voltage sleep protection: automatically enters sleep mode when voltage drops below 3.0V. Standby current less than 0.1mA. Product Name: 4S Capacitive Energy Transfer Equalizer Board (with Housing) Battery Compatibility: NCM, LFP, LTO Product Dimensions: 66 x 46 x 16 mm Single Cell Voltage Range: NCM/LFP: 2.7–4.2V; LTO: 1.8–4.2V Balancing Method: Full battery pack participates in simultaneous active energy transfer balancing Under-voltage Protection & Sleep Threshold: NCM/LFP: below 2.7V; LTO: below 1.8V Operating Temperature: -10°C to +60°C Power Source: Self-powered via internal battery energy transfer, no external power supply required 4S Quiescent Current (Full State): 16.8V (4.2V x 4 cells), 9mA Note: Slight variation in appearance between production batches may occur, does not affect functionality Color: Black Material: PCB Package Contents: 1 x Equalizer Board 1 x Acrylic Shell 1 x Terminal Wire Note: Other items not included. Note: Lighting and display differences may cause slight color variation between image and actual product. Measurement tolerance: ±1–3 cm.