4S Active Balancer Board 1.2A for Lifepo4/Li-ion Battery, Inductive Equalizer Module

This board operates on the principle of adjacent cell voltage equalization and is not intended for battery maintenance purposes. It must be used in conjunction with a lithium battery protection board when connected to a battery pack. Inductive Working Principle: This module performs adjacent cell voltage equalization. When the voltage difference between adjacent cells exceeds 0.1V, the internal IC triggers equalization until the difference is reduced to within 0.03V, at which point equalization stops. During charging and discharging of the battery pack, voltage differences between adjacent cells activate the equalization function. This helps reduce overall voltage imbalance across the pack, improving consistency and longevity. Wiring Definitions: B−: Total negative terminal of the battery pack (negative terminal of the first cell) B1: Positive terminal of the first cell B2: Positive terminal of the second cell B3: Positive terminal of the third cell B4: Positive terminal of the fourth cell … BN+: Positive terminal of the Nth cell Technical Specifications: 1. Operating voltage per cell: 2.0V–4.5V 2. Compatible with standard ternary and lithium iron phosphate (LiFePO₄) batteries 3. Not compatible with lithium titanate (LTO) batteries Equalization Status Indicators: 1. Equalization LED ON: Equalization is active 2. Equalization LED OFF: Equalization circuit is in standby mode 3. Equalization LED flashing: Indicates an open string or fault condition Equalization Current Characteristics: 1. Adjacent voltage difference > 0.1V: Equalization current ≈ 0.5–0.7A 2. Adjacent voltage difference > 0.2V: Maximum equalization current = 1.2A 3. Smaller voltage differences result in proportionally lower equalization current Color: Black Material: PCB Note: Labeling and silkscreen may vary slightly between production batches.