Inductive energy transfer balance board, high current 1.2A energy transfer battery voltage balancer, effectively balances battery voltage and enhances the overall efficiency of the battery pack! Please note: The appearance and color may vary between different batches, which does not affect functionality. Balance Instructions: 1. When the equalization light is on, equalization is active. 2. When the equalization light is off, the circuit is in sleep mode. 3. When the light is flashing, it indicates a drop or a circuit fault. Equilibrium principle: This module balances the voltage difference between adjacent connections. When the voltage difference between adjacent batteries reaches 0.1V or more, the chip will initiate balancing until the voltage difference is within 0.03V and stops working. When connected to a battery pack, the adjacent voltage difference during charging and discharging triggers the equalization process, bringing the battery pack voltage to an optimal level, thus reducing maintenance costs. Technical parameters: Working voltage is 2.0V-4.5V, compatible with certain lithium-ion batteries, not suitable for lithium titanate batteries. Balance current: - Adjacent voltage difference greater than 0.1V (current approximately 0.5-0.7A); - Adjacent voltage difference greater than 0.2V (maximum balance current 1.2A); - Smaller voltage differences result in reduced equalizing current. Wiring Definition: B-: Total negative terminal of the battery pack (negative of the first battery) B1: Positive terminal of the first battery B2: Positive terminal of the second battery B3: and so on. Color: Black Material: PC + Metal Size: 40 x 23mm Package Contents: 2 x Active Equalizer Balancer 2 x Cable Only the above package content is included; other products are not supplied. Note: Lighting and different displays may cause the color of the item in the picture to differ from reality. Measurement error allowed is +/- 1-3cm.