Hobbywing UBEC 3A (2-6S) 5.5-26V UBEC Power Stabilization Module 3A@5V/6V Adjustable For RC Helicopters Large Fixed Wing. 1 UBEC 3A (2-6S). The UBEC is an advanced switching regulator with over-current and over-heatprotection function, and the maximum effciency of the system is nearly 90%.
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