When using a lithium battery pack of more than 3S, a switch-mode BEC offers much higher efficiency and generates less heat compared to a traditional linear BEC.
For example, consider a 4S lithium battery pack with a typical voltage of 14.8V. To output 5V/1A, the current flowing into the linear BEC is at least 1A. The power consumed by the BEC is 14.8V * 1A = 14.8W, but the useful output power is only 5V * 1A = 5W. Therefore, the efficiency of the linear mode BEC is just 5W / 14.8W = 33.8%. The redundant power, 14.8W – 5W = 9.8W, is dissipated as heat, causing the BEC to become very hot and potentially enter a protection state, rendering it unable to function.
In contrast, a switch-mode BEC can handle higher input voltages with much greater efficiency, reducing heat generation and maintaining reliable operation.
Package Includes:
1 x HENGE 8A UBEC
RP2040 Microcontroller IC by Raspberry PI-REEL of 100
Pixhawk 2.4.7 Upgraded Flight Controller kit with GPS Module Combo Kit
Pro Micro 5V 16M Mini Leonardo Microcontroller Development Board For Arduino
3D printer 128×64 Smart LCD controller for ramps 1.4
Ready to Sky Plastic Landing Gear for Quadcopter
Raspberry Pi 4 Model-B with 4 GB RAM
APM 2.8 Basic Flight Controller kit with GPS Module Combo Kit
Q100 Brushed Quad-copter Frame
35A 2-5S BLHELI_S 4 in 1 ESC 







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