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
1000TVL 1/3 CCD 110 Degree 2.8mm Lens Mini FPV Camera
GM320 Non-Contact Infrared (IR) Handheld Temperature Meter
Waveshare Adapter Board for Arduino and Raspberry Pi
Favorite LittleBee 30A-S OPTO Electronic Speed Controller (Original)
L293D Motor Driver/Servo Shield for Arduino
EDATEC 4MP 7.7mm M12 Raspberry Pi Lens
SP1848-27145 Thermoelectric Power Generator/Thermocooler Peltier Module
DYS Quanum 40A Multi-Copter Brushless Speed Controller Programmable ESC with 5V/3A (Original)
Emax SimonK Series Multirotor 12A Brushless ESC (Original) 







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