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The ABCs of BECs: External battery eliminator circuits made easy
Electric fliers use battery eliminator circuits (BECs) because they ensure that their planes never leave the ground without a fully charged power source for the radio gear. If you have an electronic speed control with a BEC, you can forgo using a receiver battery pack, as the radio will be powered from the BEC side of the speed control. There are also external BECs, and those are the focus of this column. In the simplest...
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