MATEKSYS BEC20S-PRO Voltage Regulator (7-85V to 5V/8V/12V 5A)

The MATEKSYS BEC20S-PRO is a heavy-duty, high-voltage step-down regulator designed for X-Class, heavy-lift cinelifters, and agricultural drones operating on extreme battery configurations. By accepting a wide 7–85V input range (roughly 2–20S LiPo), this BEC powers demanding 5.2V, 8V, or 12V electronics directly from your main flight pack without a separate accessory battery.

Key features

• Wide 7–85V input range handles high-voltage agricultural and custom heavy-lift power systems safely.
• Selectable 5.2V, 8V, or 12V output to match your video transmitter, companion computer, or gimbal.
• Delivers a stable 5A continuous current, with 9A peak headroom, to keep high-draw components running without brownouts.
• Synchronous buck (step-down) design keeps efficiency at 88–96%, minimising heat build-up inside the build.
• Compact 35 x 24 x 5.5mm board adds just 5g to the finished aircraft.

Specifications

• Input voltage: 7–85V (2–20S LiPo)
• Output voltage: 5.2V / 8V / 12V (selectable, default 5.2V)
• Continuous output current: 5A
• Peak output current: 9A
• Regulator type: Synchronous buck
• Dropout voltage: 2 V (at least 14 V input needed for a stable 12 V output)
• Enable pin: output shuts down when EN is pulled below 0.5 V
• Protection: thermal shutdown, overcurrent with self-recovery, 2 s short-circuit tolerance; no reverse-polarity protection
• Dimensions: 35 x 24 x 5.5 mm
• Weight: 5 g

This regulator is a useful problem-solver for 12S+ builds. Always verify your selected output voltage with a multimeter before connecting sensitive payloads like high-definition digital video transmitters or specialised sensors.