UBEC & BEC Modules
Compare UBEC and BEC modules for drones from Chinese manufacturers by input voltage, output voltage and continuous current, for servos and electronics.
Standalone UBEC and BEC modules only: voltage regulators that power receivers, servos and onboard electronics from the flight battery. ESCs and power boards with built-in BECs are on their own pages. Listings run from 2S to 6S modules to 14S input.
Quick selection guide
Servos on planes and VTOL
A separate UBEC of 5 A or more keeps servos powered without loading the ESC or flight controller.
High-voltage aircraft
12S and 14S aircraft need a UBEC rated for the full charged battery voltage.
Clean power for electronics
A dedicated BEC for the camera, video transmitter or companion computer.
High-voltage UBECs (up to 12S and 14S)
View all 4 →UBECs that accept high-voltage batteries, up to 12S or 14S.
4 products from 3 manufacturers
Maytech 75V Convert to 5V UBEC DC-DC Module Power Supply for Receiver
ZeroOne OneUBEC Power Supply
Holybro UBEC 12A (3-14S)
- Weight
- 47.8 g
Maytech 75V-12V UBEC
UBECs for 2S to 6S
View all 13 →UBEC and BEC modules for 2S to 6S batteries.
13 products from 7 manufacturers
What to check before you buy
- Input voltage
- Rate the UBEC for the battery's full charged voltage, not the nominal voltage.
- Output voltage
- Check the output options (5 V, 6 V, 7.4 V, 8.4 V or 12 V) against your servos and electronics.
- Continuous current
- Add up the current your servos and electronics draw and leave headroom for servo stall current.
- Switching or linear
- Switching UBECs run cooler at high input voltage; ask about electrical noise near receivers and GPS.
- Size and cooling
- Check dimensions, weight and whether the module needs airflow.
- Wiring
- Check the input and output leads and connectors, and the wire gauge for the current.
UBECs FAQ
What is the difference between a BEC and a UBEC?
A BEC is a voltage regulator; UBEC usually means a standalone switching BEC, separate from the ESC.
Do I need a UBEC if my ESC has a BEC?
Not always. Use a separate UBEC when servos or electronics draw more current than the ESC's BEC supplies, or at high input voltage.
How much current should the UBEC supply?
At least the total continuous draw of everything it powers, with headroom for servo peaks.
