- Maximum Input Voltage: 35 V
- Minimum Input Voltage: 5.5 V (goes into bypass mode below 5.5 V)
- Output Voltage: 5 V
- Weight: 20 g
- Output Current: 3 A continuous / *5 A up to 5 minutes
- Dimensions: 1.25 x 1.75 x 0.38 in
- Type High efficiency Switching Voltage Regulator
- Input / Output leads 12 and 8 inches in length
- Output servo connector Universal
The Ultimate BEC eliminates the need for a separate battery pack to power your Rx and servos.
Use the Ultimate BEC when:
- Your cell count and / or number of servos exceed your speed control's ratings.
Simple to install:
- All you do is solder the UBEC input leads onto your speed control power input leads.
- Plug the UBEC into your RX where you would plug in your Rx battery. - OR - Plug the UBEC into an standard on/off switch harness.
- Make sure you disable your speed control's BEC.
- It's that simple!
What makes the Ultimate BEC different from the BEC in my speed controls? Speed controls use a linear voltage regulator to reduce your battery pack voltage to 5 volts. The challenge with this kind of system is that it is limited by the input voltage and output current. Each ESC has a limit as to the amount of watts of heat it can dissipate. The Ultimate BEC is a switching power supply where input voltage and output current are independent of each other.
Will the Ultimate BEC cause any radio interference? Absolutely not. As a matter of a fact, most speed controls put out way more "noise" than the UBEC. The UBEC has been designed on a custom copper flooded board and utilizes a shielded coil to eliminate any "noise". Most importantly, any "noise" that radiates from the UBEC is not relevant to the bands within our radio systems.
How do you keep your battery from running too low? Most speed controls have a low voltage cutoff feature to keep you from running down your battery too low. Most low voltage cutoff features cut power to your motor between 4.7 to 5.5 volts. The UBEC will go into bypass mode at 5.5 volts. Thus, your Rx will still get power from your battery.
How many servos can I run on the UBEC? Servo current vary by brand and type. However, 8-10 servos should be no problem. The main thing to remember is that the UBEC is rated for 3 amps continuous / 5 amps peak.
How many cells can I use with the UBEC? 29 cells is the maximum. We can offer an upgrade for higher cell counts (up to 45 volts) ($40).
Are there any applications that the UBEC would not be a good choice? I would not suggest that you use a UBEC in any plane that you run a GREAT risk in blowing out your source battery. You will have to make the choice for yourself. (The best example of when not to use a UBEC would be a hotliner that is pulling extreme current from the source battery.) I use UBECs in all my larger planes except my hotliner which pulls about 90 amps. I'm very comfortable with my source batteries in my gliders as the motor only draws about 65 amps for 45 seconds or less.
*22 gauge wire and universal servo connectors are not designed for 5 amps current.