Problem with Kool Flight's "Ultimate BEC"

[ShadesOfGray]

Hey,
I purchased this $33 voltage regulator to power some auxiliary systems on 5V from a bigger lipo battery. Now I've got a 11.1V lipo hooked up to it on the input, and the output is only 0.8 volts.

Any ideas why this might be happening?

[P.S. This voltage regulator is basically brand new.]

Thanks,
-Will

[Tomapowa]

Hey,
I purchased this $33 voltage regulator to power some auxiliary systems on 5V from a bigger lipo battery. Now I've got a 11.1V lipo hooked up to it on the input, and the output is only 0.8 volts.

Any ideas why this might be happening?

[P.S. This voltage regulator is basically brand new.]

Thanks,
-Will

Hi Will,
I've owned (and blew up) many a KoolFlight's BECs (http://koolflightsystems.com/ultimatebec.htm) and never really had any issue (except for when I connect reverse polarity to the unit... can you say Pop!?). How are you measuring this voltage? Is the BEC output also connected to your receiver? Did you accidentally apply power backwards (reverse polarity like I did) ?? :cool:
If this appears to be a real problem, I would send it back to Jeff ASAP... don't mess with it. He's pretty cool and should make things right. In the past I've sent a UBEC which I roasted back to him and he kindly fixed for a minimal charge.

I've also used Medusa BECs (http://www.medusaproducts.com/BECs/BEC%20Main.htm) in the past with very good success. Medusa and KooFlight BECs can tolerate high input voltages such as 40-45 volts (12s). The downside of Castle Creation's BEC (http://www.castlecreations.com/products/cc_bec.html) is the limiting input voltage (max of 25v), but they do provide a max of 10 amps output where others are typically 3-5 amps. The programmble nature of the CC BEC scares me too, as I'd rather use a simple mechanical jumper to change output voltage.