This Small and lightweight UBEC features a High efficiency switch mode design providing better heat dissipation when compared to linear voltage regulators. The shielded PCB design and output EMF coil makes helps provide a stable and low noise voltage output. This UBEC also features built-in reverse polarity protection.
Specs: Input: 6V-23V (2-5S Lipoly, 2-6S Li-Fe or 5-15S NiXX Battery Pack) Output: 9V/4.5A (Less than 50mV peak to peak voltage @ 2A) Dimension: 38mm x 13.6mm x 20.7mm(LxWxH) Weight: 12.9g (wires included)
Something to consider when using this device. Output voltage/current is stated as 9Volts/4.5Amps. Assuming it can provide its full specification, this is an output power of 40.5 Watts. If we assume that this device is around 90% efficient, then the input power would be at least 45Watts. This means that a 6Volts input would need to be able to source a current of at least 6.75Amps to be able to achieve the output specification and an input voltage of 23Volts would need to be able to source a current of at least 1.76Amps. This is assuming that the given specification for the device is correct.
People should caution. This UBEC has 9v output and most servos (90% ) can handle 6v max. For most people this UBEC would destroy their servos in an instant. Check with your particular servo specs to see if it has the latest high voltage capability.
I have a Dualsky 2500mah transmitter lipo battery in my JR 9XII with 2.4ghz module. My dad has one also in his DSX9/9303. I havnt had a problem with mine. Had a slight hiccup with his, but its working perfectly now with lipo tx batts. :)
So it works... *)
No Luke, I'm trying just to put you at your place, your switching mode answer was out of context. That's the problem, the specification states wrong input, I raised a flag. Consider this: "voltage drops" (unless a voltage multiplier).
Tell you what, lad, since you're not willing to do your homework. Google this: "In the event that the Input voltage falls below the desired output voltage, the BEC output is essentially equal to the Input level. BEC cannot output more voltage than the battery it draws from." You will find a CastleCreations 10A/5-9Vout/5-25Vin BEC. Why this one, here, be more special? It's not a sepic nor a split-pi, it's just a few dollars BEC.
Anyone bought one and tested it? Yes its possible to get more out than you put in but it must have a boost converter or sepic. So get one and put it on the bench then post the results. If it does boost the output its a bargain!
This answer posted from the other 9v UBEC listed its 2.5 amp, posted by rustynail " I bought this since it had been described as running on 2S (6V-8.4V) and delivering 9V regulated DC - at least this is what I thought reading the description. Well at least mine doesn't up-convert. The output voltage is ~10V with an input voltage of larger than 11V. Once the input voltage drops below 11V then the output voltage goes down as well (aprox. by the same margin). When input reaches ~4V output goes down to 0V. Now I have the same question: what to do with it as it seems to supply regulated nominal voltage for 3S (fully charged) up to 6S?"
so I guess that answers it it an SBEC without boost convertor or sepic. If the voltage is lower than the intended 9v it will only pass through the lower voltage. Still a scientific test would be better. Anyway either one looks a good for a FPV camera.
Dieser UBEC macht für mich wenig Sinn, zu umständlich.
Wieso nicht ein RX z.B. ORANGE bis 10V und echte HV-Digital-Servos bis mind. 8.4V, dazu ein separater 2S-Lipo für die Empfangsanlage, die stärkere Lösung. Wenn schon Umstellung auv HV (höhere Spannung), dann gleich der direkte Weg.
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com entrada 12,6v 3s lipo
fiz teste de corrente 4,5a a tensão subiu para 9,37v e fica cortando e caindo para 5v
input 12,6v 3s lipo
I test current of 4.5 the tension rose to 9.37 v and is cutting and falling to 5v
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It might be great with 3-6S, but this ubec doesn't work as expected (and advertised) with 2S: At 7.9V input, output is only 7.5V.
Don't throw your money on this piece of crap.