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Old Jan 28, 2009, 10:07 PM
JimDrew is offline
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Xtreme Power Systems
Lake Havasu, AZ
Joined Jun 2005
16,935 Posts
Look around on the forums. This issue has been discussed for months. We did testing ourselves and the higher the input voltage, the lower amperage output UNLESS you program the output voltage to be higher than the default 5.1v. The BEC is completely unusable with our system on a 4S Lipo in the Hobby Lobby F-5 jet (5 micro servos) when using 5.1v output. Setting the output to 5.7v or higher allows enough current to drive the servos. We tried 4 different Castle BECs, all with the same results.

There is a memo about this on Castle's website, where they specifically state a reduced output current when using more than 12v of input voltage.
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