Another ??? I have been flying almost 2 years now. I have always used 4AA rechargeable batt.(= 4.8v) for my Receiver. The other day I visited a man that has been into RC Planes for 30 years. He builds all his from scratch and his specialty is biplanes. The largest one has a 4m WS.(ca. 12ft) Anyway he told me he always uses 5 recharg. cells(6v, but more than 7v when fresh charged) and no voltage regulator. I thought you would burn the servos up with more than 6v?? He said the servos can handle it and that digis put more strain on the batt. anyway . He also mentioned if you have several different servo inputs at one time that they get less volts anyway and with his servos on such long extensions due to the size of plane it seems logical to me. Any electrician/flyers out there for a second opinion?