RE: Copperhead Aviation Venom 45-30
I had exactly the same problem. Although initial tests on the stand where spot on, I was talkled into getting a 5 cell 6V battery. As soon as I put the 5 cell on, the V45 just popped and would not run. I thought I buggered something up but in desperation I switched back to my old 4 cell pack and miraculously the problem was gone! I now use the 5 cell pack for driving the the 7 sevos only.