I will be more than happy to replace an electric pump anually. I currently have a hand crank pump, and I HATE it. You just turn, and turn, and turn. I bought an Aeroworks Edge 540, and the tank in it is HUGE. I feel like it takes 15 minutes just to fill the thing up. After it's full, I am about to worn out to fly (just kidding, but it does wear me out). I had an electric pump, and it went out. I took it apart, and it seemed to me that the motor just didnt have what it took to spin the gears any more. That is when I bought the manual. I will still keep the manual in my flight box just in case, but I am buying another electric pump this week.