Being new to this I hope that you can answer a question about batteries. How do you tell the condition of a nicad battery you plan to use. If it takes a full charge is it a good battery. I would hate to send my plane up only to get half way through a flight and have the battery go dead. I know that a wet cell can have a full charge, say 13 volts but fail a load test leaving you sitting. So how do you load test a nicad or similar reciever/servo battery.