battery for charging
hello everyone,
I'm a new comer to electric F3A. I have still some problems about E-F3A. One of them is about a battery for charging.
I think there is two ways to charge at an airfield. One way is to use a very heavy battery. Another way is to use a small portable dynamo. Some people in my country take the latter way. I hate a heavy battery, so I think to want to use a dynamo. However I'm not familiar to this way.
Please tell me some suggestions about this. Are there other good ideas for charging anywhere?
thanks
sarashina