I'd like to extend the range of my volador by adding a spare battery to my rack or a bag. I've been looking at some 36 volt cylinder batteries but none I've found have the aviation 2 pin port. My question is do you know of any battery companies that make them? Or if I have to convert them to a 2 pin port is it relatively easy to do ? Also do I have to stay at 36 volts? Can the volador controller handle 48v for example?