Had my fc40 for a few months now and I'm having problems every time I try and disconnect the battery, it's very very tight when trying to unplug it. So much so that the casing on the negative lead from the phantom has all ready torn and I have had to put some tape round it, and now it's starting to go at the plug. I only use the standard phantom battery but it just seems impossible to disconnect, is there some sort of knack to disconnecting easy. Any help would be great before I end up with a phantom I can't fly.