My friends dad is flying from states to my country, where i can't get any batteries. So i want to ask him to buy one for me and bring it. The question is, besides the fact that battery should be transported on a plane baggage, how charged do they arrive from DJI? Because as far i as i know is that they should be 50% charged when carried on plane. If it arrives to my friends dad 100% charged, i wont be able to ask him to start discharging it before flying because they wont let him through - and etc. - he will just not bring it to me.