antenna set is cheapest one from ali. note that you will need to resolder wire insert in sma jack, otherwise wire could be cut by display module, there is qiute tight place. or look for 90degree sma pigtail for mavic remote, they'll fit without any corrections I believe.
as for battery - I just solder servo connector in parallel and use 1p 10Ah gens lipo cell, its enough to fly about 8-9 mavic batteries (20min each) continiously charging iphone.
then charging both as normal lipo to 4,2v no matter that remote bat is HiVolt 4.35 cells, its even better for batttery to be undercharged a bit.
cheers
as for battery - I just solder servo connector in parallel and use 1p 10Ah gens lipo cell, its enough to fly about 8-9 mavic batteries (20min each) continiously charging iphone.
then charging both as normal lipo to 4,2v no matter that remote bat is HiVolt 4.35 cells, its even better for batttery to be undercharged a bit.
cheers