Hobbypower Extended Dual Batteries Carbon Fibre Mount & Wiring Cable for DJI Phantom Quadcopter XT60 Power adapter for 2 batteries Powered up by two batteries, This will effictivly help you get longer fly time Both side plate was Accurate same weight, will not have balance problem Make from high quality 3K Carbon Fiber*2, Package including: Carbon Fiber Mount plate,Magic Tape *2, Screws*8, XT60 Cable*1, Hobbypower Strap*1