Iflight Thunder H7 Flight Controller2RAW Thunder H7 Flight Controller Brace for 12S Power! Meet the 2RAW Thunder H7, reportedly the first flight controller gutsy enough to handle direct 12S input straight out of the box. If your build philosophy involves strapping the biggest possible LiPo to your quad, this might just be the brain you need. Engineered for durability and the kind of performance that makes your batteries sweat, the Thunder H7 is here to raise the bar (and the voltage).