bids are invited for drone frame - carbon fiber and geprc equivalent , stack - flight controller , brushless motors - kv 2300 kv motor or equivalent motor type brushless outrunner motor for drone voltage support 4s to 6s li ion , propeller - 5 inch triblade hq prop or gemfam equivalent blade count 3 material durable polycarbonate , li-io battery - 3s battery nominal voltage 25.2v , receiver - protocol express lrs , radio contorller - channels , smart battery charger - input voltage imax dc 7 30v and output voltage 200w , spare li-ion cells - cell type cylindrical li ion cell molicell p28 or equivalent , hard case - portable and waterproof easy to handle , hard case total quantity : 15