Lectron Pro 11.1 volt - 1350mAh 30C Lipo Pack with EC3 Connector Great for the HobbyZone Super Cub and tons of other HobbyZone, E-Flite and ParkZone Planes! Plug 'n' play compatible Includes EC3 connector on the discharge leads Perfect for the Blade 300 X BNF and Mach 25 FPV Racer BNF Basic!