Ergonomically designed for optimal hand grip to prevent slippage, light weight, and easy to assemble/disassemble for transport ease. Suitable for fixed wing airplanes or helicopters, engine can be started with a simple one hand press on the button.- Suitable for up to 50cc gasoline engine or 300 class nitro engine.- Designed for user replaceable, common 450 heli sized3S1P 1900~2300mAh/16c lipo batteries. Fully charged battery iscapable of 500 starts and beyond. Battery packs are charged with anyT-REX 450 battery chargers.- Starting adaptor includes double one way bearing design.- High efficiency motor providing high starting power, and low reactingforce.- LED battery voltage indicator and over-discharge protection circuitry.- Battery undervoltage protection.- Overheating protection- Protection against stalling by flooded torque overloading engine.- Suitable battery:Li-Po 3S1P 11.1V 1900~2300mAh 16C and above(maximum size 112x35x24mm)- No load rotation speed:2300rpm- Battery undervoltage:10.8V- Quiescent current:0 mA- Motor overheat protection:80°C- Decelerate gear ratio:5.3:1- Size:80x60x390mm- Weight:700g (w/o battery)Accessories:- Starter body x 1- Helicopter Starter Shaft x 1Option: Battery:3S1P 11.1V 1900~2300mAh 16C and above Li-Poly battery