Nothing. Everything is included in the box.

The T-28 Trojan was a piston-powered U.S. military trainer used in the 1950s through the early 1970s. The original Trojan had a frameless canopy and an impressive engine that gave it a top speed exceeding 280 mph.  Now you can pilot a ready-to-fly, electric scale replica of this historical warbird. Equipped with an outrunner brushless motor and 3-cell 1800mAh Li-Po battery, ParkZone’s T-28 Trojan is a powerful, high performance aircraft. The Trojan is perfect for the experienced pilot who would rather spend his time flying a mighty scale replica airplane than building one.

The T-28 Trojan is also available in a Plug-N-Play® version. The convenience of a Ready-To-Fly and the versatility of an Almost-Ready-to-Fly—just plug in your receiver and fly, using any major brand of receiver and transmitter. Simply attach a propeller and plug in a receiver of four channels or more, and it’s ready for action.

Charge-and-Fly™ convenience, outstanding flight performance and beautiful scale detail—with the T-28 Trojan you get it all.

Warning: Never plug the balance lead of your Li-Po flight battery directly into the receiver. Doing this will likely result in permanent damage to the receiver and to the battery.