The AH-1 Cobra was the first attack helicopter that saw general combat service in 1965/66 (not a proto-type experiment).

The AH-56 Cheyenne gunship made it's first experimental flight in 1967.

Only if the battery is rated at 11.66V.

mAh / 1000 => Ah (4800 mAh = 4.8 Ah)

Ah * V => Wh (4.8 Ah * 11.66 V = 55.97 Wh)

There are several places named Cheyenne in the US:

Cheyenne, Wyoming

Cheyenne, Oklahoma

Cheyenne, Texas

Cheyenne, Kansas

Cheyenne County, Kansas

Cheyenne County, Colorado

Cheyenne County, Nebraska

Cheyenne's name is Cheyenne because that's what her parent's named her.

Carmena Burana