Frobisher Battery is a former gun battery at Staddon Heights, Plymouth, Devon.

The original battery at the site, Twelve Acre Brake Battery, was completed in 1867 with positions for three guns.

[2] It was armed with one RML 12.5-inch 38-ton gun, which was intended to be used to bombard enemy ships attempting to enter Plymouth Sound.

[1] The battery was disarmed in 1903,[1] and later infilled with earth during the late 20th century.

The site is now overgrown, but much of the battery survives as a buried feature and is protected as a scheduled monument.