The Haarbölle battery was built in 1914-15 and was to cover the minefield in the waters of the Grönsund from intrusion from the south.
The battery was armed with three 75 mm. quick-firing steel cannons, and eight 8 mm. machineguns M/1903.
Crew 58 men.
The battery area is today owned by the Vordingborg Municipality.