| Geography | |
|---|---|
| Location | Bass Strait |
| Coordinates | 40°27′00″S 148°10′12″E / 40.45000°S 148.17000°E |
| Archipelago | Passage Group, part of the Furneaux Group |
| Area | 2 ha (4.9 acres) |
| Length | 100 m (300 ft) |
| Width | 20 m (70 ft) |
| Administration | |
Australia | |
| Tasmania | |
The Battery Island, part of the Passage Group within the Furneaux Group, is a 2-hectare (4.9-acre) granite island, located in Bass Strait south of Cape Barren Island, in Tasmania, in south-eastern Australia.
Recorded breeding seabird and wader species include little penguin, Pacific gull, silver gull, sooty oystercatcher and Caspian tern.