The battery was in use in the war with Spain in 1762 when there was two 24 pound guns mounted here. The ability of the battery to give cover to troops making their way to the Kings and Queens Lines was approved by the Chief Engineer William Green in 1770. The battery gives easy access to the Princess Lines and the Princes Lines which are above the Kings And Queens lines respectively. By 1859 the two guns at Hanover Battery were assisted by additional two carronades which were also 24-pounders.[2]
Beneath the battery is Hanover Gallery and this is dated 1789. Both the battery and gallery were named for the Hanoverian regiments who fought as part of the defending forces during the Great Siege of Gibraltar from 1779 to 1783.[2]
The battery and gallery are part of the North Front defences of the Rock of Gibraltar together with Forbes' Battery, Couvreport Battery, Bomb Proof Battery and the tunnel system. The northern defences consist of lines or batteries known as the Queen's, King's and Princes Lines.[2] These lines are accessed by underground galleries where soldiers could shelter or travel safely behind enemy fire.
This is a Class A listed building as designated by the Government of Gibraltar's Gibraltar Heritage Trust Act of 1989.[3] The buildings are not open to tourists (in 2013) because of the poor state of the buildings.[2]
