Battery Egg

Battery Eggs are a special type of egg found in Banjo-Kazooie: Grunty's Revenge. Bozzeye teaches Banjo and Kazooie how to use them in the Monster Manor of Bad Magic Bayou. The shock they deliver when fired deals a bit more damage to enemies than normal Blue Eggs, but aside from that, they are needed to open special egg tolls within the manor which can only be activated by Battery Eggs; unfortunately, these egg tolls are seen nowhere else in the game, and since there are enemies which are particularly weak against Battery Eggs, they expend their usefulness once the Monster Manor has been completed.