Bigga-Bazza! is an object in the Banjo-Kazooie series. It is the battery the Hag 1 uses, and is a more powerful version of the regular Bazza batteries. The Hag 1 requires two Bigga-Bazzas to function properly. The front shows the "Bigga Bazza!" logo which says that it is "Max Power." The side contains a graphic of a man holding a Bigga-Bazza proclaiming "They're diamond!", and under that, "Made by Rareware."
During the final boss fight in Banjo-Tooie, Banjo and Kazooie must destroy both Bigga-Bazzas that the Hag 1 uses by infiltrating it with a Clockwork Kazooie Egg through the exhaust port in order to blow them up and cause it to cease function. They also leave a very severe burning smell when destroyed, as evidenced by Gruntilda's remark once one of the batteries was destroyed.