|Treasure Hoard Number|| 157 (NTSC)
|Series||Mystical Energy Series|
|Maximum Carriers||12 Pikmin|
The Proton AA is a treasure found in Pikmin 2 which is actually just a AA battery. It is found in the fourth sublevel in the Submerged Castle, near some poison pipes and Bomb Rocks held by Volatile Dweevils and Careening Dirigibugs.
"Some enigmatic energy unknown on Hococtate is trapped inside: who couldn't use more energy?"