Proton AA

The Proton AA is a treasure found in Pikmin 2. This treasure is actually just a AA Duracell battery. It is found in the 4th sublevel of the Submerged Castle, near some poison pipes and Bomb Rocks held by Volatile Dweevils and Careening Dirigibugs. It is the 157th treasure on the List of Pikmin 2 treasures in the NTSC version and the 155th in the PAL version.

Captain Olimar's Journal
"This object resembles the first treasure I found on this planet, so it holds certain sentimental value to me. However, I've just noticed that the size it slightly different. Sometime, I should take the time to read my previous treasure log book. It's good to reflect on the past sometimes..."

Sales Pitch
"Some enigmatic energy unknown on Hococtate is trapped inside: who couldn't use more energy?"