The Yell Battery (きあいバッテリー?) is a treasure exclusive to the Japanese version of Pikmin 2. It is a National Hi-Top C battery. It is found in Perplexing Pool in the same spot that the Optical Illustration and Abstract Masterpiece are found in the US and European versions, respectively.
Collecting the treasure
The guide is the same as for the Optical Illustration.
Google Translate: A highly developed computer has an ego. The machine also exerts more power than its original performance with enthusiasm and guts. In other words, work until the spirit wears down and your heart breaks. It seems that the president was quite influential before I knew it. I think it's best for people and machines to work freely
Google Translate: According to measurements, there should be little energy left. However, I will come from one to the next. The energy that can be extracted from matter is finite, but the energy of the heart is infinite. Machines also have spirit and guts!