Jon Scieszka 
Frank Einstein and the BrainTurbo (Frank Einstein series #3) 
Book Three

Huge laughs and great sciencethe kind of smart, funny stuff that makes Jon Scieszka a legend. Mac Barnett, author of Battle Bunny and The Terrible Two Frank Einstein (kid-genius scientist and inventor) and his best friend Watson, along with Klink (a self-assembled artificial intelligence entity), create the Brain Turbo to power-boost the human body and help their baseball-pitching pal Janegoodall make the team. But when Klank (a mostly self-assembled and artificial almost intelligence entity) goes missing, they must first rescue their robot pal and stop T. Edison Frank’s classmate and archrivalfrom stealing their latest invention and using it against them!