Bright Ideas

Maralys has a rival at school, and it's getting under her skin. Susan Ashby's father owns a technology company, and Susan uses that to her advantage during a class presentation. Maralys decides to show Susan how to do things Maker Club style. After a hectic trial-and-error period involving tea and lemon juice, not to mention a ton of pennies, Maralys assembles her own battery. How will her battery perform for the class presentation?