4x23 - Dragon Ball Z: Dragon Box

Bulma completes an Artificial Human emergency shutdown controller, a beam of hope to save the earth. Bulma then rushes to the Kame House with it. As the unimaginable battle between Piccolo and No. 17 continues, things gradually lean in No. 17's favor. While a fighter like Piccolo loses his stamina rapidly every time he uses up some power, the Artificial Humans never grow fatigued!