FANDOM


The Z-battery was an object harnessing Z-radiation which was possessed by the Third Doctor before leaving it behind in UNIT HQ after failing to use it to jump start his TARDIS during his exile. The Master plotted to combine the radiation within it with O-radiation on Oseidon to create ZO-radiation only to be thwarted by the Fourth Doctor. (AUDIO: The Oseidon Adventure)

Community content is available under CC-BY-SA unless otherwise noted.

Fandom may earn an affiliate commission on sales made from links on this page.

Stream the best stories.

Fandom may earn an affiliate commission on sales made from links on this page.

Get Disney+