
A BATTERY.
Yes.
Breaking Bad Season 2, Episode 9

Uh, I took the liberty
of removing the BATTERY
Breaking Bad Season 5, Episode 13

And there's even a backup BATTERY
when the power goes out.
The Big Bang Theory Season 6, Episode 21

A little mercury switch,
9-volt BATTERY,
Breaking Bad Season 2, Episode 10

This doesn't look like
any BATTERY I ever saw.
Breaking Bad Season 2, Episode 9