How long does it take hazard lights to kill a vehicle's battery?

This made me think of "Blade Runner" where Deckard is asked by the Replicant
Leon:

"How long do I live?"

Deckard replies:

"4 years" and the Replicant says

"Longer than YOU!" and proceeds to try punching his lights out.

One of the greatest lines in all Sci Fi movie history.

--
Bobby G.