Nintendo’s original Game Boy had how much battery life?

For less than the original price of a Game Boy ($89.99), I now have a device that's preloaded with over 5,000 retro games, has a 4K screen, and that I can take anywhere I damn well please.

But while there were technically such things as mobile games, the Game Boy was the first device to actually make the experience enjoyable in a way people didn't even know was possible at the time (1989).

It wasn't backlit, it wasn't in color, and it was pretty heavy, but who the hell cared? You could play Tetris on it!

How long could you play on that original Game Boy before it'd tucker out?