September 20, 1989: Apple releases the Macintosh Portable, the first battery-powered Mac you could take on the road.
At a time when Tim Burton’s Batman is flying high in theaters, and Madonna is shocking audiences at the MTV Video Music Awards, this ahead-of-its-time product lays the groundwork for Apple’s looming laptop revolution.
Macintosh Portable: The Mac goes mobile
Apple’s development work on a portable Mac actually predates the launch of the original Macintosh. Mac project innovator Jef Raskin envisioned the Mac as a portable computer.
Read more at CultOfMac.com

