Product DescriptionVST Technologies Inc., is a company specializing in the design of portable peripherals for laptop and desktop computers. The VST product line includes FireWire Hard Drives, USB Floppy Drives, expansion bay storage devices, such as the Zip100 drive for select IBM, Fujitsu and Apple laptops, SuperDisk drives for select Apple and IBM laptops, as well as hard drives, power adapters, chargers and batteries for the Macintosh PowerBook series.Don't get caught without battery power. Enjoy added portability and increased usage time to your PowerBook with Apple's Li-Ion Battery for the 1999 Version G3 PowerBook Series.