Laptops usually run on a single battery. Some run on an external AC/DC. This could also charge the battery, while supplying energy to the laptop itself. Laptops are capable of doing the same tasks as a desktop PC, though at times they may be a little less powerful. They contain all the components that are present in a conventional PC in a miniaturized size
IBM ThinkPad R60e Battery : Battery for ThinkPad R60e
This is a Brand New 6 cell Li-Ion Battery for IBMLithium Ion System Battery is a battery that supports the ThinkPad R60, T60, series Notebooks. Compatible ThinkPad Models: ThinkPad T60: T60 Type...
This is a Brand New 9 cell Li-Ion Battery for IBMLithium Ion System Battery is a battery that supports the ThinkPad Notebooks. Compatible ThinkPad Models: ThinkPad Z60m: Z60m Type: 2531, 2532, 2530...