Thanks to the BLACK+DECKER POWERCONNECT 18V battery platform, you can use one battery for more than 70 different BLACK+DECKER 18V (garden) tools and stick vacuums. If you purchase a battery with this system, you can also use this battery for other tools from the same platform. That saves costs. Or you can buy BLACK+DECKER 18V (garden) tools with an included battery. You'll already have the battery if you need a new lawn mower or drill in the future.