The 20 V MAX starter kit includes our 3 Ah compact battery and charger. Using the latest in lithium ion technology, this battery provides 3 Ah capacity in a compact form, offering ergonomic benefits for extended power tool use. The three-LED fuel gauge system on the battery allows you to instantly check battery state of charge. The included charger features quick charging with a multi-function LED indicator to display charging status, when to replace battery pack and battery temperature.