Genuine DEWALT 20v DCB210 Max XR 10Ah Lithium-Ion Battery.

Product Overview
Power your 20V MAX* tools with (2) high-capacity 20V MAX* XR® 10Ah batteries that feature long runtime, advanced performance, and a 3-LED Fuel Gauge System that delivers immediate feedback on your state of charge.
LONGER RUNTIME: 10.0Ah (200 watt-hour) capacity helps increase productivity
VERSATILE USE: Compatible with 20V MAX* tools and chargers
KNOW WHEN TO RECHARGE in advance with included 3-LED Fuel Gauge charge indicator
Please consider carefully!