The DEWALT XRP® Li-Ion Battery is small but powerful and compatible with all your 18V DEWALT tools that require stem batteries. At just 2 lbs., this model is as compact as it is convenient. For your added benefit, the DEWALT XRP® Li-Ion Battery battery is also backwards compatible with other DEWALT tools. Enjoy the convenience and the power of this lightweight rechargeable battery, and get the job done faster. You can depend on the high-performance lithium-ion battery to keep your tools powered until the job is done.