Freedom - Powered by Chicago Pneumatic! HIGH PERFORMANCE - The new Chicago Pneumatic high performance 20-Volt CP20XP Lithium-ion battery provides twice the runtime of conventional batteries. Built for maximum durability, the Lithium-ion battery will keep you up and running longer having a wide temperature working range and thermal/current overload protection. The individual cell monitoring enables extra protection during charge and discharge. No Hassle" for tools and batteries) - this is valid for USA, Canada and Mexico only. In order to benefit from the 1 year "No Hassle. registration of each tool on the website is required within 30 days of the original purchase date. This is the 20-volt battery ONLY.