RIDGID Lithium-Ion batteries are equal or less weight than NiCad batteries and run up to 160% longer than their Ni-Cad counterparts. With fadefree power over its lifetime, the lithium ion battery has the best energy-to-weight ratio, no memory loss, and a slower loss of charge when not in use compared to the NiCad Batteries. With RIDGID Lithium-Ion, your first use is as powerful as the last. RIDGID cordless offerings range from hitthe-ground-running combo kits and tool kits with chargers and batteries. This range of choice helps you build a lean, capable, custom-tailored cordless tool system with everything you need and nothing you dont.