The RYOBI 18V ONE+ System introduces the very best value in lithium-ion performance. This new battery provides up to 2X runtime, holds a charge 4X longer and is 20% lighter weight than 18V ONE+ Ni-Cd batteries at a cost far below similar competitor batteries. Lithium-ion batteries provide fade-free power for maximum performance throughout the charge. Best of all, like all 18V ONE+ batteries, these new lithium-ion batteries work in every RYOBI 18V ONE+ tool ever made.