RYOBI 18V ONE+ System introduces the next generation in lithium-ion performance. LITHIUM+ batteries improve the performance of RYOBI 18V ONE+ power tools beyond simply extending the runtime. This compact battery improves the performance of Ryobi 18V ONE+ tools by increasing torque up to 15%. They provide up to 35% more runtime, hold a charge 4X longer and are 45% lighter weight than Ni-Cd batteries. LITHIUM+ batteries have extreme weather performance to continue work in harsh conditions and an on-board fuel gauge to "Check Your Charge" before the work begins. LIHTIUM+ batteries provide fade-free power for maximum performance throughout the charge. Best of all, like all 18V ONE+ batteries, LITHIUM+ batteries work with every Ryobi 18V tool ever made.