RIDGID introduces the 18V Lithium-Ion (1) 4.0 Ah Battery, (1) 2.0 Ah Battery, and 18V Charger. This 4.0 Ah battery will provide up to 3X more runtime compared to the 1.5 Ah lithium-ion battery (AC870015). This 4.0 Ah battery is 10% more compact and 10% lighter compared to the previous model (AC840087). The 2.0 Ah battery will give the user up to 2X more runtime and 2X longer life compared to standard lithium-ion batteries. This battery will be 10% more compact and 10% lighter compared to the previous model (R840086). Best of all, these batteries are 100% compatible with all RIDGID 18V tools and lithium-ion chargers. The included charger is compatible with all RIDGID 18V Lithium-Ion Batteries. Backed by the RIDGID Lifetime Service Agreement, this model includes a 4.0 Ah Lithium-Ion Battery, a 2.0 Ah Lithium-Ion Battery, an 18V Charger, and an operator's manual.