Thank you for shopping to our store! Friendly reminder to all buyers, Strictly No Cancellation of orders (All Sales Final) once you placed the order. Please do check all descriptions and specifications of the item before you purchase. :) RIDGID introduces the 18-Volt Lithium-Ion 4.0 Ah Battery Pack (2-Pack). These batteries get up to 4X the runtime of standard lithium-ion batteries and are built for high performance and are protected from overheating, overloading and overcharging through their Triple Protection Electronics design. Their chemistry allows for maximum performance in temperatures as low as -4 degrees and up to 120 degrees F, so you can confidently use them year-round. Chargers sold separately.Up to 4X more run time compared to standard lithium-ion batteriesOver 2X longer life compared to standard lithium-ion batteriesBest-in-class extreme weather performance in temperatures as low as -4 degrees and up to 120 degrees FOnboard fuel gauge lets you know your battery level before you start a job100% Compatible: Works with all RIDGID 18-Volt Batteries, Tools, and Chargers3-year manufacturers warrantyIncludes: (2) AC840087 4.0 Ah Lithium-Ion BatteriesCharger sold separatelyRIDGID: Powerful. Durable. Professional.California residents see Prop 65 WARNINGS THIS ITEM CANT BE SHIP TO CALIFORNIA.