LITHIUM-ION POWER: The power and charge of lithium ion batteries decline at a much slower rate than Nickel-Cadmium or Nickel-Metal Hydride batteries, making them perfect for long-term use and storage; This battery resists self-discharge PART OF THE DREAM TEAM: This battery is designed to fit onto the OEMTOOLS 24660 3/8 Drive Cordless Drill, the OEMTOOLS 24661 3/8 Drive Cordless Impact Wrench, and the OEMTOOLS 24660B 20V Li-Ion Battery Charger CORDLESS JOBS AROUND THE HOUSE: Both the 24660 Cordless 20V Drill and the 24661 Cordless Impact Wrench are great for harder to reach jobs around the house; Avoid the hassle of finding and untangling extension cords for corded power tools SAFE CHARGE: Charge up quickly and easily with the OEMTOOLS 24660B 20 V Lithium-Ion Battery Charger; The charger prevents over-charging, prolonging the life of the battery; Lights on the 20V lithium ion battery charger show when the battery is full LIGHTWEIGHT: Save your weightlifting for the gym; This 20 volt battery pack is lighter than some competitor batteries, making it easier to hold and position; Let the cordless tools, powered by this lithium ion 20V battery, do the heavy lifting