Stanley Fatmax SFMCF800C2K-GB 18V Li-Ion Impact Driver 2 x 1.5ah Batteries + CaseThe Stanley Fatmax V20 18V Impact Driver with 2 x 1. 5Ah Lithium ion Batteries and Kit Box features new and improved battery technology, with no memory effect and minimal self discharge. The V20 Lithium ion battery pack is ready to go to work whenever you are and wherever the job takes you, with an integral battery state of charge indicator for convenient monitoring of battery charge levels. Including a powerful motor providing up to 2,800 RPM, 3,100