Contractor-grade batteries with great battery life and great savings! Top-performing TopCell battery gives you excellent service and is designed to fit most name-brand cordless power tools. Manufactured with premium cells for outstanding performance. 10-pt. spot welded contact points allow 25% better current flow than standard plates. Impact-resistant, custom-molded case. Battery Grade: Contractor, Battery Amp/Hour: 2.2, Volts: 18, Impact Resistant: Yes, Dimensions L x W x H (in.): 5 x 3 1/2 x 4 1/2