Milwaukee 48-11-1832 High Capacity 18 Volt Battery, 2 Pack Up to 50% longer run-time with no memory effect Consistent "fade-free" power from the first cut to the last Lightweight - 18V power with 14.4V NiCd Battery weight Includes two (2) 48-11-1830 18V LITHIUM-ION Batteries Battery requires LITHIUM-ION/NiCd Charger 48-59-2818