Milwaukee 48-11-1852 M18 18V Lithium-Ion Battery Pack

48-11-1850 2 pack M18 XC 5.0 Ah Battery Pack delivers up to 2.5X more runtime, 20% more power and 2X more recharges than standard lithium-ion batteries. The lithium-ion battery pack features superior pack construction, electronics and performance providing users more work per charge and more work over pack life than any battery on the market. The rechargeable battery also delivers users with 5.0 Amp-hours of runtime. Each battery pack is durably built for heavy-duty use, runs cooler and performs in climates below 0°F/minus 18°C.