The Milwaukee M18 X2 2 Pack XC5.0 Ah Starter Kit includes two 5 Ah lithium-ion batteries with a RedLithium technology for long-lasting power. The charger is a 48-59-1852B OEM Battery Charger designed for 18V Milwaukee M18 batteries. This starter kit is ideal for power tool enthusiasts who require reliable and high-quality batteries for their workshop needs. With a compact design and a weight of 1.7 lbs, it is convenient to transport and use for various projects around the home and garden.