The Snap-on 18V MonsterLithium 5.0Ah Slide-on Battery CTB185 with Dual Side Latches K51 is a high-quality power tool accessory designed for automotive use. This battery pack, featuring a 18V voltage rating and a 5.0Ah capacity, is a reliable and durable option for powering various tools and equipment on the go. The Snap-on brand ensures a level of reliability and performance that is second to none, making this battery a valuable addition to any automotive toolbox.