The 2×12.0 Ah power tool battery pack features advanced ARC Lithium™ technology for superior performance. Equipped with an upgraded fuel gauge, it allows you to easily monitor remaining power in 20% increments. Designed with patented Keep Cool Cell Technology, it prevents overheating and extends battery life, making it ideal for long-lasting, efficient use. This power tool battery pack is built for durability and reliability, providing the power you need to tackle any job. Charger sold separately.