The Industry's Most Innovative Battery. SKIL's patented, industry-leading PWRCORE 12 Lithium Battery contains an innovative temperature management system that results in both longer run time and extended battery life. Each cell is surrounded by revolutionary phase change materials to keep the battery cool , all so you can power through any project. 2.0Ah battery with PWRASSIST Mobile Charging USB port 33% longer run time than 1.5Ah batteries Longer run time and battery life with PWRCORE 12 Lithium Battery Green LED fuel gauge displays battery capacity with after-glow Pair with any SKIL PWRCORE 12 product Mobile Charging output: 5V 1.0A