Get industry-leading performance and the power of gas in PWRCORE 40 Lithium. The PWRCORE 40 5.0Ah Lithium Battery uses patented technology that results in longer run time and longer battery life. Each cell is surrounded by temperature management material to keep the battery cool and powering on. Use the 40V lithium battery to power up all SKIL 40V tools. PWRCORE 40 LITHIUM BATTERY - This 5.0Ah 40v lithium battery fuels the power and performance of the PWRCORE 40 system. LONGER RUN TIME & BATTERY LIFE - Industry leading PWRCORE 40 lithium battery technology wraps each cell with cooling material to keep the battery powering on for 25% longer run time & 2X battery life. 30-MINUTE CHARGING - Auto PWRJUMP charges the battery in just 30 minutes (based on a 5.0Ah battery). ALWAYS KNOW CHARGE STATUS - Green LEDs show status, so you always know how much charge is available. ONE BATTERY, MANY TOOLS - Pairs with all SKIL 40V power tools.