Power up your toolkit with this PWR CORE 40 lithium battery bundle from Skil. It includes a 6Ah battery for extended runtime and a 2.5Ah battery for convenient fast charging, fueling all your 40V tools. The 6Ah PWR CORE 40 battery uses patented cooling technology to wrap each cell, keeping the battery powering on 25% longer with 2X the battery life. It fuels the high performance of Skil's PWR CORE 40 system for gas-like power without the noise, fumes or frustration. This workhorse battery pairs with all Skil 40V tools. For those times when you need a quick recharge, the 2.5Ah PWRCore 40 lithium battery charges 0-30% in just 15 minutes. It features the same innovative cooling technology for impressive performance from a conveniently compact battery. LED charge indicators on both models let you monitor status, so you always know how much runtime you have left. With a high-capacity 6Ah battery for extended projects and a fast-charging 2.5Ah battery for flexibility, this bundle keeps your tools powered up and ready to get the job done.