The Skil PWR CORE 20 20V 4.0Ah Lithium-Ion Cordless Battery is designed for high performance and extended usage. Featuring advanced lithium-ion technology, this battery offers superior power and efficiency, making it perfect for a variety of cordless tools. Its 4.0Ah capacity ensures longer run times, allowing you to complete your projects without frequent recharging. The battery is compatible with Skil's PWR CORE 20 system, providing seamless integration with other tools in the lineup. Durable and reliable, this battery is built to withstand demanding conditions, giving you the confidence to tackle any task. Enjoy the convenience of cordless technology with the Skil PWR CORE 20 battery.