WORX WA3644 PowerShare Pro 20V 4.0Ah High Capacity Battery with Management System & Intelligent Power Control

High-Capacity PowerShare Pro Battery - The Worx 20V 4.0Ah PowerShare Pro battery WA3644 offers extended runtime for all your Worx tools, ensuring you can work longer without interruptions. Battery Management System (BMS) - With Intelligent Power Control and BMS Technology, this battery adapts to the demands of precision tasks, maintaining safety and enhancing the longevity of your tools. Durable and Resilient Design - Engineered with unique heat storage material, the Worx battery is designed to absorb and store heat efficiently, protecting against impacts and prolonging battery life. Optimized Power Delivery - The Worx 20V battery features communication technology that adjusts output for optimal power delivery, maximizing the performance and runtime of your tools. Real-Time Power Indicator - Stay informed on the job with the on-board battery indicator that provides real-time power status, so you can manage your work efficiently with timely battery swaps or recharges. Your battery pack is UNCHARGED. To ensure full capacity of the battery, completely charge the battery in the battery charger before using your power tool for the first time.