Dewalt XR FLEXVOLT 9Ah Battery, 18V/54V Lithium-Ion

The DEWALT XR FLEXVOLT 18V/54V 9Ah (DCB547-XJ) is a premium-grade cordless battery designed for professionals and demanding users who require maximum runtime, versatility, and power delivery across a broad tool ecosystem. Engineered with advanced lithium-ion technology, this FlexVolt battery seamlessly adapts to both DEWALT’s 18V XR and 54V XR FLEXVOLT power tool platforms, delivering high-end performance and extended productivity on job sites.

Key Features:

Dual-Voltage Flexibility

• Automatically switches between 18 V and 54 V operation when connected to corresponding power tools, offering broad compatibility and eliminating the need for separate battery systems.

• Provides maximum runtime on 18 V XR tools and delivers cordless power comparable to corded tools on 54 V XR FLEXVOLT equipment.

High-Capacity Performance

• 9 Ah nominal capacity at 18 V (equivalent to approx. 3 Ah at 54 V) enables up to 6× the runtime compared to standard 18 V XR packs, significantly increasing operational uptime on high-drain tools like saws, grinders, and rotary hammers.

• Delivers robust energy consistency during sustained workloads, reducing interruptions and charge cycles.

Battery Chemistry & Construction

• Premium lithium-ion XR FLEXVOLT cells ensure high energy density, low self-discharge, and minimal memory effect for reliable performance through extensive duty cycles.

• Built with internal protections against over-heat, overload, and deep discharge, enhancing safety and prolonging service life under demanding conditions.

Integrated LED Fuel Gauge

• Features a 3-LED charge indicator that provides an instant visual check of remaining battery capacity, enabling better workflow planning and minimizing unplanned downtime.

Physical & Compatibility Specs

• Weight: Approx. 1.46 kg — robust yet manageable for large cordless tools.

• Dimensions: Approximately 138 mm (L) × 86–87 mm (W) × ~98 mm (H), optimized for tool balance and ergonomic integration.

• Compatible with all DEWALT 18 V XR and 54 V XR FLEXVOLT tools and chargers, ensuring maximum system versatility.