[4.0Ah Compact Runtime Upgrade] Double the runtime of standard 2.0Ah packs while maintaining a lightweight, single-row "Slim" profile. Ideal for users who need extended power without the bulk of traditional high-capacity batteries. [Full 20V MAX System Compatibility] 100% compatible with the entire DeWALT 20V MAX, XR, and Atomic brushless tool lines. Perfectly replaces DCB240, DCB230, and provides a significant power upgrade for DCB203 and DCB201 users. [Advanced 21700 Cell Technology] Utilizes premium high-density 21700 lithium cells for superior thermal management and higher current discharge; prevents tool "stalling" during heavy-duty cuts and increases total battery lifespan. [Reduced Tool Fatigue] Designed for overhead drilling and all-day use, this compact 4.0Ah pack keeps your tools maneuverable in tight spaces while delivering the current needed for high-torque impact drivers and drills. 【BatPower Professional After-Sales】We offer 2-year warranty, 30-day free return & 7×24h technical support for this 2-Pack 20V battery; dedicated to providing reliable power solutions for professional users, buy with confidence.

Lightweight Power for Non-Stop Work: BatPower 4.0Ah Slim-Series 20V Replacement Battery 2-Pack

The BatPower 4.0Ah Slim-Series 2-pack offers high-capacity energy without the weight and bulk of standard "double-stack" batteries. Utilizing advanced high-density cell technology, these packs deliver the runtime of a 4.0Ah battery in a lightweight, single-layer design. With two batteries in one set, you can keep your tools balanced and your productivity high, ensuring you always have a fresh, lightweight pack ready to go.

High-Density Performance & Slim Portability:

• 4.0Ah High-Capacity Output: Each battery delivers 72Wh of fade-free power—providing twice the runtime of standard 2.0Ah batteries while maintaining a compact, thin footprint.
• Ergonomic Slim Profile: The single-layer design keeps your tool perfectly balanced and reduces arm fatigue during overhead drilling, precision fastening, and long work days.
• Universal 20V MAX Compatibility: Precision-engineered to be 100% compatible with the DeWALT 20V MAX system, replacing models DCB240, DCB230, DCB203, and DCB201.

Advanced Smart Safety Protection:

Equipped with an Integrated Smart-Chip BMS (Battery Management System), these batteries protect against over-charging, over-heating, over-voltage, and short-circuiting. The advanced protection circuitry ensures stable power delivery and long-term battery health for both the user and the tool.

Jobsite Ready Features:

• Integrated LED Fuel Gauge: Each battery features a built-in 3-LED power indicator so you can check your remaining runtime at the touch of a button.
• Secure Click-In Fit: Precision-molded for a tight, wobble-free connection in all compatible 20V tools and original chargers (DCB112, DCB115, DCB118).
• Durable Construction: Built with a robust, impact-resistant outer shell and a non-marring overmolded base to protect your work surfaces and the battery from drops.

What's in the Box: 2 x BatPower 4.0Ah Slim 20V Lithium-Ion Replacement Batteries; 1 x User Manual. (Please note: This is a high-quality replacement product, not an original OEM part. Charger is not included.)