If you’ve been looking to extend your tool runtime, the Craftsman 20V 4 Ah Battery 2-Pack (CMCB204-2) is currently on sale for $79 across several retailers, down from the regular $149. This is a solid value if you’re already invested in Craftsman’s 20V platform or thinking about starting.

The 4 Ah capacity provides more juice than standard 2 Ah packs, meaning you can drill, saw, or drive for longer periods without swapping out batteries. That’s especially handy if you’re tackling weekend projects like building a deck, putting up shelves, or fixing up furniture. Each battery slides into any Craftsman 20V tool, making it easy to share power between different devices in your workshop.

One perk of this 2-pack is having a backup ready. While one battery charges, you can keep working with the second—no downtime waiting around for a fresh power source. And if you already own a couple of Craftsman tools, having extra batteries on deck can streamline your workflow. For example, you could keep a battery in your drill and another in your impact driver so you’re prepared for multiple tasks at once.

Since these are genuine Craftsman batteries, they come built to handle typical wear and tear. Craftsman generally focuses on making user-friendly tools and accessories, and these batteries reflect that with reliable performance and easy compatibility. If you’ve ever found yourself in the middle of a project wishing for more run time, upgrading to larger-capacity packs can make all the difference.

Features of the Craftsman 20V 4 Ah Battery 2-Pack (CMCB204-2)

• 4 Ah Capacity: Offers extended use compared to lower Ah models
• Compatible with Craftsman 20V Tools: Swap batteries among drills, saws, and more
• 2-Pack Convenience: Keep a spare charged for uninterrupted work sessions
• Durable Construction: Built to handle regular use in home or workshop settings
• Easy Slide-On Design: Simple to attach and remove from your power tools