DEWALT 20V MAX Lithium Ion Battery, 2 Ah and 4 Ah, 4-Pack, Fuel Gauge LED Charge Indicators (DCB324-4)

What It Is

This is a 4-pack of DEWALT 20V MAX lithium-ion batteries (two 2 Ah and two 4 Ah) with built-in fuel gauge LED charge indicators. It powers any DEWALT 20V MAX tool, including lawn mowers, trimmers, blowers, and edgers.

Fitment & Compatibility

• Brand fit: Only compatible with DEWALT 20V MAX tools and chargers. Not for 54V or 60V FLEXVOLT systems unless used in a 20V mode adapter.
• Deck size/model: For mowers, the 4 Ah battery works best with 20V push mowers (e.g., DCMW220, DCMW225). The 2 Ah is lighter and better for trimmers or blowers. Check your mower’s battery slot dimensions: both batteries fit standard DEWALT 20V ports.
• OEM vs aftermarket: This is genuine DEWALT OEM. Aftermarket batteries may not fit snugly or charge correctly.
• Measurement: Each battery measures roughly 4.5 x 3 x 2.5 inches. Ensure your tool’s battery compartment can accept both sizes (some older mowers have tight slots).

Key Things to Know

• Quality: DEWALT 20V MAX batteries are reliable, with built-in overcharge and temperature protection. The 4 Ah offers more runtime (about 25–30 minutes on a 20V mower); the 2 Ah is about half that.
• Installation: Zero difficulty—snap in, snap out. No tools needed.
• Gotchas: These are not cross-compatible with 18V NiCad or 12V MAX tools. The fuel gauge LEDs only show charge when the battery is on the tool or charger, not when stored. Always store batteries at room temperature to avoid performance loss.
• Charger: No charger included in this pack. You need a DEWALT 20V charger (sold separately or may already own one).

Should You Buy It

Buy this if you own multiple DEWALT 20V MAX tools—especially a mower and handhelds—and want a versatile mix of runtime (4 Ah for mowing) and lightweight convenience (2 Ah for trimming). At $178, it’s a strong value for OEM quality, but skip if you only need one battery or already have a set.