DEWALT 20V MAX XR DCB21042 4Ah Lithium Ion Battery Pack, 2-Pack

• Amazon now offers the DEWALT DCB21042 20V 4Ah Lithium-Ion Battery Pack, 2-pack, now $129.46 (list price $269.00).
• Prime members get free two-day shipping, and regular members get free shipping on orders over $35 within the contiguous U.S.
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Editor's Pick: If you rotate through a few DEWALT 20V tools, having two batteries to swap between means you'll barely ever wait for a charge. The 4Ah capacity holds up longer than the older cylindrical cells, and the rubberized base gives you peace of mind if it gets knocked against a workbench or dropped on the floor. The side LED lets you check the remaining charge at a glance, so you won't get caught mid-task with a dead battery. It fits all 20V MAX tools, so it's compatible whether you're mixing old and new machines at home.