Are the DCB206 and DCB206YY the same battery?

Both are DeWalt 20V MAX 6.0Ah lithium-ion packs with a 60-minute charge time and a charge indicator. The DCB206 carries the XR label and a stated 3-year limited warranty; the DCB206YY is sold as a single pack with no warranty terms listed.

Which lasts longer per charge?

They should run about the same. Both are 6.0Ah, roughly twice the capacity of a 2.0Ah compact pack, so runtime in a given tool depends on the tool, not the model number.

Which is better for a grinder or impact wrench?

Either works. DeWalt rates both for 20V MAX high-drain tools, and 6.0Ah is the capacity that keeps a grinder or high-torque impact wrench running through heavy cuts.

Is the 2-pack worth the extra?

At $149.00 for two packs on November 2, the DCB206 2-pack works out to about $74.50 per pack, which is strong value if you run two tools or want a spare charging. At $189.00 on November 3, the case is weaker.

Do they fit all DeWalt 20V MAX tools and chargers?

Yes. Both are part of the 20V MAX system and work with 20V MAX tools and chargers, including the DCB118 fast charger that fills them in about an hour.

How much does each weigh?

The DCB206 is listed at 2.25 lbs per pack; the DCB206YY is listed at about 2 lbs. That small gap matters little on a drill but can be felt on a tool held overhead.

DeWalt 20V MAX Lithium-Ion 6.0Ah Battery Pack (DCB206) vs DeWalt DCB206YY 20V MAX 6Ah Battery

Both are the same DeWalt 20V MAX 6.0Ah lithium-ion pack, so buy whichever is cheaper right now. The DCB206 is the XR-labeled retail pack with a 3-LED fuel gauge and a 3-year limited warranty; the DCB206YY is the same cell capacity sold as a single pack, rated 4.6/5 from 9,103 ratings. The DCB206 has ranged from $149.00 (November 2) to $189.00 (November 3) for a 2-pack at Authorized Tool Outlet; the DCB206YY price was not given.

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