Which battery lasts longer on a single charge?

The DCB206. Its 6.0Ah capacity is 20% more than the DCB205's 5.0Ah, so it runs longer between swaps, especially in high-drain tools.

Is the DCB206 worth the extra money?

Only if you run high-drain tools all day. At $149.00 as of November 2, 2026, it costs more than twice the DCB205's $61.92 at Walmart as of November 3, 2026, for 20% more capacity.

Which is better for a drill or impact driver?

The DCB205. It is lighter at 1.4 lb, charges in 30 minutes, and drills and drivers do not drain a 5.0Ah pack quickly.

Which is better for a blower or grinder?

The DCB206. High-drain tools pull current fast, and the extra amp-hour plus XR design keeps them running longer. One DCB205 owner reported 15-20 minutes in a blower.

Do both fit the same tools and chargers?

Yes. Both are DeWalt 20V MAX XR packs and work with all 20V MAX tools and chargers. The DCB206 charges fastest on the DCB118 fast charger.

Which one is lighter to use overhead?

The DCB205 at 1.4 lb. The DCB206 weighs 2.25 lb, which is noticeable when you hold a tool above your head.

DeWalt 20V MAX Lithium-Ion 5.0Ah Battery Pack (DCB205) vs DeWalt 20V MAX Lithium-Ion 6.0Ah Battery Pack (DCB206)

Buy the DCB205 if you want the cheapest way to keep 20V MAX tools running. It is $61.92 new at Walmart as of November 3, 2026, and it weighs 1.4 lb. Buy the DCB206 if you run high-drain tools like blowers, grinders or impact wrenches all day and can pay for the extra amp-hour. The 6.0Ah pack is heavier at 2.25 lb and its lowest recent price was $149.00 as of November 2, 2026.

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