Which lasts longer per charge, the 4Ah or the 5Ah?

The DCB205 5Ah runs about 25% longer per charge than the DCB204 4Ah. On light tools like drills and impact drivers you may not notice much difference; on grinders and saws the 5Ah helps.

Is the 5Ah worth the extra money?

Only if you run high-draw tools or work far from a charger. The 4Ah is $57.00 at Amazon as of November 3, 2026, and carries the higher shopper rating, so it is the better value for most home users.

Do both fit the same DeWalt tools?

Yes. Both are DeWalt 20V MAX XR packs and fit the same tools and 20V MAX chargers. You can mix 4Ah and 5Ah packs in the same kit.

Which is lighter to hold overhead?

They are effectively the same: 1.42 lb for the 4Ah and 1.4 lb for the 5Ah. Weight is not a reason to pick one over the other.

Does either pack come with a charger?

The DCB204 is sold as a battery only. The DCB205 listing includes a charger, so check what each store bundles before you buy.

Why is the 5Ah rated lower by shoppers?

The 5Ah has 3.4 out of 5 from 77 ratings versus 4.2 out of 5 from 51 for the 4Ah. Ratings reflect buyer experience, not measured runtime, so weigh them alongside the capacity difference.

DeWALT Max XR Lithium-Ion 20V 4Ah Battery DCB204 vs DeWalt 20V MAX XR Premium Lithium-Ion 5.0Ah Battery

Buy the DCB204 4Ah if you want the lower price and a lighter pack; it is $57.00 at Amazon as of November 3, 2026. Buy the DCB205 5Ah if you need the extra amp-hour of runtime for grinding, sanding or long drilling sessions. The 5Ah pack costs more and carries a lower shopper rating (3.4 vs 4.2), so the 4Ah is the better value unless runtime is the deciding factor.

Ask our shopping agent