Which lasts longer on a charge?

The 4.0Ah pack, roughly twice as long as the 2.0Ah at the same draw. In a high-draw tool like a circular saw, the difference is more noticeable.

Is the two-pack worth the extra money?

Yes if you use your tools often. At $99.00 for 8.0Ah total versus $32.00 for 2.0Ah, you pay more but get about four times the capacity and a spare battery.

Do both fit the same tools and chargers?

Yes. Both are Craftsman V20 packs and work with V20 tools and V20 chargers, including the CMCB104 fast charger.

Which is better for a drill or impact driver?

The 2.0Ah is fine for drilling and driving, and its lighter weight helps balance compact tools. Step up to the 4.0Ah if you drill masonry or drive long screws all day.

Does the 2.0Ah come with a charger?

The listing includes a battery and charger. The 4.0Ah two-pack is batteries only, so you need a V20 charger already.

Craftsman V20 20V MAX Lithium-Ion 2.0Ah Battery Pack vs V20 4.0Ah Lithium Ion Battery (2 Pk)

Buy the 2.0Ah single pack if you want the lowest entry price and light, short jobs. Buy the 4.0Ah two-pack if you run tools longer or want spare batteries on hand. As of November 4, 2026, the single 2.0Ah is $32.00 at eBay, and the 4.0Ah two-pack is $99.00 at Amazon. Per amp-hour, the two-pack is the better value, but it costs about three times as much up front.

Today the Craftsman V20 20V MAX Lithium-Ion 2.0Ah Battery Pack costs $67.00 less at its best price.

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