Is the two-pack worth it over buying single batteries?

If you already own V20 tools, the two-pack at $99 at Amazon as of November 4, 2026 works out cheaper per battery than most single 4.0Ah packs. It also keeps one pack charging while the other runs.

Will these fit my Craftsman V20 drill and charger?

Yes. The CMCB204 packs use the standard Craftsman V20 slide mount and work with all V20 tools and V20 chargers.

Do the batteries come with a charger?

No. The box contains two 4.0Ah batteries only. You need a V20 charger, which most V20 tool kits already include.

How much runtime do I get from 4.0Ah?

Roughly double the runtime of a 2.0Ah pack in the same tool. Actual time depends on the tool and load, so a drill may run for hours while a circular saw drains faster.

When is the best time to buy?

Battery two-packs usually drop around Black Friday, Father's Day and spring tool sales. The current best new price is $99 at Amazon as of November 4, 2026, across three stores.

Where is the V20 4.0Ah Lithium Ion Battery (2 Pk) cheapest?

At Amazon, for $99.00, 28% under what the other stores charge, as of our latest check.

Where can I buy the V20 4.0Ah Lithium Ion Battery (2 Pk)?

3 stores we checked sell it, including TaskHolt, Get Your Thing, Amazon.

Craftsman

V20 4.0Ah Lithium Ion Battery (2 Pk)

Best price now

$99.00at AmazonObserved at 12:16 PM

28% under what the other stores charge

Compared across 3 stores. Prices are checked against each store and labelled with when.

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Our take on the V20 4.0Ah Lithium Ion Battery (2 Pk)

This is a two-pack of Craftsman V20 4.0Ah lithium-ion batteries (CMCB204-2), the high-capacity packs that fit every tool in the V20 cordless line. Each pack has a 3-LED charge gauge and uses cells rated for no memory effect and low self-discharge. The best new price is $99 at Amazon as of November 4, 2026, with three stores selling it new.