BATTERYCraftsman V20

Craftsman CMCB204 V20 battery

CMCB204 is a single V20 4.0Ah (80 Wh) pack, no charger. Two-pack: CMCB204-2; with charger: CMCB204-CK (1 battery).

Published manufacturer specifications; sources last checked 2026-10-25.

Specifications

Battery capacity (each) What this means Amp-hours (Ah) is the battery's charge capacity. At the same voltage, a higher Ah pack runs longer between charges but is usually larger and heavier. Smaller packs keep the tool lighter for overhead and light work; larger packs suit saws, grinders and other high-draw tools.	4.0 Ah
Energy What this means Watt-hours (Wh) is the total energy stored, roughly voltage times amp-hours. It is the fairest way to compare packs of different voltage. Watt-hours also matter for shipping and air travel: airlines limit lithium-ion batteries, and packs over 100 Wh generally need airline approval.	80 Wh
Warranty What this means This is the maker's published warranty term. Terms for tools, batteries and chargers often differ, and some depend on registration or exclude certain uses. Read the maker's terms for what is covered, how claims are handled and whether proof of purchase is required.	3 Year Limited Warranty
Batteries in box What this means This lists how many batteries come in the box, if any. Tool-only (bare) listings include no battery or charger, which suits buyers already on that battery platform. Two batteries let you charge one while working with the other.	1
Charger in box What this means This states whether a charger is included and which type. Chargers vary in output, so the same battery can take noticeably different times to charge on different chargers. Tool-only listings usually include no charger.	No
UPC barcode	885911564588

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CMCB204 V20* 20V MAX 4.0Ah Li-ion battery

Part of the Craftsman V20 system. See "Works with" for the maker's own compatibility statement.

Which tools does the CMCB204 fit?: It is a Craftsman V20 system battery. Which batteries fit Craftsman V20 tools?
How many Ah is the CMCB204?: 4.0 Ah per battery, 80 Wh energy, as Craftsman publishes it.
Which chargers charge the CMCB204?: Chargers whose maker statement covers Craftsman V20 batteries: CMCB104. Each statement is linked under Chargers for this battery.
Which kits include the CMCB204?: 4 kits on this site list the CMCB204 by model number in Craftsman's box list: CMCF900M1, CMCF940M1, CMCS300M1, CMCS500M1.
Is the CMCB204 sold in a multi-pack?: Yes: CMCB204-2 (2x CMCB204 V20* 20V MAX 4.0Ah Li-ion Batteries); CMCB204-CK (CMCB204 V20* 4.0Ah Li-ion Battery, CMCB104 V20* Li-ion Battery Charger).
Does the CMCB204 come with a charger?: No. Craftsman lists no charger in the box.
What is the CMCB204 warranty?: 3 Year Limited Warranty, as Craftsman publishes it.

CMCB204-2 multi-pack: 2x CMCB204 V20* 20V MAX 4.0Ah Li-ion Batteries
CMCB204-CK starter kit: CMCB204 V20* 4.0Ah Li-ion Battery, CMCB104 V20* Li-ion Battery Charger

Chargers whose maker statement covers Craftsman V20 batteries, each with the statement's source.

Which batteries fit which tools, in Craftsman's own words: Craftsman V20 battery compatibility.

Kits whose maker box list names the CMCB204 by model number.

Every Craftsman V20 tool takes this system's batteries; capacity (Ah) changes run time, not fit.

Spotted a wrong number? Report a spec error (opens an email with the model filled in). We re-check against the maker's page and correct the page.