STARTER KITCraftsman V20

Craftsman CMCB204-CK V20 battery starter kit

CMCB204-CK is a starter kit: CMCB204 V20* 4.0Ah Li-ion Battery, CMCB104 V20* Li-ion Battery Charger. Single pack: CMCB204; two-pack: CMCB204-2.

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

Specifications

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
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
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.	Yes
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
UPC barcode	885911563758

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CMCB204 V20* 4.0Ah Li-ion BatteryCMCB104 V20* Li-ion Battery Charger

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

Model number CMCB204-CK (also searched without hyphens as CMCB204 CK).

Which tools does the CMCB204-CK fit?: It is a Craftsman V20 system battery. Which batteries fit Craftsman V20 tools?
How many Ah is the CMCB204-CK?: 4.0 Ah per battery, 80 Wh energy, as Craftsman publishes it.
What is in the CMCB204-CK box?: CMCB204 V20* 4.0Ah Li-ion Battery, CMCB104 V20* Li-ion Battery Charger.

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.