
Craftsman 4.0-Amp Hour V20 Lithium Ion Battery
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Our take on the Craftsman 4.0-Amp Hour V20 Lithium Ion Battery
This is a spare or replacement 20V max lithium-ion pack for Craftsman's V20 cordless line. At 4.0 amp-hours it sits in the middle of the V20 range: twice the capacity of the compact 2.0Ah pack, half the 9.0Ah flagship. It fits the V20 drills, impact drivers, saws and trimmers that share the slide-on mount, and the built-in charge indicator shows remaining power without a tool. Owners like the runtime for mid-size jobs; the common complaint is weight in compact tools and slower charging on the basic charger.
- Double the runtime of the 2.0Ah compact pack
- Fits every tool in the Craftsman V20 line
- On-board charge indicator shows remaining power
- Lithium-ion holds charge in storage better than older chemistries
- Middle capacity keeps weight below the high-capacity packs
Craftsman 4.0-Amp Hour V20 Lithium Ion Battery prices at every store
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What reviewers say
Owners treat it as a dependable everyday pack that extends V20 runtime without the bulk of the largest batteries. Complaints center on charge time on the standard charger and the added weight in small tools.
- RuntimePraisedOwners say it runs mid-size tools far longer than the compact 2.0Ah pack.
- WeightMixedSome find it noticeably heavier in compact tools, while others accept it for the extra runtime.
- ChargingCriticisedRecharge time on the standard V20 charger is called slow by several owners.
Questions and answers
- Which Craftsman tools does this battery fit?
- It fits tools in the Craftsman V20 cordless line, including drills, impact drivers, saws and outdoor tools. It does not fit the older 19.2V tools or the V60 line.
- How does it compare with the 2.0Ah V20 pack?
- It stores twice the charge, so tools run about twice as long, but it is larger and heavier. The 2.0Ah pack suits light work and compact tools.
- Is it worth buying over the 9.0Ah pack?
- For most drilling, driving and cutting it is the better balance of runtime and weight. The 9.0Ah pack is for long, heavy jobs where weight matters less.
- Does it have a charge indicator?
- Yes. A built-in gauge on the pack shows how much charge is left.
- Can I leave it on the charger?
- Craftsman's V20 chargers manage the charge cycle, but for longest life store the pack off the charger at room temperature.
- Is it a genuine Craftsman battery?
- It is sold as a Craftsman V20 lithium-ion pack. Check that the pack carries the V20 label, since third-party packs may not fit or may void tool coverage.














