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

Both listings are the same CRAFTSMAN V20 4.0Ah battery; the only real difference is pack size. The single battery is $50.00 at Amazon as of November 4, 2026, and the two-pack is $99.00 at Amazon as of the same date, so the pair costs $1 less per battery. Buy the two-pack if you run two tools or want a spare on the charger; buy the single if you need just one.

Today the Craftsman V20 20V MAX Lithium-Ion 4.0Ah Battery Pack costs $49.00 less at its best price.

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Craftsman
Craftsman V20 20V MAX Lithium-Ion 4.0Ah Battery Pack

Craftsman V20 20V MAX Lithium-Ion 4.0Ah Battery Pack

4.7· 1,742 ratings
$50.00at AmazonObserved at 12:15 PM
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Choose the single 4.0Ah battery if you need one pack to replace a dead battery or add runtime to a single tool.

Pros
  • Lowest entry cost at $50.00
  • Same 4.0Ah cells and 3-LED gauge as the two-pack
  • Listed at more stores, so easier to price-match
Cons
  • One battery means one tool down while charging
  • About $0.50 more per battery than the pair
Craftsman
V20 4.0Ah Lithium Ion Battery (2 Pk)

V20 4.0Ah Lithium Ion Battery (2 Pk)

$99.00at AmazonObserved at 12:16 PM
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Choose the 4.0Ah two-pack if you run two V20 tools or want a charged spare, since it works out to $49.50 per battery.

Pros
  • Two batteries for $99.00, or $49.50 each
  • Keeps a second tool running while one pack charges
  • Same 4.0Ah capacity and 3-LED gauge per pack
Cons
  • Higher upfront spend of $99.00
  • Fewer stores list it, so less price competition

What separates them

Craftsman V20 20V MAX Lithium-Ion 4.0Ah Battery PackV20 4.0Ah Lithium Ion Battery (2 Pk)
Pack count1 battery (CMCB204)2 batteries (CMCB204-2)
Price per battery$50.00 at Amazon as of November 4, 2026$49.50 at Amazon as of November 4, 2026
Total price$50.00 at Amazon as of November 4, 2026$99.00 at Amazon as of November 4, 2026
Capacity and voltage4.0Ah, 20V max4.0Ah, 20V max
Charge indicator3-LED state of charge3-LED state of charge
Stores listing it new5 stores3 stores
Best forOne tool, one spare slotTwo tools or a charged backup

Price history

  • Craftsman V20 20V MAX Lithium-Ion 4.0Ah Battery Pack: lowest $50.00 on Nov 4 at Amazon.
  • V20 4.0Ah Lithium Ion Battery (2 Pk): lowest $43.19 on Nov 4 at Amazon.

Prices at every store

Craftsman V20 20V MAX Lithium-Ion 4.0Ah Battery Pack

  • Buy & Sell OutletNew

    In stockReturn policy

    $50.00Observed at 12:15 PM
    Visit store
  • AmazonNew

    Availability unknown

    As an Amazon Associate, Deal.ai earns from qualifying purchases.

    $50.00Free shippingObserved at 12:15 PM
    Visit store
  • Lowe'sNew

    Availability unknown

    $59.00Free shippingObserved at 12:34 PM
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  • ZoroNew

    Availability unknown

    $65.55Observed at 12:34 PM
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Also available at

  • eBayCheck price at eBay
  • Life and HomeCheck price at Life and Home
All 5 stores and price history →

V20 4.0Ah Lithium Ion Battery (2 Pk)

  • TaskHoltNew

    In stockReturn policy

    $137.25Observed at 12:16 PM
    Visit store
  • Get Your ThingNew

    In stockReturn policy

    $166.97Observed at 12:16 PM
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  • AmazonNew

    Availability unknown

    As an Amazon Associate, Deal.ai earns from qualifying purchases.

    $99.00Free shippingObserved at 12:16 PM
    Visit store
All 3 stores and price history →

Specs compared

SpecCraftsman V20 20V MAX Lithium-Ion 4.0Ah Battery PackV20 4.0Ah Lithium Ion Battery (2 Pk)
Battery capacity4.0Ah—
Voltage20—
Battery quantity2—
Power sourceCordless—
Product height2 4/5—
Product length4 4/5—
Charge indicator3 LED State of charge indicator—
Warranty3 Year Limited Warranty—
Sub-BrandV20—
Charges Battery TypeLithium Ion (Li-ion)—
Package Contents(1) CMCB204 V20 4.0Ah Lithium Ion Battery—
TypeBattery—
Show all 22 specsShow fewer specs
SpecCraftsman V20 20V MAX Lithium-Ion 4.0Ah Battery PackV20 4.0Ah Lithium Ion Battery (2 Pk)
Battery Package Count1—
Battery TypeLithium-ion—
Battery Voltage20-volt max—
Battery 1 Amp-Hours4—
Battery 2 Amp-Hours0—
Battery PlatformCRAFTSMAN V20—
Charge Time (Hours)1—
Cordlesstrue—
Brand/Model CompatibilityCRAFTSMAN V20—

What reviewers say

Craftsman V20 20V MAX Lithium-Ion 4.0Ah Battery Pack

With 4.7 out of 5 from 1,742 ratings, owners mostly report solid runtime and a good fit across V20 tools. Complaints tend to center on price per pack and on batteries that fade after heavy use.

Pros
  • Noticeably longer runtime than the small stock battery
  • Charge indicator is handy
  • Fits V20 tools without wobble
  • Holds charge between uses
Cons
  • Costs more than generic packs
  • Some units lose capacity after a year or two of hard use
  • No charger in the box

V20 4.0Ah Lithium Ion Battery (2 Pk)

Owners of Craftsman V20 tools generally rate the 4.0Ah packs well for runtime and value in a two-pack. Complaints tend to focus on weight and on packs aging after years of hard use.

Pros
  • Noticeably longer runtime than the smaller packs
  • Good value buying two at once
  • Charge gauge is handy on the job
Cons
  • Adds weight to drills and saws
  • Some packs lose capacity over time
  • No charger in the box

Questions and answers

Is the two-pack just two of the same battery?
Yes. The CMCB204-2 is two CMCB204 4.0Ah packs, with the same 20V max platform and 3-LED gauge.
Which is cheaper per battery?
The two-pack. At $99.00 at Amazon as of November 4, 2026 it is $49.50 per battery, against $50.00 for the single.
How long does a 4.0Ah pack run?
CRAFTSMAN rates it at up to 3x the capacity of its 1.3Ah pack, so expect roughly triple the runtime of the battery that ships with bare tools. Actual runtime depends on the tool and load.
Will these fit my V20 tools?
Yes, if your tools are on the CRAFTSMAN V20 platform. They are not compatible with other brands' 20V tools.
Is one worth the extra over the other?
Only if you need two packs. If one battery covers your use, the $50.00 single saves $49 upfront.

More comparisons

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

Buying guides that pick them

  • Best Craftsman V20 replacement batteries
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