Search  for anything...
CRAFTSMAN

CRAFTSMAN V20 Lithium Ion Battery, 4.0-Amp Hour (CMCB204)

Based on 1,497 reviews
Condition: New
Checking for the best price...
$48.99
Holiday Deal · 67% off was $149.00

Buy Now, Pay Later

As low as $8.17 / mo
  • – 6-month term
  • – No impact on credit to apply
  • – Instant approval decision
  • – Secure and straightforward checkout

Ready to go? Add this product to your cart and select a plan during checkout.

Payment plans are offered through our trusted finance partners Klarna, Affirm, Afterpay, Zip, Apple Pay, and Google Pay. No-credit-needed leasing options through Acima may also be available at checkout.

Learn more about financing & leasing here.

Selected Option

Free shipping on this product
This item's return window has been extended for the holiday season: FREE refund/replacement until Jan 31, 2027

To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

Availability: In Stock.
Fulfilled by Amazon
Arrives Friday, Nov 13
Order within 6 hours and 53 minutes

Available payment plans shown during checkout

Protect Your Purchase

Easy claims online, fast replacements, no fees

Checking for protection plans...

Recently Viewed

At a glance

Condition
New
Style
Single Battery
Model
CMCB204
Dimensions
6.5 x 5.5 x 2.69 in
Weight
14.4 oz
Battery Capacity
4000 mAh
Item Type Name
Cordless Tool Battery Pack
In the box
(1) CMCB204
Warranty
Visit Craftsman.com
Works with
Craftsman 20 Volt tools

Features 6

  • EXTENDED RUNTIME: CRAFTSMAN battery is made for heavy duty jobsite applications
  • IMPROVED POWER: Premium grade high energy cells
  • LONGER LIFE: Resulting in an extended battery life
  • BATTERY CHARGE FEEDBACK: 3 LED State of charge indicator

Description

This V20 4.0Ah Lithium Ion Battery pack provides up to 3x the capacity versus the standard of a standard 20V MAX lithium battery. It is compatible with the CRAFTSMAN V20 cordless power tool and outdoor tool lineup. The professional grade high performance cells provide improved power and a longer cycle life. Each pack is equipped with a 3-LED state of charge for immediate battery charge feedback. No memory and virtually no self-discharge means this CRAFTSMAN 20V battery is ready when you are.

Specs 19

Number of Batteries 1 Lithium Ion batteries required. (included)
Brand CRAFTSMAN
Battery Cell Composition Lithium Ion
Battery Capacity 4000 mAh
Recommended Uses For Product Power Tool
Model Number CMCB204
Model Name CMCB204
Global Trade Identification Number 88

Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Friday, Nov 13

Yes, absolutely! This item's return window has been extended for the holiday season: FREE refund/replacement until Jan 31, 2027.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • Zip Pay in 4
  • Financing through Apple Pay
  • Financing through Google Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Similar Products

Top Amazon Reviews

Worth it!
Style: 2 Batteries + Charger
Excellent Batteries and a great deal Lowe’s now sells the tools and batteries separately at almost double the cost for a single battery. They last and hold their power well.
Reviewed in the United States on May 17, 2026 by The_CraftyDM
Great value
Style: Single Battery
The power indicator is very helpful. Does a good job
Reviewed in the United States on May 2, 2026 by Zon Customer
Great product. The 4.0Amh battery is super strong and well made.
Style: 2 Batteries + Charger
I always love Craftsman products. I keep buying them for years even when sears own them. These batteries are very good. I can use them in all my craftsman products. The charger is awesome. It charged my battery in 2 hours. The 4.0Amh battery is super strong and well made. I really like how you get 2 batteries. Too bad it doesn't come with a storage bag. They use to come with one but not anymore. Amazon is cheaper than a big box store price. Highly recommend. ... show more
Reviewed in the United States on April 24, 2026 by Christopher R.
Works great! would buy again
Style: 2 Batteries
So far so good holds a good charge. last a good long time in the craftsman leaf blower and all my other craftsman power tools.
Reviewed in the United States on May 20, 2026 by gordon brown
Came with good battery life
Style: Single Battery
Good battery life. Seems to be new and in good condition. Got it at a good price.
Reviewed in the United States on June 12, 2026 by Ryan
OEM Batteries - Received 2024 production date sealed new. Charge cycle lifespan TBD
Style: Single Battery
Wont start with a 5 star because I cant say how long they will last. Received 2 new in clam shell sealed batteries as shown in the product listing. Batteries stamped with a origination date of 2024. Most batteries dont last more than a few years in active use. They still had a 2 bar storage. So shelf sitting little to no power loss awaiting a new owner from the factory. Bought to replace a lost battery for a 2 pack tool set of a driver and drill. I will update in a few months once I have put some charge cycles on them to evaluate performance and charge retention. Easy to use lock in place battery system like many tool makers today. Compatible with my OEM Craftsman 20v cordless tools. ... show more
Reviewed in the United States on April 15, 2026 by A. Harkleroad
Useful and reliable
Style: 2 Batteries + Charger
Qualitative product
Reviewed in the United States on May 29, 2026 by Manpreet
Craftsman 20V 2 pack Kit
Style: 2 Batteries + Charger
Nice quality product, plenty of power.
Reviewed in the United States on May 4, 2026 by Robert G. Zellman
How it works
Checking for best price...