
Craftsman V20 4.0Ah Lithium ION Power Tool Battery - CMCB204-OPE
Best price now
17% under what the other stores charge
Compared across 5 stores. Prices are checked against each store and labelled with when.

17% under what the other stores charge
Compared across 5 stores. Prices are checked against each store and labelled with when.
The Craftsman CMCB204-OPE is a 20V MAX lithium-ion pack rated at 4.0Ah, roughly double to triple the capacity of the compact 1.5Ah batteries that ship with many V20 kits. It fits the whole V20 line, from drills and impact drivers to string trimmers and blowers, and has a 3-LED charge gauge. The best new price is $50.00 at Amazon as of November 4, 2026, with 4 stores listing it new; that is near the low end of what this pack typically sells for.
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Lowest price we've seen: $50.00 on Nov 4 at Amazon. Tracked across 4 stores since Nov 4.
Owners of Craftsman V20 tools generally rate this pack well for runtime and value, treating it as the workhorse battery for trimmers, blowers and saws. Complaints center on weight and on packs that fade after a few years of heavy use.
Craftsman V20* 4.0Ah Lithium Ion Battery (model CMCB204-OPE)
Designed to provide exceptional performance and extended runtime for heavy-duty jobsite and outdoor applications. This powerful battery is part of the CRAFTSMAN® V20* cordless system, making it compatible with a wide range of V20 tools, both power tools and outdoor equipment. Here’s a detailed breakdown of its key features:
Key Features:
Extended Runtime:
This V20 4.0Ah battery offers up to three times the capacity of a standard 20V MAX* lithium battery, providing more power and longer runtime for demanding tasks on the jobsite. Whether you're tackling large projects or need extra time for outdoor maintenance, this battery will help keep your tools running longer.
Improved Power:
The battery features professional-grade high-performance cells that deliver improved power, ensuring your tools operate at peak efficiency. This makes it ideal for both high-demand tasks and more delicate jobs that require consistent power output.
Longer Life:
With a longer cycle life , this battery is built to withstand more charges and last longer, providing extended battery life for continued productivity over time. Its durable construction ensures reliability, even in tough work environments.
State of Charge Indicator:
The battery comes equipped with a 3-LED state of charge indicator , allowing you to easily check the remaining battery life at a glance. This provides immediate feedback on the battery’s charge status, so you can plan accordingly and avoid unexpected interruptions.
No Memory and Low Self-Discharge:
Designed with no memory effect and virtually no self-discharge , the battery is always ready to go when you are. Unlike older battery technologies, this feature means the battery can be charged at any time without losing capacity or lifespan, maximizing your productivity.
Part of the V20 Cordless System:
The V20* 4.0Ah Lithium Ion Battery is fully compatible with CRAFTSMAN® V20 cordless tools, making it versatile and easy to integrate into your existing tool collection. It's an essential part of the V20 Cordless System, powering both outdoor equipment like lawnmowers and leaf blowers, as well as power tools such as drills and saws.
Benefits:
Maximum Productivity: With no memory and virtually no self-discharge , this battery ensures your tools are always ready for use, maximizing uptime and minimizing downtime.
Heavy-Duty Performance: Ideal for heavy-duty applications on the jobsite, it’s designed to handle tough work while maintaining high power output.
Easy Monitoring: The 3-LED state of charge indicator gives you real-time insight into the battery’s charge, making it simple to monitor and avoid running out of power unexpectedly.
Included in the Package:
• (1) 20-volt MAX 4.0Ah Lithium Ion Battery
Whether you're a professional contractor or a DIY enthusiast, the Craftsman V20 4.0Ah Lithium Ion Battery is built to meet the demands of rigorous tasks and provide long-lasting, reliable power.










