CMCB124 Dual Port V20 Battery Fast Charger Replacement - Dual USB

Our review of the CMCB124 Dual Port V20 Battery Fast Charger finds it best suited for tradespeople and DIYers who need a reliable replacement charger for Craftsman 20V Max V20 batteries and want the convenience of charging two batteries plus USB devices at a jobsite. The single biggest reason to buy is straightforward: it charges two compact 20V Max lithium batteries quickly while also providing dual USB ports for phones and accessories, which reduces downtime on the worksite and at home.

Key Features

• Dual battery charging: Can charge two CRAFTSMAN 20V Max compact lithium batteries at the same time to keep two tools ready for continuous work.
• Fast charge capability: Offers a DC output up to 2A max so batteries can be replenished in roughly 60-100 minutes depending on battery state, helping speed project completion.
• Wide voltage compatibility: Universal 110V to 240V input makes the charger usable at home, on the jobsite, or in locations with different mains voltages.
• Dual USB ports: Built-in USB ports let you charge a mobile phone or USB accessories while batteries charge, removing the need for a separate charger.
• LED diagnostics: Simple LED indicators communicate charge status and warn if a battery is too hot or too cold, aiding safe charging and troubleshooting.

Who It's For

This charger is aimed at users who already own Craftsman 20V Max V20 batteries such as CMCB202, CMCB204, CMCB206 or the listed charger models and need a like-for-like replacement that offers added USB convenience. Contractors, landscapers, and homeowners who run multiple cordless tools will appreciate the ability to charge two compact batteries at once and top up phones from the same unit.

It is not for owners of the 20V Max Bolt-On or DieHard series batteries, and those who need manufacturer-branded warranty support should look to official replacements. Buyers seeking smartphone-style fast charging protocols on the USB ports should check device compatibility, as the unit provides general USB charging rather than advanced fast-charge profiles.

Pros & Cons

Pros

• Charges two compatible 20V Max lithium batteries at once, improving on single-slot chargers.
• Dual USB ports add practical value for charging phones or accessories on site.
• Universal 110V to 240V input makes it flexible for varied work locations.
• LED diagnostics help identify charging state and temperature issues for safer operation.

Cons

• Some users report mixed long-term reliability, with a few units failing after use, so expect variable longevity.
• Not compatible with 20V Max Bolt-On and DieHard series batteries, limiting cross-compatibility.

Specifications

Replacement for	CMCB124, CMCB100, CMCB101, CMCB102, CMCB104
Compatible batteries	CMCB204, CMCB202, CMCB206, CMCB209 (20V Max)
USB ports	Dual USB ports for mobile charging
Input voltage	Universal 110V to 240V
DC output	2A MAX (fast charging)
Charge time	Approximately 60-100 minutes for compact batteries
Indicators	LED diagnostics for charged, charging, and temperature warnings

Our Verdict

The CMCB124 Dual Port V20 replacement charger is a practical, cost-effective option for anyone who needs to keep multiple Craftsman 20V Max batteries ready and wants the extra convenience of USB charging. It delivers solid charging speed and useful diagnostics, making it a good value purchase for jobsite use, though buyers should be aware of some reports of inconsistent long-term reliability.

Frequently Asked Questions

Is this charger compatible with all Craftsman 20V Max batteries?
It is compatible with the listed 20V Max lithium compact batteries such as CMCB202, CMCB204, CMCB206 and CMCB209 but not compatible with 20V Max Bolt-On or DieHard series batteries.

Can it charge two batteries at once and also charge a phone?
Yes, it can charge two 20V Max compact batteries simultaneously and provides dual USB ports to charge phones or other USB devices at the same time.

How fast does it charge batteries?
The unit provides up to 2A DC output and typically replenishes compact 20V Max batteries in about 60-100 minutes depending on battery condition and state of charge.