No. DeWalt 20V MAX/FlexVolt and Craftsman V20 batteries are not interchangeable, and the simplest proof is that neither brand says otherwise.
It is tempting to assume the packs must swap. Both brands sit under the same roof—Stanley Black & Decker owns DeWalt and Craftsman—so plenty of shoppers reasonably guess shared ownership means shared hardware. It does not. If you look at what each company actually claims about its own platform, the other brand never appears.
DeWalt’s FLEXVOLT Battery System page is explicit: “FLEXVOLT batteries are compatible with DEWALT 20V MAX power tools.” That is it. The page talks only to DeWalt owners. There is no footnote, no asterisk, no mention of Craftsman V20, and no cross-brand slide-in compatibility statement. The same pattern shows on DeWalt’s DCA1820 Adapter page, which notes that “Maximum initial battery voltage (measured without a workload) is 20 volts. Nominal voltage is 18.” That is useful context for understanding that DeWalt’s 20V MAX is, in nominal terms, an 18V-class platform, but it is not a hint that the packs are electrically interchangeable with anything else. Matching nominal voltage alone does not make two battery systems compatible.
Craftsman’s own language mirrors DeWalt’s self-contained approach. The Craftsman V20 System page says V20 batteries are “compatible with all the CRAFTSMAN V20 cordless power tool and outdoor tool lineup,” with “over 100 different products” in the system. Again, every word points inward to Craftsman. A concrete example is the CMCD700C1 V20 1/2″ Drill/Driver Kit, which ships with a “(1) V20 20V MAX* 1.3Ah Li-ion Battery” and lists a “1/2-in keyless chuck,” “2-speed gearbox with speeds of 0-350/0-1,500,” and “280 unit watts out.” It is a snapshot of what “V20” means today: a standalone Craftsman ecosystem, not a shared battery standard.
The naming does not help. There was a brief, separate “Craftsman 20V” Sears line in 2018 that ToolGuyd reported on, quoting Jeff Doehne, then General Manager of the Craftsman brand at Stanley Black & Decker, as saying that older line was explicitly not compatible with the current Craftsman V20 line. That is only a warning about confusion inside the Craftsman family itself; it is not evidence about DeWalt either way. Still, it underscores a useful habit: do not read a brand name on a battery pack and assume compatibility.
If neither company’s official platform pages acknowledge the other brand, that absence is the answer. Compatibility claims are exactly the kind of thing manufacturers want to advertise, because cross-compatibility sells batteries. DeWalt and Craftsman both stay silent on it, which means the systems are separate.
Practical takeaway
Common ownership does not mean shared battery hardware. Treat DeWalt and Craftsman as two completely separate systems requiring separate batteries and chargers, the same as any unrelated brand pair. If you happen to have an old “Craftsman 20V” pack with DieHard branding from the 2018-era Sears line, that is a third compatibility question entirely, and it does not work with current Craftsman V20 either. In short: read the platform name on the tool, match the battery to that platform, and do not let the parent-company label on the box trick you.
How this was checked
Facts on this page are drawn from DeWalt’s own FLEXVOLT Battery System and DCA1820 Adapter pages, Craftsman’s own V20 System and CMCD700C1 V20 1/2″ Drill/Driver Kit pages, plus a named-executive quote reported by ToolGuyd.
Sources checked: 2026-08-11. A new review date will only be set after the linked pages are re-checked.