No. DeWalt 20V MAX/FlexVolt and Black+Decker 20V MAX POWERCONNECT batteries are not interchangeable, and this is the same story already told on this site for DeWalt and Craftsman: shared corporate ownership, zero shared hardware.
Stanley Black & Decker owns both DeWalt and Black+Decker, the same parent company that owns Craftsman. That shared roof is exactly why people assume the batteries must cross over — surely one company wouldn’t build two incompatible battery systems for its own brands? It did, though, and neither brand’s own materials suggest otherwise. DeWalt’s FLEXVOLT Battery System page states plainly that “FLEXVOLT batteries are compatible with DEWALT 20V MAX power tools.” Black+Decker’s 20V MAX POWERCONNECT collection page mirrors that self-contained scope: “The 20V MAX POWERCONNECT™ products have a battery compatible with other 20V MAX tools and products.” Read that sentence carefully — “other 20V MAX tools and products” means other Black+Decker products in the POWERCONNECT lineup, not DeWalt’s. Neither page so much as gestures at the other brand.
Black+Decker’s own product pages back this up with real specs, not just a category name. The BCD382DS1 20V MAX POWERCONNECT Cordless Drill Driver Kit is rated at “398 in-lbs (45nm)” of maximum torque, with “10 clutch positions for screwdriving applications and an additional position for drilling,” two speed settings, and a “keyless 1/2 in single-sleeve chuck.” It ships with a “20V MAX* 2.0 Ah Battery with State of Charge” and a charger — a complete, self-supporting kit, built around Black+Decker’s own battery, not a slot for anyone else’s.
The “20V MAX” branding both companies use is where a lot of the confusion actually starts, and it’s worth being precise about it. DeWalt’s DCA1820 adapter page clarifies that its own 20V MAX batteries have a “maximum initial battery voltage (measured without a workload)” of 20 volts, with a “nominal voltage” of 18 — so “20V MAX” is really an 18V-class battery wearing a peak-voltage label. Black+Decker’s own spec sheet for its 20V MAX battery just lists “Voltage: 20 V,” without breaking out a separate nominal figure the way DeWalt does. That’s a real difference in how each brand documents its own hardware, and it’s one more reason not to treat “20V MAX” as some kind of shared industry standard — it’s marketing language each brand applies to its own, separately engineered battery.
Practical takeaway
Common ownership does not mean shared battery hardware. Treat DeWalt and Black+Decker exactly like you’d treat DeWalt and Craftsman on this site: two completely separate systems under the same parent company, each requiring its own batteries and chargers. If you see “20V MAX” printed on both a Black+Decker battery and a DeWalt battery, that’s Stanley Black & Decker letting two sibling brands use similar marketing language, not an engineering promise that the packs are interchangeable. Match the battery to the tool’s own brand, every time, regardless of what parent company owns the logo on the box.
How this was checked
Facts on this page are drawn from DeWalt’s own FLEXVOLT Battery System and DCA1820 Adapter pages, and Black+Decker’s own 20V MAX POWERCONNECT collection and BCD382DS1 drill driver kit pages.
Sources checked: 2026-08-17. A new review date will only be set after the linked pages are re-checked.