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DeWalt FLEXVOLT map

FLEXVOLT packs auto-switch between 20V and 60V. They drop into every 20V MAX tool; standard 20V packs do not run 60V / 120V tools.

Common FLEXVOLT SKUs

SKUCapacity classNotes
DCB606~6.0 Ah @ 20VCommon starter FLEXVOLT
DCB609~9.0 Ah @ 20VLonger 20V / 60V runtime
DCB612~12.0 Ah @ 20VHigh-runtime pack; also 60V / 120V (dual-pack) systems
DCB615~15.0 Ah @ 20VTop capacity class

Compatibility rules

DirectionWorks?
FLEXVOLT → 20V MAX toolYes (auto 20V)
20V MAX pack → 60V toolNo
FLEXVOLT → 60V toolYes
Two FLEXVOLT → 120V toolsYes on designed tools

Sources