Will the DeWalt DCB609 FLEXVOLT 20V/60V MAX 9Ah battery work with the DeWalt DCS578B FLEXVOLT 60V MAX 7-1/4 in. brushless circular saw (tool only)?
Yes. Both use DeWalt FLEXVOLT 20V/60V MAX battery platform.
Both records are reviewed against the manufacturers' sources; sources last checked 2026-10-14. Informational only: confirm with the manufacturer before buying.
Why
- ✓ Both use DeWalt FLEXVOLT 20V/60V MAX battery platform.
Good to know
- DeWalt lists FLEXVOLT batteries for its 60V MAX tools (e.g. the DCS578B); 20V MAX batteries aren't listed for them.
- 120V MAX tools take two FLEXVOLT batteries.
- FLEXVOLT batteries charge on DeWalt 20V MAX chargers.
- Ah ratings (e.g., 9Ah) apply in 20V mode; in 60V mode usable Ah is one-third (watt-hours are the same, e.g., DCB609 = 180 Wh).
- DeWalt states maximum initial voltage is 20/60/120V and nominal voltage is 18/54/108V.
Sources
- DeWalt DCS578B FLEXVOLT 60V MAX 7-1/4 in. brushless circular saw (tool only): specs from DeWalt product page, checked against the source 2026-10-07.
- DeWalt DCB609 FLEXVOLT 20V/60V MAX 9Ah battery: specs from DeWalt product page, checked against the source 2026-10-07.
- DeWalt FLEXVOLT 20V/60V MAX battery platform: DeWalt FLEXVOLT batteries automatically switch between 20V and 60V, so they run both 20V MAX tools and 60V MAX (and 120V MAX) tools. (DeWalt FLEXVOLT battery system page).
Check your exact setup
Other parts in the cart, current configuration (installed memory, fan brackets) and adapters can change the answer.
Check a whole cartAlso checked with the DeWalt DCS578B FLEXVOLT 60V MAX 7-1/4 in. brushless circular saw (tool only)
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