Will the DCB609 work in my 20V drill?

Yes. It fits all DEWALT 20V MAX tools and runs at 20V there, with much longer runtime than a 4Ah pack. It is heavier, so the drill will feel nose-heavy.

Can the 4Ah POWERPACK run 60V tools?

No. It is a 20V MAX pack only and will not power 60V MAX or 120V MAX tools.

Which lasts longer per charge?

The DCB609. At 9.0Ah and 180 Wh it holds more than twice the energy of the 4Ah pack, and DEWALT claims up to 6x the runtime of a standard 20V pack in compatible tools.

Is the FLEXVOLT worth the extra money?

Only if you use 60V tools or need long runtime in 20V saws and grinders. For drills and drivers, the 4Ah pack at $63.90 does the job for far less.

Do both work in cold weather?

The DCB609 is rated to operate down to 0°F. DEWALT does not list a cold-weather rating for the 4Ah POWERPACK.

How long does each take to charge?

The DCB609 recharges in about 1 hour on a compatible charger. The 4Ah pack charges faster, roughly 30 to 60 minutes depending on the charger.

DEWALT FLEXVOLT 20V/60V MAX 9.0Ah Lithium-Ion Battery Pack with Fuel Gauge (DCB609) vs DEWALT 20V MAX Battery XR POWERPACK 4Ah Lithium Ion

Buy the DCB609 if you run 60V MAX tools like the FlexVolt circular saw, grinder or rotary hammer, or want maximum runtime in 20V tools. Buy the 4Ah XR POWERPACK if you only use 20V MAX tools and want a lighter, cheaper pack. The DCB609 costs far more than the 4Ah pack, which was listed at $63.90 at its lowest daily price on October 29, 2026.

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