# DeWalt 20V MAX vs Milwaukee M18

> DeWalt 20V MAX and Milwaukee M18 batteries don't swap: we have no source saying either pack runs the other's tools. DeWalt 20V MAX: 11 battery packs (1.7–10 Ah) and 19 garden tools listed. Milwaukee M18: 13 battery packs (2–12 Ah) and 29 garden tools listed. Widest mower: 21.5 in against 21 in. Strongest blower: 550 CFM against 650 CFM. Widest string trimmer: 15 in against 17 in.

| | [DeWalt 20V MAX](https://powertoolgrid.com/lines/dewalt-20v-max/) | [Milwaukee M18](https://powertoolgrid.com/lines/milwaukee-m18/) |
|---|---|---|
| Voltage on the label | 20 V | 18 V |
| Batteries | 11 packs, 1.7–10 Ah | 13 packs, 2–12 Ah |
| Garden tools listed | 19: 3 lawn mowers, 3 string trimmers, 2 leaf blowers, 5 hedge trimmers, 2 chainsaws, 1 pole saw, 3 other yard tools | 29: 1 mower, 6 string trimmers, 6 leaf blowers, 7 hedge trimmers, 4 chainsaws, 2 pole saws, 1 power head, 2 other yard tools |
| Widest mower | 21.5 in (2X20V MAX 21-1/2 in Brushless FWD Self-Propelled Mower) | 21 in (M18 FUEL 21 in Self-Propelled Dual Battery Mower) |
| Strongest blower | 550 CFM (XR Brushless Blower) | 650 CFM (M18 FUEL Dual Battery Backpack Blower) |
| Widest string trimmer | 15 in (Brushless Foldable String Trimmer) | 17 in (M18 FUEL 17 in Dual Battery String Trimmer) |
| Self-propelled mowers | 2 of 3 | 1 of 1 |
| Longest tool warranty | 3 years | 3 years |
| Where it's sold | Several stores | Several stores |

Counts are what the catalogue lists so far, not each brand's whole range.

## Questions

**Do DeWalt 20V MAX batteries work with Milwaukee M18 tools?**
No. We have no source saying a DeWalt 20V MAX battery runs Milwaukee M18 tools, or the other way round, so owning both means two sets of packs and chargers.

**Which has more garden tools, DeWalt 20V MAX or Milwaukee M18?**
In this catalogue so far: 19 for DeWalt 20V MAX and 29 for Milwaukee M18. Both brands may make more than are listed yet.

**Which has the bigger battery, DeWalt 20V MAX or Milwaukee M18?**
By the brands' amp-hour figures, the largest DeWalt 20V MAX pack listed is 10 Ah and the largest Milwaukee M18 pack is 12 Ah. Amp-hours only compare fairly at the same voltage (20 V against 18 V); watt-hours, where the brand states them, are on each battery's page.

**Which makes the wider mower, DeWalt 20V MAX or Milwaukee M18?**
By the brands' own figures: 21.5 in for DeWalt 20V MAX ([2X20V MAX 21-1/2 in Brushless FWD Self-Propelled Mower](https://powertoolgrid.com/products/dewalt-20v-max-dcmwsp244/)) and 21 in for Milwaukee M18 ([M18 FUEL 21 in Self-Propelled Dual Battery Mower](https://powertoolgrid.com/products/milwaukee-m18-2823-20/)).

**Which has the stronger leaf blower, DeWalt 20V MAX or Milwaukee M18?**
By the brands' own figures: 550 CFM for DeWalt 20V MAX ([XR Brushless Blower](https://powertoolgrid.com/products/dewalt-20v-max-dcbl724b/)) and 650 CFM for Milwaukee M18 ([M18 FUEL Dual Battery Backpack Blower](https://powertoolgrid.com/products/milwaukee-m18-3009-20/)).

**Which has the wider string trimmer, DeWalt 20V MAX or Milwaukee M18?**
By the brands' own figures: 15 in for DeWalt 20V MAX ([Brushless Foldable String Trimmer](https://powertoolgrid.com/products/dewalt-20v-max-dcst926b/)) and 17 in for Milwaukee M18 ([M18 FUEL 17 in Dual Battery String Trimmer](https://powertoolgrid.com/products/milwaukee-m18-3006-20/)).

**Which has the longer warranty, DeWalt 20V MAX or Milwaukee M18?**
The longest tool warranty we have read is 3 years for DeWalt 20V MAX and 3 years for Milwaukee M18. Batteries often carry a shorter one; check each product's page.

Full product lists with specs and sources: [DeWalt 20V MAX](https://powertoolgrid.com/lines/dewalt-20v-max/index.md), [Milwaukee M18](https://powertoolgrid.com/lines/milwaukee-m18/index.md). Every platform side by side: https://powertoolgrid.com/platforms/. Page: https://powertoolgrid.com/vs/dewalt-20v-max-vs-milwaukee-m18/

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PowerToolGrid lists cordless yard-tool battery platforms from every brand side by side, with a source for every spec. [How we compare](https://powertoolgrid.com/how-we-compare/). Data as of 2026-10-29.