PowerToolGrid

Milwaukee M18 vs Ryobi 40V

Milwaukee M18 and Ryobi 40V batteries don't swap: we have no source saying either pack runs the other's tools. Milwaukee M18: 13 battery packs (2–12 Ah) and 29 garden tools listed. Ryobi 40V: 9 battery packs (2–12 Ah) and 49 garden tools listed. Widest mower: 21 in against 21 in. Strongest blower: 650 CFM against 850 CFM. Widest string trimmer: 17 in against 17 in.

At a glance

Fact Milwaukee M18 Ryobi 40V
Voltage on the label18 V40 V
Batteries13 packs, 2–12 Ah9 packs, 2–12 Ah
Garden tools listed29: 1 mower, 6 string trimmers, 6 leaf blowers, 7 hedge trimmers, 4 chainsaws, 2 pole saws, 1 power head, 2 other yard tools49: 10 lawn mowers, 7 string trimmers, 11 leaf blowers, 5 hedge trimmers, 8 chainsaws, 2 pole saws, 4 snow blowers, 2 other yard tools
Widest mower21 inM18 FUEL 21 in Self-Propelled Dual Battery Mower21 inHP Brushless 21 in Self-Propelled Mower
Strongest blower650 CFMM18 FUEL Dual Battery Backpack Blower850 CFMHP Brushless 850 CFM Backpack Blower
Widest string trimmer17 inM18 FUEL 17 in Dual Battery String Trimmer17 inHP Brushless 17 in Attachment Capable String Trimmer
Self-propelled mowers1 of 13 of 10
Longest tool warranty3 years5 years
Where it's soldSeveral storesOnly at The Home Depot

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

Do the batteries swap?

No. We have no source saying a Milwaukee M18 pack runs Ryobi 40V tools, or the other way round. Owning both means two sets of batteries and chargers, so choosing between them is choosing which tools you'll keep buying.

Which batteries work with Milwaukee M18 · Which batteries work with Ryobi 40V

Tool by tool

Each platform's products of a kind, biggest first by the spec that matters most for it. A dash means the brand publishes no figure we have read yet.

Batteries 13 vs 9

Milwaukee M18

Ryobi 40V

All batteries from both brands, spec by spec →

Lawn mowers 1 vs 10

Milwaukee M18

Ryobi 40V

All lawn mowers from both brands, spec by spec →

String trimmers 6 vs 7

Milwaukee M18

Ryobi 40V

All string trimmers from both brands, spec by spec →

Leaf blowers 6 vs 11

Milwaukee M18

Ryobi 40V

All leaf blowers from both brands, spec by spec →

Hedge trimmers 7 vs 5

Milwaukee M18

Ryobi 40V

All hedge trimmers from both brands, spec by spec →

Chainsaws 4 vs 8

Milwaukee M18

Ryobi 40V

All chainsaws from both brands, spec by spec →

Pole saws 2 vs 2

Milwaukee M18

Ryobi 40V

All pole saws from both brands, spec by spec →

Other yard tools 2 vs 2

Milwaukee M18

Ryobi 40V

All other yard tools from both brands, spec by spec →

Only one of them is listed with

  • Milwaukee M18 only: power heads & attachments.
  • Ryobi 40V only: snow blowers.

Not listed here doesn't mean the brand doesn't make one; the catalogue is still growing.

Ryobi 40V: packs that don't fit every tool

  • 6.0Ah 40V pack with some lawn mowers whose battery bay is too small: does not fit. walmart.com ↗ (retailer, not the brand's own word; read Oct 8, 2026)

Questions

Do Milwaukee M18 batteries work with Ryobi 40V tools?

No. We have no source saying a Milwaukee M18 battery runs Ryobi 40V tools, or the other way round, so owning both means two sets of packs and chargers.

Which has more garden tools, Milwaukee M18 or Ryobi 40V?

In this catalogue so far: 29 for Milwaukee M18 and 49 for Ryobi 40V. Both brands may make more than are listed yet.

Which has the bigger battery, Milwaukee M18 or Ryobi 40V?

By the brands' amp-hour figures, the largest Milwaukee M18 pack listed is 12 Ah and the largest Ryobi 40V pack is 12 Ah. Amp-hours only compare fairly at the same voltage (18 V against 40 V); watt-hours, where the brand states them, are on each battery's page.

Which makes the wider mower, Milwaukee M18 or Ryobi 40V?

By the brands' own figures: 21 in for Milwaukee M18 (M18 FUEL 21 in Self-Propelled Dual Battery Mower) and 21 in for Ryobi 40V (HP Brushless 21 in Self-Propelled Mower).

Which has the stronger leaf blower, Milwaukee M18 or Ryobi 40V?

By the brands' own figures: 650 CFM for Milwaukee M18 (M18 FUEL Dual Battery Backpack Blower) and 850 CFM for Ryobi 40V (HP Brushless 850 CFM Backpack Blower).

Which has the wider string trimmer, Milwaukee M18 or Ryobi 40V?

By the brands' own figures: 17 in for Milwaukee M18 (M18 FUEL 17 in Dual Battery String Trimmer) and 17 in for Ryobi 40V (HP Brushless 17 in Attachment Capable String Trimmer).

Which has the longer warranty, Milwaukee M18 or Ryobi 40V?

The longest tool warranty we have read is 3 years for Milwaukee M18 and 5 years for Ryobi 40V. Batteries often carry a shorter one; check each product's page.

Answered from the catalogue data, as of October 29, 2026. How we compare.

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