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Ryobi 18V ONE+ HP Brushless 20" Self-Propelled Mower Kit

Ranked #14 of 18 in Best Cordless Lawn Mowers: Greenworks & Ryobi Push and Self-Propelled (2026). Here is every spec we scored, where it came from, and how it compares.

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R

#14

Ryobi 18V ONE+ HP Brushless 20" Self-Propelled Mower Kit

Best for: Self-propelled mower on 18V ONE+ batteries

3.5/10

What we like

Watch out for

Score breakdown

Deck width 25%

Kit battery energy 20%

Runtime 15%

Rated lawn size 15%

Cutting-height range 10%

Self-propelled 10%

Listed weight 5%

Deck width	20 in
Kit battery energy	216 Wh
Runtime	40 min
Rated lawn size	0.5 acres
Cutting-height range	2.5 in
Self-propelled	Yes
Listed weight	56.8 lb
Kit battery	(2) 18 V 6 Ah = 216 Wh (computed)
Cutting height	1.5–4 in
Cutting-height range	2.5 in (computed: max minus min)
Rated lawn size	Up to 1/2 acre (0.5 acres, computed)
Batteries	Needs two batteries to run
Price	Check price

Check price at Amazon

Specs source:

Ryobi: 18V ONE+ HP 20" Self-Propelled Mower Kit

How it compares

Open the full comparison table

Ryobi 80V HP Brushless 30" Self-Propelled Multi-Blade Mower Kit

#1 · The widest deck and biggest battery here

Greenworks 60V 25" Dual-Blade Self-Propelled Mower (LM2516S)

#2 · 25 in deck rated for 1 acre

Greenworks 80V 21" 4-in-1 Self-Propelled Mower (LM2108S)

#3 · 8 Ah 80V battery rated for 3/4 acre

Ryobi 40V HP Brushless 21" Self-Propelled Mower Kit (RY40HPLM01K2)

#4 · 80 min runtime on two 6 Ah batteries

Ryobi 40V HP Brushless 21" Self-Propelled AWD Multi-Blade Mower Kit (RY40HPLM03K2)

#5 · All-wheel drive with two 6 Ah batteries

Greenworks 80V 25" Dual-Blade Self-Propelled Mower (LM2508S)

#6 · 25 in deck on one 80V 4 Ah battery

Greenworks 60V 21" Self-Propelled Mower (LM2116S)

#7 · Two 60V 4 Ah batteries for 3/4 acre

Greenworks 40V 25" Dual-Blade Self-Propelled Mower (LM2504S)

#8 · 25 in deck on the 40V platform

Greenworks 48V (24V x 2) 21" Self-Propelled Mower (LM2112S)

#9 · Runs on two 24V USB batteries

Ryobi 40V HP Brushless 20" Self-Propelled Multi-Blade Mower Kit

#10 · Self-propelled 20 in with an 8 Ah battery

Greenworks 40V 21" Self-Propelled Mower (LM2154S)

#11 · Single 5 Ah battery, 1/3 acre

Ryobi 40V HP Brushless 21" Push Mower Kit

#12 · 21 in push mower with an 8 Ah battery

Ryobi 40V HP Brushless 20" Self-Propelled Mower Kit

#13 · Lightest self-propelled mower here at 42.8 lb

Greenworks 60V 21" Push Mower (LM2116)

#15 · 21 in push mower on a 60V 5 Ah battery

Greenworks 40V 20" Push Mower (LM2034)

#16 · 20 in push mower for 1/3 acre

Ryobi 18V ONE+ HP Brushless 16" Push Mower Kit

#17 · Lightest mower here at 34.4 lb

Greenworks 40V 17" Push Mower (LM1724)

#18 · Compact 17 in mower for 1/4 acre