Head-to-head comparison

RY40HPLM05K vs. LM2138S

An independent, normalized comparison of the specifications and editorial scores that matter in your yard.

RY40HPLM05K

RYOBI

RY40HPLM05K

LM2138S

Greenworks

Decision guide

The clearest reasons to choose either model, followed by our overall winner.

Overall recommendation

RY40HPLM05K and LM2138S are evenly matched overall; choose by yard needs and power preference.

Side by side

Compare core specifications and normalized editorial scores. Highlighted cells show the stronger measurable result.

Show differences only

Specifications and scores for 40V HP Brushless 21" Push Mower Kit and 80V 21" 3-in-1 Self-Propelled Mower
Metric	RY40HPLM05K	LM2138S
Core specifications
Manufacturer MSRP	Not available	Not available
Power	Battery · 40V	Battery · 80V
Deck width	21 in	21 in
Drive	Push	Self-propelled Category winner
Battery runtime	55 min Category winner	45 min
Weight	Not available	71.65 lb

marks the stronger value for that metric. Power is judged using the normalized performance score.

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