EGO POWER+ LM2156SP
21" Select Cut XP Self-Propelled Mower
The strongest all-around fit here for buyers who want premium cutting features, long claimed runtime and a broad outdoor battery ecosystem.
Five current self-propelled mowers from EGO, RYOBI and DEWALT stand out for different buyers. The goal is not to crown one mower for everyone—it is to match deck size, runtime, drive system and battery platform to your lawn.
Selections are based on current manufacturer specifications, platform fit and intended use. Verify the exact model, included batteries and current seller terms before ordering.
No fake sale prices and no ranking based on a single voltage number. These picks fill different roles, from premium 21-inch mowing to smaller-lawn value.
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21" Select Cut XP Self-Propelled Mower
The strongest all-around fit here for buyers who want premium cutting features, long claimed runtime and a broad outdoor battery ecosystem.
21" Multi-Blade Self-Propelled Mower
A compelling option for larger residential lawns because the kit includes two 6Ah packs and RYOBI rates it for up to 3/4 acre under its stated conditions.
60V MAX 21" RWD Self-Propelled Mower
The logical candidate for buyers already invested in FLEXVOLT who want a steel-deck mower with dual blades, rear-wheel drive and long manufacturer-claimed runtime.
21" Self-Propelled Mower
A simpler route into EGO for buyers who want 21-inch self-propelled mowing without paying for the LM2156SP Select Cut XP feature set.
20" Self-Propelled Mower Kit
A more compact RYOBI option for roughly half-acre-or-smaller use where one 6Ah battery and a 20-inch deck fit the workload better than a larger two-battery kit.
Runtime figures are manufacturer claims under stated test conditions. Tall, wet or dense grass, self-propel use, blade mode, slopes and temperature can reduce real-world runtime.
| Model | Our fit | Deck | Included battery | Claimed runtime | Drive |
|---|---|---|---|---|---|
| EGO POWER+LM2156SP | Best overall | 21 in. | 10.0Ah included | Up to 75 min. | Touch Drive self-propel |
| RYOBI 40V HPRY40HPLM02K2 | Best long-runtime value | 21 in. | Two 6.0Ah included | Up to 75 min. | Smart Trek self-propel |
| DEWALT FLEXVOLTDCMWSP700Y2 | Best for DEWALT owners | 21 in. steel | Two FLEXVOLT packs included | Up to 85 min. | Rear-wheel drive |
| EGO POWER+LM2114SP | Best simpler EGO | 21 in. | 6.0Ah included | Up to 50 min. | Dual-toggle self-propel |
| RYOBI 40V HPRY40HPLM07K | Best for smaller lawns | 20 in. | 6.0Ah included | Up to 45 min. | Rear-wheel drive |
A mower can be excellent and still be wrong for your lawn. We separated the shortlist by use case instead of pretending every buyer needs the same machine.
EGO pairs a 21-inch deck with its Select Cut multi-blade system, Touch Drive self-propel and a 10Ah 56V pack. EGO states up to 75 minutes of runtime and 8.3 ft-lbs of cutting torque. That combination makes it the strongest all-around candidate here when premium features and an outdoor-focused battery ecosystem both matter.
RYOBI includes two 40V 6Ah batteries and rates this 21-inch multi-blade mower for up to 75 minutes and up to 3/4 acre under its test conditions. The attraction is not just runtime: those batteries can also support a large RYOBI 40V outdoor lineup.
DEWALT's 60V MAX mower uses a 21-inch steel deck, dual blades, rear-wheel drive and two included FLEXVOLT batteries. DEWALT states up to 85 minutes using both included batteries in succession. It is particularly interesting when the buyer already uses FLEXVOLT tools and wants those batteries to have value outside mowing season.
The LM2114SP keeps the 21-inch self-propelled format but steps down to a 6Ah battery and simpler dual-toggle drive system. EGO states up to 50 minutes of runtime. For a smaller lawn, paying for the LM2156SP's additional cutting and drive features may not be necessary.
RYOBI's 20-inch RY40HPLM07K uses one 6Ah 40V battery, rear-wheel self-propel and is rated for up to 45 minutes or about 1/2 acre under the manufacturer's conditions. A smaller deck and simpler battery plan can be a better fit when storage and lawn size do not justify a larger kit.
The mower is only part of the purchase. The batteries, charger and future tools determine how useful the system becomes after the first mowing season.
Use your normal mowing time—not only acreage. Slopes, obstacles, thick grass and bagging can make a small lawn more demanding than a larger open one.
A single large pack and two medium packs can create very different charging and weight tradeoffs. Compare the complete kit, not just voltage.
Self-propel saves effort but consumes energy. Rear-wheel drive can help on uneven terrain; control feel matters as much as top speed.
Mulching quality, bagging suction, discharge behavior and blade configuration affect results more than marketing language about battery power.
If the same packs can power a blower, trimmer, chainsaw or other equipment you actually need, the battery investment becomes easier to justify.
Check warranty, service path, blade availability and how the mower folds. Battery equipment still needs blades, cleaning and sensible battery storage.
Battery is especially attractive when you value instant starting, lower routine maintenance, quieter operation and a platform that can power multiple yard tools.
Long continuous mowing, remote properties, commercial duty cycles or a lawn that regularly exceeds your battery plan can make fast refueling more valuable than cordless convenience.
Run the ownership-cost numbers instead of assuming either power source is automatically cheaper.
Open cost calculatorStart with the time your current mowing session actually takes, then leave margin for thicker grass, slopes, self-propel use and battery aging. A mower rated for exactly your best-day mowing time can feel undersized in tougher conditions.
No. Voltage is one part of a system. Motor design, electronics, current delivery, blade system and total battery energy all affect performance. Compare the complete mower rather than ranking products by voltage alone.
Usually that deserves serious weight because compatible packs may lower your effective cost and give you backup runtime. But compatibility should not override deck size, mowing performance, service support or other requirements that matter more for your lawn.
Manufacturer runtime is useful for comparison but is measured under particular test conditions. Real runtime changes with grass height and moisture, blade mode, self-propel use, terrain, temperature and battery condition.
Lithium-ion capacity declines with age and use. Check replacement-pack availability and cost before choosing a platform, especially when a mower depends on large-capacity batteries.