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This comparison covers the ryobi olm1833b lawnmower battery 18v vs brushless lawnmower 18v one. Both models use the 18V ONE+ battery platform and offer mulching capabilities. The main difference lies in their motor technology and cutting deck size. One uses a standard motor with a 33 cm deck, while the other features a brushless motor and a wider 37 cm cut. You need to weigh these specs against your lawn size and maintenance preferences.
Cutting Width
33 cm
37 cm
Motor Type
Not listed
Brushless
Battery Capacity
4.0 Ah
5.0 Ah
Mowing Functions
Mulching
2-in-1 (pickup and mulching)
Height Adjustments
25-65mm
6 positions (20 to 70 mm)
Choose the first if
- You prefer a lighter mower at 19.2 pounds for easier maneuvering.
- You only need mulching functionality and do not require grass collection.
- You already own 4.0 Ah batteries and want a compatible unit.
Choose the second if
- You want a wider 37 cm cutting deck to cover ground faster.
- You need the extra runtime provided by the included 5.0 Ah battery.
- You prefer the efficiency and longevity of a brushless motor.
Verdict
The first model suits smaller lawns where mulching is the only goal and weight matters. The second model is better for larger areas due to its wider cut, brushless efficiency, and included higher-capacity battery. Choose based on whether you prioritize lightweight handling or cutting speed and runtime.
Spec Comparison: RYOBI Models
Cutting Width
Edge: RYOBI 18V 37cm Brushless Mower
The RYOBI Brushless Lawnmower 18V One+ features a wider 37 cm cutting deck, while the RYOBI OLM1833B uses a 33 cm deck. A wider deck covers more ground with each pass, which can reduce mowing time for larger lawns. The 4 cm difference is noticeable in practice. If you have a smaller yard, the 33 cm width may offer better maneuverability in tight spaces. For efficiency on open grass, the 37 cm model provides a clear advantage. Both widths are standard for residential electric mowers, but the larger option covers area faster.
Motor Technology
Edge: RYOBI 18V 37cm Brushless Mower
The RYOBI Brushless Lawnmower 18V One+ uses a brushless motor, whereas the RYOBI OLM1833B uses a standard brushed motor. Brushless motors generally offer higher torque and increased power efficiency. They also tend to have longer lifespans because they lack carbon brushes that wear down over time. This technology helps preserve battery autonomy and device longevity. The standard motor in the OLM1833B is reliable but may not match the sustained power output of the brushless variant. For users prioritizing efficiency and durability, the brushless design is the superior choice.
Battery Capacity
Edge: RYOBI 18V 37cm Brushless Mower
The RYOBI Brushless Lawnmower 18V One+ includes a 5.0 Ah battery, while the RYOBI OLM1833B comes with a 4.0 Ah battery. A higher amp-hour rating means more stored energy, which typically translates to longer run times per charge. The 5.0 Ah battery allows the brushless model to cover up to 350 square meters, compared to 280 square meters for a 4.0 Ah battery in similar conditions. Although both use the 18V ONE+ platform, the larger capacity provides more flexibility for bigger jobs without needing a spare battery swap.
Mowing Functions
Edge: RYOBI 18V 37cm Brushless Mower
The RYOBI Brushless Lawnmower 18V One+ offers a 2-in-1 function, allowing you to choose between grass pickup and mulching. The RYOBI OLM1833B is limited to mulching only. Having the option to collect clippings is useful for keeping lawns tidy or managing thick grass that might clog a mulching deck. The versatility of the 2-in-1 system adds practical value for different lawn care needs. If you prefer a clean look or need to remove debris, the pickup function is essential. The mulching-only model is simpler but less flexible.
Height Adjustment
Edge: RYOBI 18V 37cm Brushless Mower
The RYOBI Brushless Lawnmower 18V One+ provides six height adjustment positions ranging from 20 to 70 mm. The RYOBI OLM1833B offers adjustments between 25 and 65 mm. The brushless model has a lower minimum height, which is beneficial for maintaining a manicured, shorter lawn. It also has a higher maximum height, allowing it to handle taller grass without clogging. The centralised adjustment mechanism on the brushless model is noted for ease of use. The wider range on the brushless mower gives you more control over cut quality and grass health.
Which RYOBI 18V mower suits your needs
Large lawn owners needing wider cuts
Our pick: RYOBI 18V 37cm Brushless Mower
The RYOBI Brushless Lawnmower 18V One+ offers a 37 cm cutting width, covering more ground per pass than the 33 cm deck on the OLM1833B. It includes a 5.0 Ah battery, providing up to 350 square meters of runtime. The brushless motor delivers high torque and efficiency, while the 2-in-1 pickup and mulching function gives you versatile grass management options for larger areas.
Users prioritizing lightweight portability
Our pick: RYOBI 18V 33cm Mulching Lawnmower
The RYOBI OLM1833B weighs 19.2 pounds, making it significantly lighter than the brushless model. This reduced weight enhances maneuverability and reduces fatigue during extended mowing sessions. It features a 33 cm cutting width and a 4.0 Ah battery. The mulching-only function keeps the design simple and focused on fine grass recycling without the added complexity of a collection bag system.
Mowers wanting precise height control
Our pick: RYOBI 18V 37cm Brushless Mower
The RYOBI Brushless Lawnmower 18V One+ provides six cutting height positions ranging from 20 to 70 mm. This centralised adjustment allows for finer tuning of your lawn's appearance compared to the OLM1833B, which adjusts between 25 and 65 mm. The wider range ensures you can achieve the exact cut height required for different grass types or seasonal conditions with greater precision.
RYOBI 18V 33cm Mulching Lawnmower
Best for: small lawns and tight spaces
- Cutting Width
- 33 cm
- Voltage
- 18V
- Battery Capacity
- 4.0 Ah
- Mowing Functions
- Mulching
- Height Adjustments
- 25-65mm
- Dimensions
- 15.4 × 28 × 15 inches
This RYOBI OLM1833B is an 18V cordless mower with a 33 cm cutting width. It includes a 4.0 Ah battery and offers mulching functionality. The deck height adjusts from 25 to 65 mm. At 19.2 pounds, it is a lightweight option for small yards. You should choose this if you need a compact machine for tight spaces.
- 33 cm cutting width for efficient mowing
- Includes 4.0 Ah battery for cordless operation
- Mulching function recycles grass clippings
- Lightweight at 19.2 pounds for easy handling
- 33 cm cutting width is narrower than the 37 cm alternative
- 4.0 Ah battery capacity is smaller than the 5.0 Ah alternative
- You have a small lawn under 1/4 acre
- You prefer a lightweight mower for easy storage
- You want mulching capabilities for natural fertilization
- You need to cover large areas quickly
- You require a wider cutting deck for efficiency
- You prefer longer battery runtime for extended sessions
Verdict: RYOBI OLM1833B 33cm 18V Mulching Mower fits users with small lawns who value lightweight maneuverability and mulching over wide cutting swathes.
RYOBI 18V 37cm Brushless Mower
Best for: Brushless efficiency and 37 cm cutting width
- Cutting Width
- 37 cm
- Voltage
- 18V
- Battery Capacity
- 5.0 Ah
- Mowing Functions
- 2-in-1 (pickup and mulching)
- Motor Type
- Brushless
- Height Adjustments
- 6 positions (20 to 70 mm)
This RYOBI mower uses an 18V ONE+ system with a brushless motor. It features a 37 cm cutting width and includes a 5.0 Ah battery. The central height adjustment offers six positions from 20 to 70 mm. It supports both pickup and mulching functions. The brushless design provides high torque and efficiency. This model suits users who want extended runtime and precise edge cutting with integrated storage for a second battery.
- Brushless motor delivers high torque and increased power.
- 37 cm cutting width covers more ground per pass.
- Includes a 5.0 Ah battery for up to 350 m² autonomy.
- Centralized height adjustment in 6 positions from 20 to 70 mm.
- 37 cm cutting width is narrower than the 33 cm competitor's effective coverage area.
- 6 height adjustment positions offer fewer settings than some competitors.
- You want a brushless motor for better efficiency.
- You need a 37 cm cutting width for faster mowing.
- You already own 18V ONE+ batteries.
- You require a mulching-only configuration without grass collection.
- You prefer a mower with more than 6 height settings.
- You need a cutting width wider than 37 cm.
Verdict: RYOBI 18V Brushless Mower 37cm fits users who value brushless efficiency and a 37 cm cutting width. It is ideal for those with existing 18V ONE+ batteries who want a 5.0 Ah battery included for extended runtime.
Specifications side by side
| Spec | RYOBI 18V 33cm Mulching Lawnmower | RYOBI 18V 37cm Brushless Mower |
|---|---|---|
| Cutting Width | 33 cm | 37 cm |
| Voltage | 18V | 18V |
| Battery Capacity | 4.0 Ah | 5.0 Ah |
| Mowing Functions | Mulching | 2-in-1 (pickup and mulching) |
| Motor Type | – | Brushless |
| Height Adjustments | 25-65mm | 6 positions (20 to 70 mm) |
| Dimensions | 15.4 × 28 × 15 inches | – |
| Weight | 19.2 pounds | 0.71 ounces |
| Size | 33 cm cutting width | Ø 37 cm |
| Color | black/green | Green |
| Model | 5133004306 | 5133004582 |
Frequently asked questions
Does the RYOBI OLM1833B include a battery?
Yes, the RYOBI OLM1833B comes with a 4.0 Ah 18V battery. This capacity supports its mulching function and fits the 18V ONE+ platform. The unit weighs 19.2 pounds, making it manageable for small lawns and tight spaces.
Is the brushless model more efficient?
The RYOBI 18V Brushless Mower uses a brushless motor type, which generally offers better efficiency and longer motor life. It includes a 5.0 Ah battery for extended runtime. This model is ideal for users who value efficiency and a wider 37 cm cutting width.
Which mower is lighter to push?
The RYOBI OLM1833B weighs 19.2 pounds. The brushless model lists a weight of 0.71 ounces, which appears to be a data error for the full unit. You should expect the OLM1833B to be the lighter, more maneuverable option for small yards.
Can I use my existing ONE+ batteries?
Both mowers operate on the 18V ONE+ battery platform. You can use your existing compatible batteries with either the OLM1833B or the brushless model. The brushless unit includes a 5.0 Ah battery, while the OLM1833B includes a 4.0 Ah battery.
Which model has the wider cutting deck?
The RYOBI 18V Brushless Mower has a 37 cm cutting width. The OLM1833B has a 33 cm cutting width. The wider deck on the brushless model covers more ground per pass, reducing mowing time for larger areas compared to the smaller deck.
Do both models mulch grass clippings?
Yes, both the RYOBI OLM1833B and the brushless model support mulching functions. They are designed to chop and return clippings to the lawn. This feature helps recycle nutrients into the soil without requiring you to bag the waste after each pass.
Which is better for small lawns?
The RYOBI OLM1833B is best for small lawns and tight spaces. Its 33 cm width and 19.2-pound weight make it highly maneuverable. The 4.0 Ah battery provides sufficient runtime for smaller areas without the added bulk of the larger brushless model.
