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Add to SafariWhen comparing Robomow RS630 vs Black & Decker CM2040, the Slant community recommends Black & Decker CM2040 for most people. In the question“What are the best lawn mowers?” Black & Decker CM2040 is ranked 3rd while Robomow RS630 is ranked 4th. The most important reason people chose Black & Decker CM2040 is:
Because of its lightweight design, easy maneuverability, quiet operation, and the limitations of the use of batteries, it is best used on lawns that are well maintained, without tall and thick grass. If the grass is easy to cut the mower should last enough to complete the job without overheating or simply running out of juice.
Specs
Question Ranking
Pros
Pro Great for medium sized lawns
On a single charge, The Robomow RS630 can work for up to 70 minutes and is a great choice for lawns of up to 0.75 acres.
Pro Can follow a set schedule
You can set up a schedule for your lawn mower. For example to start mowing every day at 10:00.
Pro Has a convenient app
With the Robomow app, you can get a brief overview of mower’s state, like remaining mowing time and battery life. You can also remotely control your robotic lawn mower from your smartphone.
Pro A wide cut thanks to a twin blade system
Because the Robomow RS630 uses two blades, it has a cut width of 22 inches, which is more than most robotic lawn mowers. Thanks to its dual blade system, it can cover a larger area on a single charge, which saves time and energy.
Pro Adjustable cutting height
The cutting height can be adjusted from 0.78 to 3.14 inches. This can be done manually trough base or via an app.
Pro Perimeter wire is included
With the Robomow RS630, you also get 1,300 feet of perimeter wire, which is enough to cover 0.75 acres. Though if you want to create multiple zones, you’ll have to buy additional wire.
Pro Has multizone capability
This machine can mow up to four individual zones. Zones are different sections of your lawn. Your front yard and back yard can be split into different zones and mowed separately.
Pro Perfect for regularly cut lawn
Because of its lightweight design, easy maneuverability, quiet operation, and the limitations of the use of batteries, it is best used on lawns that are well maintained, without tall and thick grass. If the grass is easy to cut the mower should last enough to complete the job without overheating or simply running out of juice.
Pro Highly maneuverable
Due to its light weight and well-designed deck, you will have no trouble maneuvering between obstacles, and working in tight spaces. The deck has thin borders and it is the widest part of the mower, so you can cut the grass really close to walls and objects.
Pro Comes with two batteries
This lawn mower comes with two 40 V 2.5 Ah batteries. When you mow the lawn, you can store the second battery inside the mower and quickly swipe them on the go.
Pro Height can be adjusted
This lawn mower has six different height positions (between 1.5" and 4"), so you can things like setting it to a high position and for initialing cutting the top of the grass, and then finishing it off to our desired height.
Pro Quiet
Since there is no gas engine involved, the mower is quiet and you can cut your lawn even in the early morning hours without disturbing your neighbors.
Pro The deck is light and durable
The deck is made from a polymer, so it is lightweight and will not rust.
Pro Key lock prevents accidental use
The mower has a safety key to pull out in emergencies, to cut off the power. It also can be used to avoid accidental operation by children.
Cons
Con Struggles with slopes and hills
This lawn mower can handle only a 20-degree slope, anything steeper than that will have uneven cut or won’t be cut at all.
Con Not ideal for heavy jobs
If the grass hasn’t been mowed for a while, you can still use this mower, but that might put some unwanted pressure on both the tool and its batteries.
Con Long battery charging time
It takes about 90 minutes to charge a battery fully. Additionally, the cells can't start the charging process until they are cooled down.
Con Not the biggest bag capacity
The bag can hold up to 1.6 bushels of grass. While enough for a small lawn, it will require lots of emptying if the property you plan to mow is large.
Con Blade might need to be sharpened initially
Some users say that the blade came too blunt and needed to be taken off and sharpened to eliminate patches of uncut grass.
Con Short runtime
One battery lasts for about 20 minutes, but this can significantly vary and be reduced to only 10 minutes, if you are cutting very thick grass.
Con Hasn’t got self-propulsion
You have to push the mower yourself, since there isn’t any self-propulsion system. Luckily, it's a light unit.
Con Can overheat in long grass
If the grass is very long, it is better to set the mower to the highest position, as it can overheat quickly. If it overheats, it switches off, and you have to wait until it cools down.
