Jesse Moran
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The YARDCARE M800Plus is designed to maintain a lawn with less manual mowing and without a buried perimeter wire. I tested it in my backyard, watched it respond to trees and branches, changed among its mowing modes, and learned one setup detail that initially made the mower appear completely dead.
The hidden power switch is the first thing to check
My mower showed a full charge on the dock but shut down as soon as it left. The cause was not a failed battery: a physical on/off switch underneath the mower ships in the Off position. The switch is tucked near the rear underside and is easy to miss.
If a new M800Plus charges but will not operate, turn the mower over safely, locate that switch, and confirm it is on before troubleshooting anything more complicated.
Controls, cutting height, and dock
Top controls provide cutting-height positions marked from 20 to 60 and manual runtime choices from two to ten hours. The mower can be started or sent home from the control panel, while the app adds remote starting and scheduling.
The charging contacts are on the side of the mower and meet the dock when it returns. The video states approximately 100 minutes of mowing on a charge, followed by an automatic return to the dock. I did not log a complete battery cycle with a stopwatch, so that runtime should be treated as stated rather than independently measured.
Obstacle avoidance in my yard
A front camera with a stated 135-degree field of view helps the mower identify boundaries and obstacles. During my demonstration, it noticed a tree, redirected itself, and worked around other objects. Its traction wheels also climbed uneven sections and rolled over a fallen branch.
No obstacle-avoidance system should replace a quick yard inspection. Small items, holes, pets, toys, and unusual edges can create situations that one short test does not cover.
Random, spiral, and combined mowing modes
Random mode sends the mower around the lawn without a fixed row pattern. Spiral mode starts a circular path and gradually expands it. The standard combined routine begins with straight rows for roughly 40 minutes and then changes to random mowing for the remaining portion of the stated 100-minute cycle. After charging, it can return and approach the lawn in the opposite direction.
The combined mode is where I would start because the row pattern provides visible coverage while the random portion helps reach areas the rows may miss.
Cutting results and yard size
I let my grass grow for about a week so the difference would be visible. In the footage, the cut path was shorter than the untouched grass beside it. My backyard is around one-fifth of an acre, and the mower handled that demonstration area well. I suggested it for yards around one-fifth to one-third of an acre based on the setup shown, not a measured maximum-capacity test.
Rain detection
The app includes rain detection that can prevent mowing when the grass is wet. I like having that option because wet mowing can produce a poorer cut and more buildup, but I did not simulate rain to verify the trigger behavior in this review.
What I liked
- No buried boundary wire was needed for the demonstrated setup.
- Obstacle avoidance visibly redirected around a tree.
- Several mowing patterns and scheduling options.
- Replaceable blades and accessible cutting-height adjustment.
- Automatic docking and optional rain detection.
What to consider
- The underside power switch is easy to overlook during setup.
- The 100-minute runtime was stated, not stopwatch-tested.
- Rain detection and the full automatic recharge-and-resume cycle were not independently tested.
- Complex yards still need careful setup and an obstacle check.
My verdict
The YARDCARE M800Plus did a convincing job in my backyard demonstration. It cut a visible path, changed direction around obstacles, and offered enough modes to adapt the mowing pattern. The hidden power switch is a frustrating first-use detail, but once enabled, the mower was easy to control from the panel or app.
