Two numbers appear on nearly every robot mower spec sheet: how long it runs on a charge, and how long it takes to charge again. They are useful. They are also routinely turned into conclusions they cannot support.
What the two numbers are
Runtime is how long the mower cuts on a full charge. Manufacturers usually publish this as a typical or maximum figure.
Charge time is how long it takes to refill the battery. A mower that charges quickly spends more of the day available, which is why a short charge time can matter as much as a long runtime.
Robot mowers are designed to cut little and often, returning to the dock on their own. Neither figure is a target you need to plan your day around.
What the models we track publish
Published runtime and charge time
| Model | Runtime | Charge time | Coverage |
|---|---|---|---|
| ANTHBOT Genie 3000 | 240 min | 90 min | 0.74 acres Also stated as 0.89 acres |
| Segway Navimow X390 | 240 min | 100 min | 2.50 acres |
| Husqvarna Automower 450X EPOS | 210 min | Not published | 2.50 acres |
| Segway Navimow X350 | 200 min | 80 min | 1.50 acres |
| Mammotion LUBA 2 AWD 10000 | 180 min | 150 min | 2.47 acres |
| Segway Navimow X330 | 160 min | 65 min | 1.00 acres |
| Husqvarna Automower 435 iQ AWD | 145 min | 45 min | 0.90 acres |
| Husqvarna Automower 435X AWD | 145 min | 45 min | 0.90 acres |
| Husqvarna Automower 440 iQ | 138 min | 54 min | 2.00 acres |
| ANTHBOT Genie 1000 | 120 min | 90 min | 0.25 acres Also stated as 0.49 acres |
| Mammotion LUBA 2 AWD 5000 | 120 min | 150 min | 1.24 acres |
| Segway Navimow i110 | 120 min | 120 min | 0.25 acres |
| Husqvarna Automower 410 iQ | 84 min | 108 min | 0.50 acres |
| Segway Navimow i105 | 60 min | 90 min | 0.13 acres |
| Husqvarna Automower 415X | 50 min | Not published | 0.37 acres |
Figures come from each manufacturer's own published material. Follow a model link for the exact source and the date it was last checked.
Where manufacturers qualify their runtime figure, the qualifier is recorded with it:
The calculation we deliberately do not do
It is tempting to combine runtime, charge time, and cutting width into an estimate of area covered per day, and to rank mowers on the result.
We do not, for a straightforward reason: it would be a specification nobody published. Runtime is measured under conditions manufacturers describe only loosely. Cutting width does not translate directly into ground covered, because mowers overlap passes, navigate obstacles, and return to dock. Multiplying these figures together produces a confident-looking number built on assumptions we would be making up.
Where a manufacturer publishes a throughput figure of its own — an area-per-day or area-per-cycle claim — that belongs to the manufacturer and is recorded against the model with its source. What we will not do is derive one ourselves and present it as comparable across brands.
This is the same rule applied elsewhere on the site: we do not infer capability from related specifications.
How much this should influence your decision
Less than it might seem, for most yards.
For a lawn comfortably within a model’s published coverage rating, runtime is largely a background detail — the mower manages its own schedule. Runtime and charge time become more interesting as your lawn approaches the top of a model’s stated coverage, or where mowing windows are constrained, for example by noise rules or shared access.
If you are near the top of a rating, that is a question worth putting to the seller, alongside the coverage qualifier for the model — see what “up to one acre” actually means.
To see these figures alongside everything else for specific models, use the comparison tool.