Gardena Smart Sileno Free 800m² VS Gardena Smart Sileno Pro 600m²

The most immediately practical difference between these two mowers lies in their cutting width and coverage capacity. The Sileno Free 800m² sports a 22 cm blade versus the Sileno Pro 600m²'s narrower 16 cm, a 37% wider cut that directly explains why the Free handles a recommended area of 800 m² (with a maximum of 960 m²) while the Pro is rated for 600 m² (up to 720 m²). In practice, the wider blade means fewer passes per mowing cycle, which translates into shorter total run times and potentially extended battery life per session — a real advantage on larger, open lawns.

On the connectivity front, both models are identically matched: each offers a dedicated smartphone app, Bluetooth control, and remote smartphone support, but neither supports Wi-Fi. This means both rely entirely on Bluetooth proximity for app communication — a limitation worth noting if you want to monitor or adjust your mower from inside the house or remotely over the internet. There is no edge here; users of both models will face the same connectivity constraints.

One counterintuitive differentiator is weight: despite its larger coverage spec, the Free 800m² weighs 13,820 g compared to the Pro 600m²'s notably lighter 8,600 g — a difference of over 5 kg. This makes the Pro significantly easier to lift, carry, and maneuver manually, which matters during setup, repositioning, or moving the unit over obstacles. Noise levels are essentially a wash at 58 dB vs 57 dB (both drop to 50 dB in eco mode). Overall, the Sileno Free 800m² holds a clear edge for larger lawns thanks to its wider cut and greater coverage, while the Sileno Pro 600m² wins on physical handling ease — making it the more practical choice for smaller gardens or users who prioritize a lighter, more manageable unit.

Across every feature in this group, the Sileno Free 800m² and the Sileno Pro 600m² are a perfect mirror of each other. Both include obstacle sensing, a rain sensor, a frost sensor, auto docking, scheduling, weather adaptation, and the ability to work in rain — a notably comprehensive suite for autonomous lawn care. The frost sensor in particular is a meaningful inclusion, as it prevents the mower from operating in conditions that could damage both the lawn and the machine, requiring no user intervention.

Neither model integrates with Alexa or Google Assistant, and neither has an onboard display or anti-theft features. The absence of anti-theft protection is worth flagging for users planning to operate in less secure environments — both models are equally exposed here, and external solutions would need to be considered for either choice.

Since every feature in this group is shared identically, this is a complete tie. The feature set itself is well-rounded and automation-focused, but it offers no basis for choosing one model over the other. The decision should rest entirely on the differentiators found in other specification groups, such as coverage capacity or physical characteristics.

Where this group gets interesting is throughput. The Sileno Free 800m² delivers a working area capacity of 87.27 m²/h against the Sileno Pro 600m²'s 40 m²/h — more than double the coverage rate per hour. Paired with a mowing time of 140 minutes versus just 50 minutes per session, the Free is clearly engineered for sustained, high-output operation. In practice, this means the Free can cover significantly more ground in a single run before returning to its dock, reducing the number of daily cycles needed and making it genuinely better suited to the larger lawns it is designed for.

Cutting flexibility is identical between the two: both offer 3 cutting height settings spanning 25 mm to 45 mm, and both handle slopes up to 30%. The shared slope performance is a meaningful commonality — 30% gradient tolerance is solid for residential gardens with uneven terrain, and neither model has an edge here.

The Sileno Free 800m² holds a decisive performance advantage in this group. Its dramatically higher area capacity and longer mowing sessions are not marginal improvements — they represent a fundamentally different operational tier. For anyone with a lawn approaching the Pro's own rated limit, the Free's throughput figures suggest it would handle the workload with considerably more efficiency and fewer charging interruptions.

At the electrical level, these two mowers are nearly identical: both run on 18.5V, draw 43.37W, and feature a removable battery — a practical convenience that allows users to swap in a spare rather than waiting for an in-dock charge cycle to complete. The shared wattage confirms neither model has a power delivery advantage over the other at the system level.

The sole differentiator here is charge time: the Sileno Pro 600m² replenishes in 1.17 hours, while the Sileno Free 800m² takes 1.67 hours — about 30% longer. Given that both models draw identical wattage, this gap most likely reflects a larger battery capacity in the Free, which aligns with its significantly longer mowing sessions established in the performance group. In other words, the longer charge time is a direct consequence of having more energy to restore, not a charging inefficiency.

Taken in context, the Sileno Pro 600m² holds a narrow edge here on turnaround speed — it gets back to work faster after docking. However, this advantage needs to be weighed against the Free's much longer per-session runtime. For most users, the Free's extended mowing time will reduce how often it needs to charge at all, making the longer charge duration a reasonable trade-off rather than a genuine disadvantage.