TerraMow S1200 vs S800 Review (2026): Multi-Base Split Yards, 800 vs 1,200 m²

S1200 vs S800: one spec decides it

TerraMow's own S-series comparison table lists 20 specs for the two models. Only one differs: recommended mowing area, 800 m² for the S800 and 1,200 m² for the S1200 (TerraMow table, March 2025 capture). Cutting width, cutting height, battery, runtime, slope, noise, weight and dimensions are identical.

TerraMow adds that the S1200 "comes with a more powerful chip and increased memory to handle more map data and complex mowing tasks." It publishes no chip or memory figures. So the buying question is lawn area, and nothing else on the spec sheet.

S800 or S1200: which should you buy?

Add every lawn zone together, then compare that total with the rating. TerraMow's S1200 FAQ says the model "is specifically designed for lawns up to 1200 square meters." It warns that a larger lawn "might impact the robot's map-building and visual positioning capabilities" (TerraMow FAQ, March 2025 capture). TerraMow uses the same "designed for lawns up to" wording for the S800's 800 m².

Here is that rule applied to three split front and back yards. Mowing hours use TerraMow's published rate of 100 to 150 m² per hour.

When the S800 is enough. Your zones total 800 m² (8,611 ft²) or less. The S1200 adds nothing you can use on that lawn except processing headroom.

When it isn't. The middle yard totals 950 m². Treat each zone as its own 800 m² allowance and the S800 looks fine, since both halves fit. Treat the rating as a total and that yard is about 19% over. TerraMow's pages do not settle which reading is right.

What the wrong choice costs. A two-lawn setup needs one extra base station, listed at €169* (TerraMow store). That makes the S800 setup €1,368* and the S1200 setup €1,568*, a €200* gap. Buy the S800 for a 950 m² yard and you save that €200* but mow outside the area TerraMow designed it for. Buy the S1200 for a 700 m² yard and you spend €200* more for 500 m² of rating you never use.

Runtime check. Each charge gives 120 minutes of mowing, then a 120-minute recharge. A full 1,200 m² pass is 8 to 12 mowing hours, which is 4 to 6 full battery runs. Split across two bases, each zone still needs its own share of those runs.

If both halves together pass 1,200 m², neither S model is rated for your property. TerraMow's pages list no larger S-series model.

Does a second base double the coverage? TerraMow doesn't say

Our earlier S800 review said "up to 800 m² combined" in one place and "per single zone" in another. We went back to TerraMow's documentation to settle it. It doesn't settle it.

• The Multi-Base Mode page says one base station per lawn is required. It gives no area figure.
• The S-series page says extra bases "cover vast or fragmented lawns" and act as "a charging hub and map anchor." It gives no area figure.
• The V-series page says extra bases "extend single-base range across large or separated lawns." Range there could mean travel distance or area. The page doesn't define it.
• The live S-series page's comparison table lists 800 m² in both the S800 and S1200 columns. That contradicts TerraMow's own product FAQ, so we use the product-page table instead.

The cautious reading follows TerraMow's FAQ wording: the rating describes the lawn the robot looks after, and no page says multi-base multiplies it. Size by total area. If per-base sizing would let you buy the cheaper S800, get it in writing first from TerraMow support (support@terramow.com, listed on its product pages).

Multi-base is no longer an S-series exclusive

Both of our earlier TerraMow S reviews said the V-series lacks multi-base mode. TerraMow's current V-series page lists Multi-Base Mode next to standard and spot mode. Its spare base station is sold as compatible with the V600, V1000, S800 and S1200.

Cross that with TerraMow's model comparison. The V1000 carries the same 1,200 m² rating as the S1200, with a 150-minute runtime and TerraVision 2.0 triple-camera navigation. On 2026-09-13 its EU variant was in stock at €1,149*, while every S1200 variant was sold out at €1,399*. A two-base V1000 setup comes to €1,318*, which is €250* below a two-base S1200.

What the S1200 keeps is slope. TerraMow rates the S-series at 20° (36%) and the V600 and V1000 at 18° (32.5%). If your steepest mowed section sits between those two figures, the S-series is the TerraMow rated for it. If it doesn't, waiting on S1200 stock buys you nothing the V1000 lacks on paper.

TerraMow S800 specifics

The S800 is the S1200's body, battery and cutting deck with an 800 m² (0.2 acre) rating instead of 1,200 m². TerraMow's table gives both models the same 203 mm cutting width, 25-75 mm cutting height, 120-minute runtime and 12.5 kg weight. TerraMow names the chip and memory upgrade as the only hardware difference on the S1200.

• Rated area: 800 m², or 5.3 to 8 mowing hours per full pass at TerraMow's 100 to 150 m² per hour. That is 3 to 4 full battery runs.
• Price: €1,199* on TerraMow's store, sold out in every region on 2026-09-13. The last USD list price we found there was $1,249* (March 2025). In October 2024 it was $1,349*.
• Where it fits: split yards totalling 800 m² or less, on slopes between 18° and 20°. Below 18°, TerraMow's V600 (600 m²) and V1000 (1,200 m²) are rated for the same terrain, and the V-series page lists multi-base mode too.
• Navigation: TerraMow's S-series page describes three automotive-grade cameras. The V-series is marketed as TerraVision 2.0 with upgraded cameras. TerraMow does not publish a camera-by-camera comparison.
• Blades: TerraMow claims its SK5 high-carbon blades are "2X sharper than stainless steel" with "50% fewer blade replacements." It publishes no replacement interval, and we have not measured one.

Placing base stations on a split yard

TerraMow's current FAQ sets these rules. It does not name a model, so confirm them against the S1200/S800 manual on TerraMow's help center.

• Put each base on flat, stable ground near a power outlet. Lawn or hard ground both work if level.
• Keep 0.5 m (1.6 ft) clear on each side and 1.8 m (5.9 ft) clear in front.
• A base off the main lawn can reach it by an app pathway. The robot can travel up to 60 m from the base and return.
• Keep the base within Wi-Fi range for initial setup.

The spare base listing includes a garage kit, a 10 m extension cable and a power adapter (TerraMow store). Check that each zone has an outlet within that cable's reach before you buy the second base. Setup time for a multi-base install is not published, and we have not timed one.

The case for the S1200 and S800

They carry TerraMow's highest slope rating at 20°, two degrees above the V-series. They need no perimeter wire and no RTK antenna. They offer standard, spot and multi-base modes, an IPX6 rating on robot and base, and a 3-year warranty on current listings. The S1200 adds chip and memory headroom for larger maps.

The case against

Both were sold out in every region on 2026-09-13, with no USD price published. Multi-base mode is now listed for the V-series, which removes the S-series' main point of difference. TerraMow does not state how multi-base mode interacts with the rated area. The 20° slope rating was revised down from 24°, and the 120-minute runtime is shorter than the V1000's 150 minutes.

TerraMow S1200 and S800 FAQ