Our take
Greenworks' official product route for SKU 2500402 labels the 80 V, 21-inch brushless push mower LMB401. Its compatibility table separately cross-references that SKU to GLM801601, so both labels are retained rather than silently normalized. The page lists two 2.0 Ah batteries, a rapid charger, seven height positions from 1.375 to 3.75 inches, and mulch, bag, and side-discharge modes. It claims up to 40 minutes with the two batteries. The grass-catcher capacity row contains an invalid watt unit and is left unknown. This review uses maker documentation only, not a cutting test.
A buyer who wants a 21-inch push mower on Greenworks' 80 V platform and can verify the exact package and model label..
Avoid it if a clean single model label or a verified bag capacity is essential, or if you need a self-propelled mower.
Pros & cons
What could work for you, and what to consider before buying.
What works in its favor
- Greenworks identifies SKU 2500402 and its product table cross-references it to GLM801601.
- The manufacturer lists two 80 V 2.0 Ah batteries and a rapid charger in the kit.
- Seven heights, three clipping modes, folding storage, and a 40-minute maximum claim are documented.
What to weigh up
- The product page uses LMB401 while the compatibility record says GLM801601, so the naming difference must remain visible.
- The maker's grass-catcher capacity field says 1500W, an invalid capacity unit, and cannot support a bag-volume match.
- The mower is push-only; no self-propelled drive is documented.
Specifications and exact model details
The key details
| Model covered | GLM801601 / LMB401 |
|---|---|
| Cutting width | 21 in cutting width |
| Drive and battery platform | Push; Greenworks Pro 80 V platform |
| Battery and charger configuration | Two 80 V 2.0 Ah batteries and rapid charger listed |
| Cutting and collection | Mulch, bag, or side discharge; bag capacity not reliably stated |
Performance figures are manufacturer claims. Source checked October 16, 2026. Regional models and included accessories can differ.
Full review: how the features affect your choice
What the features mean for you
Keep both Greenworks model labels visible
The official page is at the GLM801601 product route but labels SKU 2500402 as LMB401. Greenworks' blade compatibility table independently lists SKU 2500402 and GLM801601 together. This supports the mower identity while preserving a source-level naming conflict. A buyer should compare the seller's model plate, SKU, and kit contents rather than assume every listing using one of the two labels is identical. The ambiguity is editorially important even though the 21-inch mower family is confirmed.
A two-battery 80 V kit
Greenworks lists two removable 80 V 2.0 Ah batteries and a rapid charger with the 2500402 kit. The maker describes the system as its Pro 80 V platform, which is distinct from Greenworks 40 V packs and other brands' systems. This gives a buyer a clear package to compare when starting without compatible batteries. The manufacturer calls the charger rapid; the current seller's exact bundle and battery condition still need checking.
A push mower with a 21-inch cutting width
The product page identifies a 21-inch push mower with a brushless motor. It is therefore a candidate for a wide-deck requirement but not for a hard self-propelled requirement. Its 80 V label is a platform fact, not a direct comparison of power or cut quality against 40 V and 56 V models. Buyers should weigh drive style alongside width because they answer different questions: who moves the mower forward and how broad each cutting path is.
Height and clipping choices are documented
Greenworks lists seven cutting-height positions from 1.375 to 3.75 inches and a 3-in-1 arrangement for mulching, bagging, or side discharge. That gives the buyer useful evidence for width, height, and side-discharge filters. The page does not provide a valid bushel value for the bag: its capacity line reads 1500W. We therefore leave bag capacity unknown instead of translating an apparent data error into a number. Check accessory fit before buying.
Runtime is a maximum claim, not a promise
Greenworks states up to 40 minutes with the included pair of batteries and describes folding handles and vertical storage. The area estimate is stated as up to three-quarters of an acre, but it is not converted or used to guarantee coverage for a specific property. Runtime changes with work conditions, and the listing does not establish how long a used battery set will perform. Confirm both 2.0 Ah packs, charger, condition, and model marking on the seller's exact offer.
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Before you buy
Is GLM801601 the same label shown on the product page?
Greenworks labels SKU 2500402 as LMB401 on the product page, while its compatibility table maps SKU 2500402 to GLM801601. The review preserves both labels.
How many batteries are in the documented kit?
The official product page lists two 80 V 2.0 Ah batteries and a rapid charger. Verify the exact seller package and battery condition.
How large is the grass catcher?
The maker page's capacity row uses the unit 1500W, which is not a bag-volume measure. We leave capacity unknown.
Where can I check the current price?
Use the Amazon link for current offers. Check the exact model, seller, product condition, delivery, and return terms. This page does not display a live price or confirm stock.
Sources and review basis
Sources & review basis
We use the linked product documentation for the features above. Our suitability notes and buying advice are editorial judgments based on those features, not measured performance results.
- Greenworks SKU 2500402 product page, with model cross-reference ↗ — checked October 16, 2026.
- Greenworks SKU 2500402 product page, labelled LMB401 ↗ — checked October 16, 2026.
- Greenworks 21-inch blade compatibility table ↗ — checked October 16, 2026.
Is it the right fit?
Check the exact model and today’s offers on Amazon.