Our take
BLACK+DECKER CM1640 is a 16-inch cordless mower documented for the 40V Max lithium family, with a nominal 36V system, six cut-height positions, a rear collection bag, and a folding handle. Its narrower deck can be useful when comparing compact routes. The manual does not publish a comparable runtime or the numerical height endpoints in the material reviewed here. The source row advertises an extra LBX2040 battery, but that exact offer and battery count are not maker-verified. Treat the base mower and the marketplace bundle as separate questions.
A buyer considering a narrower 36V-nominal BLACK+DECKER cordless mower who will verify exact kit contents and battery condition..
Choose another model if you need a maker-stated runtime, a verified extra-battery count, a specific minimum or maximum cut height, or confirmed side discharge.
Pros & cons
What could work for you, and what to consider before buying.
What works in its favor
- The exact BLACK+DECKER manual identifies CM1640 as a 40V Max lithium cordless mower.
- The manual documents six height positions, a rear collection bag, and a handle that folds for storage.
- The maker lists a 16-inch width and an approximate 48-pound weight for CM1640.
What to weigh up
- The reviewed manual does not give the numerical cut-height endpoints.
- No exact-model runtime figure was established in the maker sources reviewed.
- The historical row's additional LBX2040 battery and exact package remain unverified.
Specifications and exact model details
The key details
| Model covered | CM1640 |
|---|---|
| Cutting width | 16-inch cordless mower; 40V Max initial voltage and 36V nominal system |
| Drive and battery platform | Six cut-height positions; numerical endpoints are not stated in the reviewed manual |
| Battery and charger configuration | Rear collection bag and folding handle are documented |
| Cutting and collection | Exact listing's extra LBX2040 battery, battery count, and package condition need seller verification |
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
A narrower cordless width for route planning
BLACK+DECKER's ServiceNet listing identifies CM1640 as a 16-inch cordless mower. That provides a clear width for comparing narrow gates and shorter runs with wider 20- and 21-inch models. It is not the same as the mower's full outside dimensions, so check storage and passage measurements when those are tight. The manufacturer's support page lists an approximate 48-pound weight. This review does not interpret that number as light or heavy for every operator, and it does not predict how quickly the mower will cut a lawn.
Battery voltage and exact kit contents
The instruction manual describes a lithium cordless mower for BLACK+DECKER LB-series batteries, with a maximum initial voltage of 40 volts and a nominal voltage of 36. This identifies the platform; it is not a direct performance comparison with another battery voltage. The manual refers to a charger supplied with the product and identifies compatible battery packs, but it does not establish the source row's extra LBX2040 battery or the exact number and condition in a current seller package. Verify those details before treating it as a complete multi-battery kit.
Six settings without published height endpoints
The CM1640 manual states that the mower has six cutting-height positions, but the reviewed manufacturer material does not provide the lowest and highest heights in inches. The profile therefore records six positions and keeps both range endpoints unknown. If a professional requirement depends on reaching a particular height, do not infer the answer from another BLACK+DECKER mower or a compatible replacement part. The adjustment count still gives useful evidence for a buyer who values several settings, while a hard minimum- or maximum-height filter needs a verified numerical range.
Rear collection is documented; other modes are not
The manual identifies a grass collection bag and warns against operating the mower without it attached. It also includes a full-bag indicator in the functional description. The maker sources reviewed do not establish the bag's bushel capacity, side-discharge operation, or a mulching setup for this exact model. Those remain unknown rather than being borrowed from a different cordless mower. If collection is important, compare the documented bag function and ask the seller for the exact bag and frame; if you require side discharge, use a model with that mode explicitly supported.
Folding storage is useful, while runtime stays open
BLACK+DECKER explains how the CM1640 handle folds down for storage and gives instructions for carrying the mower by its handle. That is practical information for a buyer comparing garage space and transport. The manual does not publish a maximum runtime, acreage per charge, or a measured noise level, so this review makes no runtime promise. The listing's extra-battery claim may affect charging plans, but model documentation cannot verify that seller-specific addition. Confirm the seller's package and battery state, and keep a compatible charger and pack in the expected condition.
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Before you buy
What battery platform does CM1640 use?
The maker manual lists BLACK+DECKER LB-series 36V or 40V Max lithium batteries; it describes 40V as maximum initial voltage and 36V as nominal.
How many cutting-height positions does CM1640 have?
The manual documents six positions but the reviewed material does not state the numerical minimum and maximum heights.
Does the row's offer include an extra LBX2040 battery?
The historical title claims an extra battery, but the exact seller bundle was not verified by the manufacturer sources reviewed.
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.
- BLACK+DECKER CM1640 40V Max lithium mower instruction manual ↗ — checked October 16, 2026.
- BLACK+DECKER ServiceNet exact CM1640 instruction manual ↗ — checked October 16, 2026.
- BLACK+DECKER ServiceNet part compatibility record identifying CM1640 as a cordless mower 16 in ↗ — checked October 16, 2026.
- BLACK+DECKER support list of approximate mower weights, including CM1640 ↗ — checked October 16, 2026.
Is it the right fit?
Check the exact model and today’s offers on Amazon.