Reviewing a cordless mower battery and specification sheet

How to Read a Cordless Mower Spec Sheet

ByKen

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If you want to know how to read a cordless mower spec sheet, start with the battery lines, then the height and deck lines, then the runtime claim. A cordless listing states the voltage and amp-hours of the battery, whether a battery and charger come in the box, the cutting height range, the deck size and sometimes the weight. The runtime figure is the manufacturer’s claim. This guide explains each line with the manufacturer pages we opened and shows which figures those pages leave out.

Quick answer

  • Check the battery line first: the voltage, the amp-hours per battery, and how many batteries come with the mower.
  • Read “Tool Only” and “Not Included” as the case where the mower comes without a battery or charger. The pages we opened use those words for the bare-tool entry.
  • Treat the runtime line as the manufacturer states it. Real runtime changes with grass, cutting height and terrain, and the runtime lines we opened often do not state the mowing conditions behind them.
  • Expect gaps. The pages we opened give no weight for one EGO model and no watt-hour figure for any model.

The lines a cordless spec sheet should give you

The table lists the common lines and an example from the pages we opened. Where a page does not give a line, the cell says “not stated.”

Spec line What it tells you Example from the pages we opened Source
Battery voltage The platform voltage of the battery pack DeWalt lists “Voltage” as 20V on the product table DeWalt XR push mower page
Battery amp-hours The capacity rating of each battery Ryobi lists “(2) 40V 6.0 Ah Battery”; DeWalt lists “(2) 20V MAX* 10.0 Ah Batteries” Ryobi 21in self-propelled page; DeWalt XR push mower page
Batteries included How many packs come in the box Ryobi: “With included (2) 6.0 Ah batteries”; DeWalt: “Total Number of Batteries” Ryobi CrossCut page; DeWalt XR push mower page
Charger included Whether a charger comes in the box DeWalt: “Charger Included”; EGO: “320W included” on the self-propelled kit DeWalt XR push mower page; EGO LM2110SP page
Cutting height range The lowest and highest cut, and how many settings there are Ryobi: “7 Position Single Point Height Adjustment”; EGO: “7-position cutting height adjustments: 1.25 to 4 inches” Ryobi 21in page; EGO LM2110SP page
Deck size The cutting width of the deck Ryobi CrossCut: “Deck Size 21″”; EGO: “21-inch deck” Ryobi CrossCut page; EGO LM2130 page
Weight Mower weight, usually in pounds Ryobi: “74 lbs.” and “75 lbs.”; EGO LM2130: not stated Ryobi pages; EGO LM2130 page
Runtime claim A manufacturer figure for one charge DeWalt: “Up to 100 minutes on runtime using both included batteries in succession” DeWalt XR push mower page
Charging time How long a charge takes EGO LM2130: “Approximately 60-minute charging time”; Ryobi and DeWalt: not stated EGO LM2130 page
Mowing modes Mulch, bag or side discharge Ryobi CrossCut: “Mulching, Bagging, or Side Discharge” Ryobi CrossCut page
Yard size guidance The size of lawn the maker suggests Ryobi CrossCut: “Up to 3/4 Acre”; EGO and DeWalt: not stated Ryobi CrossCut page

Read the table column by column. The left column is what the listing names, the middle column is what the line means, and the right column is the page where you can check it. If a line is missing from the page, that is a gap in the listing, not a zero.

Battery lines: volts, amp-hours and what is in the box

The battery lines decide what you can run on the mower. Start with the voltage, then the amp-hour rating, then the count and the kit contents. For a plain explanation of those two numbers, see the lawn mower battery voltage and amps post. The pages we opened name the battery platform in several ways, and the labels do not always match, so read each line on its own terms.

The DeWalt page is the clearest example of a line that needs a second look. Its product table gives a voltage of 20V and two batteries. Its footnote then reads: “Maximum initial battery voltage (measured without a workload) is 60 volts. Nominal voltage is 54.” A maximum of 60 volts and a nominal of 54 volts do not match the 20V label in the table. The page does not explain the difference, so write the question down and check it with the manufacturer or the owner’s manual before you assume the numbers agree.

The runtime footnote on the same DeWalt page adds a second mismatch. It says the figure is “Based on mowing one third of grass height, on height setting 6” and then names “60V MAX* DCB612 4.0Ah batteries in succession.” The kit itself includes 20V batteries rated at 10.0 Ah. The footnote therefore describes a different battery from the one in the box, and the page does not reconcile them.

A worked battery total

A cordless listing rarely gives the total capacity, so you can calculate it from the two lines on the page. Use the battery count and the amp-hour rating for each battery.

Mower kit Batteries included Amp-hours per battery Total (calculated) Source
Ryobi 21in CrossCut self-propelled 2 6.0 Ah 2 x 6.0 = 12.0 Ah Ryobi CrossCut page
DeWalt 21in XR push mower 2 10.0 Ah 2 x 10.0 = 20.0 Ah DeWalt XR push mower page
EGO 21in Select Cut kit 1 7.5 Ah 1 x 7.5 = 7.5 Ah EGO LM2130 page

Formula: total amp-hours = number of batteries x amp-hours per battery. The total is arithmetic on the listed figures, not a number the manufacturer states. Use it to compare kits with the same battery platform, and remember that the pages do not say how much cutting each amp-hour buys. For a broader look at battery voltage, see the lawn and garden battery voltage post.

Height, deck and weight: convert and check

Most of the height and deck lines are in inches, and most buyers think in centimeters or pounds for weight. The conversions below use 2.54 cm per inch and 0.4536 kg per pound. The results are rounded.

Listed figure Conversion Result Source
Lowest cut, 1.5 in 1.5 x 2.54 3.8 cm Ryobi 20in page: “Conveniently adjust the height of your cut between 1.5”
Highest cut, 4 in 4 x 2.54 10.2 cm Ryobi CrossCut page; EGO LM2130 page
21 in deck 21 x 2.54 53.3 cm Ryobi CrossCut page; EGO LM2130 page
75 lb mower 75 x 0.4536 34.0 kg Ryobi CrossCut page

The height and deck lines do not always agree within one listing. The Ryobi self-propelled page carries the title “40V HP BRUSHLESS 21″ SELF-PROPELLED MOWER,” but its Deck Size field reads “Deck Size 20″.” Confirm the deck size on the model you plan to buy, because a 20-inch and a 21-inch deck differ by about 2.5 cm in width.

The EGO LM2130 page is inconsistent in a different way. Its tech specs say “Eight cutting height positions, adjustable from 1 to 4 inches,” while its feature list says “Adjust deck height between 7 different height settings.” The page does not say which count is right, so count the settings on the mower itself when you can.

Weight is the line most often missing. The Ryobi pages list “74 lbs.” and “75 lbs.” for two different models, which are about 33.6 kg and 34.0 kg. The EGO LM2130 page gives no weight at all, and the DeWalt page does not list one in the lines we opened.

Runtime and charging claims

Runtime is the line most people read first, and it is the one the manufacturer controls. Every runtime figure in the table below is the manufacturer’s own claim, and the conditions differ from page to page. The real runtime changes with grass, cutting height and terrain, so use the figure to compare kits on the same platform, not to plan a mow to the minute.

Mower Battery in the claim Runtime claim as written Conditions stated on the page lines Source
DeWalt XR push mower Two 10.0 Ah batteries (footnote names a 60V DCB612 4.0Ah pack) Up to 100 minutes on runtime using both included batteries in succession Footnote: one third of grass height, height setting 6 DeWalt XR push mower page
EGO 21in Select Cut 7.5 Ah Up to 65 minutes of runtime on a single charge Mowing conditions not stated EGO LM2130 page
EGO 21in self-propelled 6.0 Ah Up to 50 minutes run time on a single charge Mowing conditions not stated EGO LM2110SP page
Ryobi 20in push mower 6Ah Up to 45 minutes of runtime using 40V 6Ah battery Mowing conditions not stated Ryobi 20in page

The EGO 21-inch Select Cut page also gives a charging time: “Approximately 60-minute charging time with the recommended 7.5Ah ARC Lithium battery and POWER+ Rapid Charger.” That figure applies to the recommended battery and charger named on the page. The Ryobi and DeWalt lines we opened do not give a charging time, so the cell for those models says “not stated.”

Tool only, kit and what is included

A tool-only entry means the mower comes without the battery and charger you need to run it. The pages we opened mark this in two ways. The Ryobi 20in product page offers a “Tool Only” choice next to “(1) 6Ah Battery/Charger.” The EGO pages list the tool-only version with “Not Included” in the battery and charger rows. The EGO self-propelled tool-only entry has the same two “Not Included” rows, and the kit rows above it show “6.0 Ah included” and “320W included.”

Check the kit line before you read any runtime or height figure. A kit and a tool-only mower can share a name, so the battery and charger rows decide what you actually receive. The Ryobi and EGO compatibility lines apply within each brand only. The Ryobi page says “Compatible with all RYOBI 40V tools and chargers,” and the EGO page says “Compatible with all EGO 56V ARC Lithium” batteries. Neither page says anything about another brand’s battery, so do not assume one.

The DeWalt page lists its kit contents in full: “(1) Grass Bag,” “(1) Mulch Plug,” the batteries and chargers. A complete list is the easiest kind of line to check, so when a page gives one, use it to confirm the kit before you compare any other figure.

Safety rules for batteries and chargers

A spec sheet can make a battery look like a plain number, but the safety rules attached to the battery and charger matter as much as the amp-hours. The Toro manual for a 60V battery push mower sets out the rule for the pack: “Use only the battery pack specified by Toro.” It also covers the charger: “Charge the battery pack with only the battery charger specified by Toro. A charger suitable for 1 type of battery pack may create a risk of fire when used with another battery pack.”

The same manual warns about the outlet: “Plugging the battery charger into an outlet that is not 120 V can cause a fire or electric shock.” The Toro battery and charging safety page adds two more rules: “Keep the battery clean and dry.” and “Do not dismantle or open the battery.” The Toro robotic-mower installation page sets the outlet rule for its power supply: “Plug the power supply into only a ground-fault circuit interrupter (GFCI) or residual-current device (RCD) receptacle with a tripping current not more than 30 mA.”

These are the manufacturer’s rules for Toro equipment. They are not a guide for other brands, and the pages we opened do not cover other brands’ chargers. Do not repair or open a battery to match a spec. If a battery or charger is damaged, the sources point to stopping and having the dealer replace it, not to repairing it yourself.

How we chose

We opened six manufacturer product pages on 2026-10-22: two Ryobi support pages for 21-inch 40V self-propelled models, one Ryobi product page for a 20-inch push mower, one DeWalt US product page for a 21-inch XR push mower, and two EGO US product pages for 21-inch models. Those pages were chosen because they give the spec lines directly, and no retail listing was used for any spec figure in this post.

For the safety section we added three Toro manual pages: the 60V battery push mower manual, the battery and charging station safety page, and the power supply installation page. Each one states its rule in its own words, and the quotes were checked word for word against the saved text. The table uses the product names printed on each page.

What we could not verify

  • Real runtime for any mower. The pages give manufacturer claims, and most of them do not state the conditions behind the figure.
  • What a volt means for cutting power beyond the label. The pages we opened name the voltage but do not explain its effect on the cut.
  • Watt-hours. None of the pages we opened gives a watt-hour figure for the battery. The EGO pages list a 320W charger, which is a charger rating and not a battery energy figure.
  • Whether the EGO models marked “Coming Soon” are available now. The page marks several entries that way, so check the current listing before you plan a purchase.
  • Cross-brand battery fit. The compatibility lines apply within one brand only.

What the spec sheet does not give

The pages we opened do not give a weight for the EGO LM2130 or the DeWalt XR push mower in the lines we read. They do not give watt-hours, and they do not give charging times for every model. Most runtime lines do not say what grass, height or terrain they assume, and the DeWalt footnote is the only one that does. The Ryobi 21in self-propelled page disagrees between its title and its deck size, so the listing does not settle the deck width on its own.

Some of these gaps are easy to fill from the owner’s manual for the exact model, and others need the manufacturer or a dealer. Where the page has no figure, this post does not supply one.

FAQ

What does “tool only” mean on a cordless mower listing?

It means the mower is sold without the battery and charger. The Ryobi 20in page offers a “Tool Only” choice next to a battery-and-charger option, and the EGO pages list “Not Included” for the battery and charger rows of the tool-only entry. Buy the battery and charger separately, and check that they match the platform the mower uses.

Is a higher amp-hour battery always better?

A higher amp-hour rating means more stored energy per battery, but the pages we opened do not say how that changes the cut or the weight. Compare batteries on the same platform, and read each runtime claim with its stated conditions. The DeWalt footnote shows that the battery named in a runtime claim may not be the battery in the box.

Why does my spec sheet show a different deck size than the title?

The Ryobi 21in self-propelled page shows “Deck Size 20″” in its spec block, while its title says 21 inch. The page does not explain the difference. Check the model number and the deck size on the box or the owner’s manual before you buy.

How many inches of cut height is the range?

It depends on the model. The Ryobi pages give a range of 1.5 to 4 inches. The EGO self-propelled page gives 1.25 to 4 inches across seven positions, and the EGO Select Cut page gives 1 to 4 inches. Read the range on the model you are considering, and convert it with 2.54 cm per inch if you need metric numbers.

Does a spec sheet tell me how long a charge takes?

Sometimes. The EGO Select Cut page gives an approximate 60-minute charging time with its recommended battery and rapid charger. The Ryobi and DeWalt lines we opened do not give a charging time, so check the manual or the manufacturer for those models.

Can I use another brand’s battery in a cordless mower?

The pages we opened say the compatibility applies within one brand. The Ryobi page states compatibility with “all RYOBI 40V tools and chargers,” and the EGO page states compatibility with “all EGO 56V ARC Lithium” batteries. Neither page makes a claim about another brand, so do not assume a cross-brand fit.

Bottom line

Decision rule: compare the battery count, the amp-hours and the charger line first, then confirm the height and deck, and treat any runtime figure as a manufacturer claim until its conditions are stated on the page.

Sources

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