How much does it cost to run a battery lawn mower?
A battery lawn mower costs about 5.4¢ per hour, 1.6¢ a day, $0.48 a month and $3 a year at typical use (1.5 hours a day, 1 days a week for 7 months a year) and the U.S. average rate of 17.99¢/kWh. Watts are charger draw. Recharging a 56 V 5 Ah battery takes about 0.35 kWh, so a season of weekly mowing uses roughly 15 kWh, about $2-3.
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Cost by setting
| Setting | Watts | Per hour | Per day | Per month | Per year |
|---|---|---|---|---|---|
| 40 V standard charger | 150 | 2.7¢ | 1.0¢ | $0.31 | $2 |
| 56 V rapid charger | 300 | 5.4¢ | 1.6¢ | $0.48 | $3 |
| Riding mower charging | 600 | 11¢ | 2.7¢ | $0.83 | $6 |
At 1.5 hours a day, 1 days a week for 7 months a year and 17.99¢/kWh.
Cost by hours of use
| Hours per day | kWh/day | Per day | Per month | Per year (all year) |
|---|---|---|---|---|
| 1 hour | 0.07 | 1.2¢ | $0.37 | $4 |
| 2 hours | 0.11 | 2.0¢ | $0.60 | $7 |
| 4 hours | 0.19 | 3.5¢ | $1.07 | $13 |
| 8 hours | 0.37 | 6.6¢ | $2.00 | $24 |
| 12 hours | 0.54 | 9.7¢ | $2.94 | $35 |
| 24 hours | 1.05 | 19¢ | $5.74 | $69 |
Cost to run a battery lawn mower in every state
The same battery lawn mower costs $2 a year in North Dakota and $8 in Hawaii, at each state's average residential rate (12 months ending July 2026).
| State | Rate | Per hour | Per month | Per year |
|---|---|---|---|---|
| North Dakota | 12.32¢ | 3.7¢ | $0.33 | $2 |
| Idaho | 12.65¢ | 3.8¢ | $0.34 | $2 |
| Nebraska | 12.86¢ | 3.9¢ | $0.34 | $2 |
| Louisiana | 12.99¢ | 3.9¢ | $0.35 | $2 |
| Utah | 13.32¢ | 4.0¢ | $0.36 | $2 |
| Nevada | 13.36¢ | 4.0¢ | $0.36 | $3 |
| Arkansas | 13.43¢ | 4.0¢ | $0.36 | $3 |
| Tennessee | 13.56¢ | 4.1¢ | $0.36 | $3 |
| Oklahoma | 13.70¢ | 4.1¢ | $0.37 | $3 |
| Montana | 13.84¢ | 4.2¢ | $0.37 | $3 |
| Kentucky | 13.92¢ | 4.2¢ | $0.37 | $3 |
| Missouri | 13.95¢ | 4.2¢ | $0.37 | $3 |
| Wyoming | 14.01¢ | 4.2¢ | $0.38 | $3 |
| Washington | 14.12¢ | 4.2¢ | $0.38 | $3 |
| Iowa | 14.13¢ | 4.2¢ | $0.38 | $3 |
| South Dakota | 14.20¢ | 4.3¢ | $0.38 | $3 |
| Mississippi | 14.77¢ | 4.4¢ | $0.40 | $3 |
| North Carolina | 14.77¢ | 4.4¢ | $0.40 | $3 |
| Kansas | 15.09¢ | 4.5¢ | $0.40 | $3 |
| Georgia | 15.12¢ | 4.5¢ | $0.41 | $3 |
| New Mexico | 15.32¢ | 4.6¢ | $0.41 | $3 |
| Florida | 15.39¢ | 4.6¢ | $0.41 | $3 |
| Arizona | 15.40¢ | 4.6¢ | $0.41 | $3 |
| West Virginia | 15.48¢ | 4.6¢ | $0.41 | $3 |
| Oregon | 15.50¢ | 4.7¢ | $0.42 | $3 |
| South Carolina | 15.64¢ | 4.7¢ | $0.42 | $3 |
| Texas | 15.96¢ | 4.8¢ | $0.43 | $3 |
| Minnesota | 16.22¢ | 4.9¢ | $0.43 | $3 |
| Alabama | 16.44¢ | 4.9¢ | $0.44 | $3 |
| Virginia | 16.48¢ | 4.9¢ | $0.44 | $3 |
| Colorado | 16.58¢ | 5.0¢ | $0.44 | $3 |
| Indiana | 16.94¢ | 5.1¢ | $0.45 | $3 |
| Delaware | 17.79¢ | 5.3¢ | $0.48 | $3 |
| Ohio | 18.25¢ | 5.5¢ | $0.49 | $3 |
| Wisconsin | 18.74¢ | 5.6¢ | $0.50 | $4 |
| Illinois | 18.79¢ | 5.6¢ | $0.50 | $4 |
| Pennsylvania | 20.70¢ | 6.2¢ | $0.55 | $4 |
| Maryland | 21.03¢ | 6.3¢ | $0.56 | $4 |
| Michigan | 21.05¢ | 6.3¢ | $0.56 | $4 |
| New Jersey | 23.78¢ | 7.1¢ | $0.64 | $4 |
| Vermont | 23.80¢ | 7.1¢ | $0.64 | $4 |
| District of Columbia | 24.20¢ | 7.3¢ | $0.65 | $5 |
| New Hampshire | 26.67¢ | 8.0¢ | $0.71 | $5 |
| Alaska | 26.85¢ | 8.1¢ | $0.72 | $5 |
| Connecticut | 27.99¢ | 8.4¢ | $0.75 | $5 |
| New York | 28.39¢ | 8.5¢ | $0.76 | $5 |
| Rhode Island | 29.27¢ | 8.8¢ | $0.78 | $5 |
| Maine | 29.31¢ | 8.8¢ | $0.79 | $5 |
| Massachusetts | 30.43¢ | 9.1¢ | $0.82 | $6 |
| California | 32.99¢ | 9.9¢ | $0.88 | $6 |
| Hawaii | 43.51¢ | 13¢ | $1.17 | $8 |
How to cut the cost
- Unplug the charger once batteries are full; many draw 1-3 W idle.
- Store batteries indoors at 40-60% charge over winter.
- Use eco/auto-torque mode to extend runtime per charge.
Cheaper ways to get the job done
Lets you mow on a single charging session instead of stopping.
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Compare with similar appliances
| Appliance | Watts | Typical use | Per month | Per year |
|---|---|---|---|---|
| Battery lawn mower | 300 | 1.5 hours a day, 1 days a week for 7 months a year | $0.48 | $3 |
| Electric lawn mower (corded) | 1,400 | 45 minutes a day, 1 days a week for 7 months a year | $0.82 | $6 |
| Robotic lawn mower | 30 | 8 hours a day for 7 months a year | $1.31 | $9 |
| String trimmer | 500 | 30 minutes a day, 1 days a week for 7 months a year | $0.20 | $1 |
| Leaf blower | 1,200 | 30 minutes a day, 1 days a week for 6 months a year | $0.47 | $3 |
| Hedge trimmer | 500 | 30 minutes a day, 1 days a week for 5 months a year | $0.20 | $1 |
| Pond pump | 100 | 24 hours a day for 7 months a year | $13.14 | $92 |
Head-to-head comparisons
Frequently asked questions
How much does it cost to run a battery lawn mower per hour?
A battery lawn mower drawing 300 watts uses 0.30 kWh per hour. At the U.S. average of 17.99¢/kWh that's 5.4¢ per hour. In North Dakota (12.32¢) it's 3.7¢. In Hawaii (43.51¢) it's 13¢.
How much does it cost to run a battery lawn mower per month?
At typical use (1.5 hours a day, 1 days a week for 7 months a year), a battery lawn mower costs about $0.48 a month while in use and $3 a year over the 7 months it's typically used, at the U.S. average rate. Enter your ZIP in the calculator above for your utility's rate.
How many watts does a battery lawn mower use?
Most battery lawn mowers use 100 to 600 watts, depending on the setting (40 v standard charger 150 W, 56 v rapid charger 300 W, riding mower charging 600 W). Plugged in but off, it still draws about 1 W of standby power. Check the label on the back or bottom for your model's exact rating.
How many kWh does a battery lawn mower use?
About 0.09 kWh a day and 19 kWh a year at typical use (1.5 hours a day, 1 days a week for 7 months a year).
Does a battery lawn mower use a lot of electricity?
No. At about 19 kWh a year it's a small share (0.2%) of the average U.S. home's 10,492 kWh.
Is it cheaper to run a battery lawn mower or an electric lawn mower (corded)?
At typical use, a battery lawn mower costs about $3 a year versus $6 for an electric lawn mower (corded). So the battery lawn mower is cheaper by about $2 a year. Use the comparison table above to compare them at your own settings.
How can I lower the cost of running a battery lawn mower?
- Unplug the charger once batteries are full; many draw 1-3 W idle.
- Store batteries indoors at 40-60% charge over winter.
- Use eco/auto-torque mode to extend runtime per charge.
Rates updated 2026-10-21: EIA data through July 2026. Typical wattage and usage reviewed against DOE, ENERGY STAR and manufacturer specs. Methodology.