Calculate your cost
Start with the example below, then replace the wattage, daily runtime, and rate with the numbers for your e-bike charger.
This setup uses about 12 kWh in a 30-day month.
Please enter valid values within the ranges shown.
| Schedule | Hours/day | Cost/month |
|---|---|---|
| Half runtime | 2 | $1.13 |
| Page example | 4 | $2.26 |
| Longer runtime | 6 | $3.39 |
Same 100-watt input and 18.83¢/kWh rate; only runtime changes.
Formula for the page example
0.1 kW × 4 hr × $0.1883 = $0.08 per day
Convert watts to kilowatts, multiply by the active hours used each day, then multiply by the electricity price in dollars per kWh. Multiply the daily result by 30 for the monthly estimate shown above.
How to read this estimate
Electric bikes are highly efficient. Their chargers sip power slowly over several hours, keeping transportation costs near zero.
Use this as a baseline until you can check the label or measure the e-bike charger directly. Model, settings, condition, climate, and household routine can all change the result.
What changes the cost?
- 01
Battery size (watt-hours)
- 02
Frequency of riding
- 03
Rider assist level used
Ways to spend less
- Charge the battery only when it drops below 20%.
- Pedal more on flat stretches to preserve the battery.
- Do not leave the charger plugged into the wall when not in use.