How much does it cost to charge a cordless drill, leaf blower, lawnmower, or other cordless battery-powered tool? Use our calculator to find out instantly:
Battery Charging Cost Calculator
at 0.245 £/kWh
(0.0074 kWh used)
How to Use Our Cordless Tool Charging Cost Calculator
Our charging cost calculator helps you determine the exact cost of recharging your cordless power tools, making it easier to manage your workshop expenses and estimate project costs. Here’s how to use it effectively:
- First, identify your tool’s battery capacity, which is typically printed on the battery pack or in the user manual. Battery capacity is measured in milliamp-hours (mAh) or amp-hours (Ah) – for example, a battery might be labeled as “5,000 mAh” or “5.0 Ah” (these values are equivalent). Select this value from the dropdown menu in the calculator.
- Next, you’ll need to enter your electricity rate. In the UK, this is measured in pounds per kilowatt-hour (£/kWh). You can find your rate on your latest electricity bill or online account. Enter this value in the calculator – for example, 0.34 for 34 pence per kilowatt-hour.
- Use the “Number of Charges” dropdown to calculate costs for multiple charging cycles. This is useful for working out daily, weekly, or batch charging costs. Simply select from 2-5 charges to instantly see the total cost for multiple recharges.
The calculator instantly shows you the cost of a full charge, taking into account:
- The battery’s nominal voltage (3.7V for lithium-ion cells)
- Typical charging efficiency losses (set at 85%)
- Your current electricity rates
The results display shows three key pieces of information:
- The total cost to charge your battery from empty to full
- The battery capacity you selected
- The actual energy consumed during charging in kilowatt-hours
For the most accurate results, ensure you’re using your current electricity rate, as these can vary significantly between providers and seasons. Remember that this calculator assumes a completely discharged battery – if you’re only topping up a partially discharged battery, the actual cost will be lower.
You can use this power tool charging calculator to find out how much it costs to charge a battery in 2025. It supports all brands, including Makita, DEWALT, Bosch, Milwaukee Tool, Ryobi, Stanley, Black and Decker, Hilti, Craftsman, Stihl, and more.
Annual Charging Costs For Common Cordless Tools
Lawnmower (6.0Ah battery)
- Average suburban garden: 30 charges per season (March-October)
- Cost per charge: £0.0127
- Annual charging cost: £0.38
- Typical use: Weekly mowing during growing season
Hedge Trimmer (4.0Ah battery)
- Typical usage: 20 charges per year
- Cost per charge: £0.0085
- Annual charging cost: £0.17
- Typical use: Monthly during growing season, intensive use in spring/autumn
Leaf Blower (4.0Ah battery)
- Typical usage: 25 charges per year
- Cost per charge: £0.0085
- Annual charging cost: £0.21
- Typical use: Weekly in autumn, occasional use year-round
DIY Power Drill (2.0Ah battery)
- Typical usage: 50 charges per year
- Cost per charge: £0.0042
- Annual charging cost: £0.21
- Typical use: Regular weekend DIY projects
Professional Gardener Scenario
- Daily use of multiple tools
- Lawnmower: 100 charges (£1.27)
- Hedge trimmer: 80 charges (£0.68)
- Leaf blower: 90 charges (£0.77)
- Total annual charging cost: £2.72
Occasional Home Gardener Scenario
- Lawnmower: 15 charges (£0.19)
- Hedge trimmer: 10 charges (£0.09)
- Leaf blower: 12 charges (£0.10)
- Total annual charging cost: £0.38
This data assumes a price cap of 24.5p/kWh and full discharge cycles. Actual costs may vary based on usage patterns and specific models.
Interesting fact: A professional gardener using cordless tools all day, every day, still spends less than £3 per year on battery charging costs!
FAQs
How much does it cost to charge a drill?
For a typical cordless drill (2.0Ah/2000mAh battery) at the UK price cap rate (24.5p/kWh): Costs approximately £0.0042 per full charge. Most drills can run for 1-2 hours of continuous use per charge.
How much does it cost to charge a leaf blower?
For a cordless leaf blower (4.0Ah/4000mAh battery): A complete charge costs around £0.0085. Powerful enough for about 30 minutes of leaf clearing before needing a recharge.
How much does it cost to charge a pressure washer?
For a cordless pressure washer (5.0Ah/5000mAh battery): Each charging cycle comes to roughly £0.0106. Generally provides 20-30 minutes of washing time at medium pressure settings.
How much does it cost to charge a lawnmower?
For a cordless lawnmower (6.0Ah/6000mAh battery): Full charge costs approximately £0.0127. Sufficient for mowing around 250-300 square meters of lawn under normal conditions.
How much does it cost to charge a chainsaw?
For a cordless chainsaw (8.0Ah/8000mAh battery): Charging cost works out to £0.0170 per full cycle. Typically delivers 45-60 minutes of cutting time for moderate tree work.
Trust note
This tool is provided for free. You are welcome to bookmark this page and return whenever you want to do a quick calculation.