How Many kWh Does a Cordless Power Tool Charger Use?
Cordless Power Tool Charger energy cost calculator — see your exact daily, monthly, and yearly electricity cost.
US national average. Edit for your local rate.
Daily Energy Use
0.10
kWh / day
Monthly Cost
$0.56
Yearly Cost
$6.87
Cordless Power Tool Charger — Cost Breakdown
| Period | kWh Used | Cost ($) |
|---|---|---|
| Per Hour | 0.1000 | $0.0188 |
| Per Day | 0.10 | $0.02 |
| Per Month (30 days) | 3.00 | $0.56 |
| Per Year (365 days) | 36.50 | $6.87 |
Charging a power tool battery uses about the same energy as running an LED bulb for 10 hours.
3 Ways to Cut Your Cordless Power Tool Charger Energy Bill
- 🌱
Remove batteries from the charger once fully charged — chargers draw 5–15W in maintenance/trickle mode.
- 💡
Charge batteries at room temperature for maximum efficiency — extreme temps reduce charge efficiency by up to 20%.
- ⚡
Store batteries at 40–60% charge if not using for extended periods — this extends lifespan and reduces wasted charging cycles.
Power tool chargers are solid-state devices drawing consistent wattage throughout the charge cycle with no motor or surge.