What size generator do i need for power tools?
Check, uncheck or adjust the typical device list below — watts, startup surge and battery size update instantly. Numbers come from U.S. DOE, ENERGY STAR and manufacturer spec sheets, not marketing copy.
1. Check what you need to power
Refrigeration & Freezers
Kitchen
Heating, Cooling & Fans
Water & Pumps
Laundry & Cleaning
Electronics & Office
- 1
Medical Devices
Power Tools & Outdoor
- 1
- 1
Lighting
- 4
2. Your sizing
3. Best cross-brand matches
- Bluetti AC200L
- surge 7,200W covers your 3,612W start peak
- 1.5 days of your typical daily use (2,048Wh / 1,393Wh)
- EcoFlow DELTA 3 Max~$899
- surge 4,800W covers your 3,612W start peak
- 1.5 days of your typical daily use (2,048Wh / 1,393Wh)
- EcoFlow DELTA 3 Max Plus~$1,149
- surge 6,000W covers your 3,612W start peak
- 1.5 days of your typical daily use (2,048Wh / 1,393Wh)
Static answer (crawlable summary)
Typical device list: Circular Saw (7-1/4 inch)×1, Drill (1/2 inch)×1, LED Bulb (100W equivalent)×4, Phone / Smartphone Charger×2, Laptop Computer×1.
| Continuous load | 1,812 W |
|---|---|
| Startup peak | 3,612 W (driven by 1× Circular Saw (7-1/4 inch)) |
| Daily energy use | 1,393 Wh |
| Recommended capacity | 1,750 Wh (25% margin included) |
| Minimum inverter | 2,000 W continuous |
Frequently asked questions
What size generator do i need for power tools?
For a typical setup (circular saw (7-1/4 inch), drill (1/2 inch), led bulb (100w equivalent), phone / smartphone charger and laptop computer), you need at least 1,812W of continuous power. The single biggest moment is startup: when 1× circular saw (7-1/4 inch) kicks on, the momentary draw peaks at 3,612W. For overnight runtime we recommend at least 1,750Wh of battery capacity (your devices use about 1,393Wh per day, plus a 25% margin).
Which power stations can handle this?
Based on published specs, Bluetti AC200L, EcoFlow DELTA 3 Max, EcoFlow DELTA 3 Max Plus all cover the 3,612W startup peak and give you 1.5 days / 1.5 days / 1.5 days of typical daily use. Check the comparison cards above for the full numbers.
Why is the startup surge higher than the running watts?
Motor-driven devices (fridge compressors, well pumps, air conditioners) draw 2-5× their running power for a split second at startup — measured as locked-rotor amps (LRA). A generator that only meets the running load will trip or stall when the biggest motor starts. Our data sources: U.S. DOE Energy Saver, ENERGY STAR certified product database, and manufacturer spec sheets (Franklin Electric, Goodman, Zoeller).