Champion 2500-Watt Dual Fuel Inverter vs Firman W01781
What is the difference?
The Champion 2500-Watt Dual Fuel Inverter has 1.85 kW of running power, 2.5 kW peak. The Firman W01781 has 1.7 kW of running power, 2.1 kW peak.
The Champion 2500-Watt Dual Fuel Inverter is dual-fuel, the Firman W01781 runs on gasoline.
The Champion 2500-Watt Dual Fuel Inverter has a 1 gal tank, the Firman W01781 has a 0.9 gal tank.
The Champion 2500-Watt Dual Fuel Inverter is rated at 53 dB, the Firman W01781 is rated at 59 dB. The Champion 2500-Watt Dual Fuel Inverter is quieter.
The Champion 2500-Watt Dual Fuel Inverter weighs 43 lb, the Firman W01781 weighs 46 lb. The Champion 2500-Watt Dual Fuel Inverter is easier to carry.
Both have a 3-year warranty.
Both have 120 V AC output.
The Champion 2500-Watt Dual Fuel Inverter can add extra batteries.
Specs side by side
| Champion 2500-Watt Dual Fuel Inverter | Firman W01781 | |
|---|---|---|
| Running W | 1850 | 1700 |
| Peak W | 2500 | 2100 |
| Fuel | dual-fuel | gasoline |
| Tank (gal) | 1 | 0.9 |
| Run time @50 % (h) | — | 9 |
| Noise (dB) | 53 | 59 |
| CO shutoff | yes | — |
| Weight (lb) | 43 | 46 |
| Warranty (yr) | 3 | 3 |
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Specs as read from manufacturer pages on 2026-10-26 / 2026-10-30. Specs one maker does not list are left out of the comparison. Sponsored links; we may earn a commission.
Common questions
Which has more running watts, Champion 2500-Watt Dual Fuel Inverter or Firman W01781?
The Champion 2500-Watt Dual Fuel Inverter. More running watts: 1850 W vs 1700 W.
Which is lighter, Champion 2500-Watt Dual Fuel Inverter or Firman W01781?
The Champion 2500-Watt Dual Fuel Inverter. Lighter: 43 lb vs 46 lb.
Which is quieter, Champion 2500-Watt Dual Fuel Inverter or Firman W01781?
The Champion 2500-Watt Dual Fuel Inverter. Quieter: 53 dB vs 59 dB.
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Compare other models → · All Champion models · All Firman models