Champion 2500W Ultralight Inverter
#4 in SmallFull review
A light, quiet gas inverter for camping, tailgating and running a fridge and lights in an outage. Pick the dual-fuel 2500W instead if you want propane.
Amazon $518.25$518.25
3.5/5
A budget carry-handle inverter for camping and light outage duty that still includes CO shutoff and a three-year warranty. Good value if you only need gasoline.
- 1,800 / 2,200 WRunning / starting
- GasolineFuel
- 8 hr at 25% loadRun time
- 58 dBA at light loadNoise
- 41.9 lbWeight
- $0.19Price / W
Check price at Amazon$349.99
Price checked October 22, 2026. As an Amazon Associate we earn from qualifying purchases.
Pros
- Light enough at about 42 lb to carry to a campsite with one hand
- Shuts itself off if carbon monoxide builds up
- Parallel-ready to pair with a second GENMAX unit
- Three-year warranty at a budget price
Cons
- Gasoline only and no wheels
- Not CARB compliant, so not sold new in California
- GENMAX’s own runtime figures conflict (8 vs 10.5 hours at quarter load)
How it scores
The rating comes from 7 measured or published factors, each scored 0-100 against fixed reference points for its size. How we rank explains each one.
Specifications
| Model number | GM2200i |
|---|---|
| Output | |
| Gasoline | 1,800 W running, 2,200 W starting |
| Outlets | 2 × 120 V, USB |
| Parallel capable | Yes |
| Total harmonic distortion | under 3% |
| Price per watt | $0.19 |
| Fuel and run time | |
| Fuel | Gasoline |
| Tank | 1.1 gal |
| Run time (gasoline) | 8 hr at 25% load |
| Engine | 79.7 cc |
| Noise and safety | |
| Rated noise (light load) | 58 dBA |
| CO shutoff | Yes |
| CARB compliant | No |
| Build | |
| Starting | Recoil (pull) |
| App | No |
| Wheels | No |
| Dimensions | 18.9 x 11.4 x 17.3 in |
| Weight | 41.9 lb |
| Warranty | 3 years |
Alternatives in this size
Generac GP2500i
#5 in SmallFull review
A small, easy-to-carry inverter for camping, tailgating and keeping a fridge and phones running in an outage. Buyers who want an RV outlet or electric start should look one size up.
Amazon $596.80$596.80
A-iPower SUA2301iD
#7 in SmallFull review
A budget dual-fuel camping and RV inverter with wheels and automatic fuel switchover. A good pick if propane backup matters more than published specs.
Amazon $418.49$418.49
Compare
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