Champion 100889 4500W Dual Fuel Inverter Review
The iGen4500 formula plus propane capability, typically at a lower price.
The verdict
Champion's 4500-class inverter matches the Westinghouse on the numbers that matter — RV-AC-capable output, low-60s dBA quiet, electric start, RV outlet — and adds dual fuel, which no other value-priced inverter in this class offers. It's slightly louder and the display is more basic; for propane users it's the obvious pick.
Typical price: ~$799 (typical street price — current price shown on Amazon)
Buy on AmazonWhat we like
- +Only dual-fuel option at this price in the 4,500 class
- +Runs 13,500 BTU RV AC on gasoline (mind the ~10% propane derate)
- +Electric start; wheels and folding handle included
- +CO Shield shutoff standard
- +Usually undercuts the iGen4500 by $100–150
What to know
- −~61 dBA — quiet, but audibly busier than the iGen4500
- −Propane derate means marginal AC starting on LP in hot weather
- −Basic display vs. Westinghouse's data screen
- −No remote start fob
Full review
Dual fuel in an inverter is rarer than it should be, and it changes the ownership experience: propane doesn't varnish carburetors during the eight months a year the generator sits, and swapping a grill cylinder beats hunting for a gas can at midnight. Champion got there first at a sane price, and the 100889 has been a best-seller since.
Trade-offs against the iGen4500 are honest ones: a few dBA louder, simpler display, no remote fob. Output on gasoline is nearly identical in practice. If you'll run gasoline exclusively, the Westinghouse's refinement wins; if propane is your plan, this is the pick.
Best for: RVers and preppers who want inverter-clean power with propane's shelf-stable convenience.
Specifications
| Running watts | 3,500 (gas) / 3,150 (propane) |
|---|---|
| Peak watts | 4,500 (gas) / 4,050 (propane) |
| Fuel | Gasoline / propane (dual fuel) |
| Tank / runtime | 2.3 gal — ~14 hr eco @ 25% load |
| Noise | ~61 dBA |
| Outlets | TT-30R, 2× 5-20R, USB |
| Start | Electric, recoil |
| Weight | 105 lb |
| Warranty | 3 years |
Ready to get one?
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~$799 typical price
Buy on AmazonHead-to-head comparisons
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