Champion 3500-Watt Inverter (100571)

Champion's name for this one is peak watts, not running watts — know the difference before you buy.

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Specs

Running watts	2,300 W
Starting watts	3,500 W
Type	Inverter
Fuel	Gasoline
Weight	57.8 lb
Noise (mfr figure)	58 dBA
Fuel tank	1.2 gal
Runtime (mfr claim)	up to ~10 h at 25% load
Outlets	20A 125V duplex (5-20R), 12V automotive-style, Dual USB
Start	Recoil
Parallel capable	Yes
CO safety shutoff	Yes — built-in CO sensor
Typical street price	~$699 (as of July 2026 — check listing for current price)

Figures are the manufacturer's published specs; dashes mean the maker doesn't publish a number. Verify against the current datasheet before you buy.

What can it actually run?

Checked with the same math as our calculator: total running watts, plus the single largest motor surge on top. “Tight” means it technically fits but the load sits above 80% of rated output — fine briefly, not where you want to live.

Fridge, Wi-Fi, and lights
730 W running · 2,230 W peak
✓ runs it
Storm essentials (fridge, freezer, furnace fan, sump pump)
3,080 W running · 4,630 W peak
✗ too much
Essentials plus a 10,000 BTU window AC
4,280 W running · 6,680 W peak
✗ too much
Most of the house (well pump, central AC, laundry)
13,680 W running · 19,680 W peak
✗ too much

The installer's take

The '3500' in the name is the surge figure; 2,300W running is the number that actually matters for sizing, and it puts this closer to the small-inverter class above than the 3,000W-running Predator below despite the similar-sounding name. That's not a knock on the hardware — 57.8 lb, 58 dBA, CO Shield, and parallel capability are all solid for the class — just a reminder to size off running watts, not the number on the box. Champion has since discontinued this specific model, so parts availability will thin out over time; buy it for what it does today; don't count on decades of support.

Pros

57.8 lb — genuinely light for 2,300W running
58 dBA and CO Shield shutoff standard
Parallel-capable if you outgrow one unit

Cons

Named after its 3,500W surge, not its 2,300W running rating — read past the headline number
Discontinued by Champion, so long-term parts support is a question mark

Best for: Campers and light backup buyers who've already checked the running-watts number, not just the name.

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Compare it

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