Best Portable Generators · head-to-head

Champion 100302 vs Generac GP3000i

A sourced, side-by-side comparison. Generac GP3000i is cheaper at $799. Every spec and price links to its source.

Which is better: the Champion 100302 or Generac GP3000i?

The Generac GP3000i wins 1 of the 1 specs we compare head to head; the other wins 0.

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Full spec sheet

marks the stronger figure where "more" — or "less", for price and weight — is unambiguously better.

Spec Champion 100302 Generac GP3000i
US price $799
BrandChampion Power EquipmentGenerac
Released
Type inverter inverter
Running watts 3500 2300
Peak watts 4000 3000
Fuel gas gas
Runtime hours 17 5.8
Noise dba 64
Weight (lb) 81.6 59.5
Outlets 1×TT-30R (RV), 2×120V 20A (5-20R), 1×12V DC 1×120V 20A duplex (5-20R), 1×120V 30A (L5-30R), 2×5V USB
Release year

Sources — Champion 100302: norwall.com (verified 2026-06-19). Generac GP3000i: generatorbible.com (verified 2026-06-19).

What's the difference between the Champion 100302 and Generac GP3000i?

Where the two actually differ on the specs we track (5 of 8). Matching specs are omitted.

  • Running watts: Champion 100302 3500 vs Generac GP3000i 2300
  • Peak watts: Champion 100302 4000 vs Generac GP3000i 3000
  • Runtime hours: Champion 100302 17 vs Generac GP3000i 5.8
  • Weight (lb): Champion 100302 81.6 vs Generac GP3000i 59.5
  • Outlets: Champion 100302 1×TT-30R (RV), 2×120V 20A (5-20R), 1×12V DC vs Generac GP3000i 1×120V 20A duplex (5-20R), 1×120V 30A (L5-30R), 2×5V USB

What reviewers say

Sourced tester consensus for each — the "what people who used it think" layer, not just specs.

Champion 100302

No sourced tester review yet.

Generac GP3000i

Only one whitelisted tester, Outdoor Life, published genuine hands-on prose on the Generac GP3000i, naming it 'Best for RV Camping' in its 2026 inverter-generator roundup. The reviewer field-used the unit during a real multi-day outage, praising quiet operation, reliable pull-starting after long storage, and clean power safe for sensitive electronics, but flagged it as underpowered for home backup and cumbersome to carry with a full tank. All figures cited are manufacturer specs, not independent lab measurements. (1 sourced review.)

Praised: Reliable pull-start, even after months of storage (3-4 pulls); Quiet operation and clean power safe for sensitive electronics; Portable for one person; ran a chest freezer through a multi-day outage.

Flagged: Underpowered for home backup; Cumbersome to carry with a full tank; Pull-start only, more labor-intensive than electric ignition.

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