Champion 3650-Watt RV Ready
#9 in SmallFull review
A low-cost gas generator sized for a 30 A RV or a few essentials in an outage. Best for campers who want the RV outlets and CO shutoff for the least money.
Amazon $469.99$469.99
3.4/5
A small gasoline generator for a fridge, a freezer, lights and a sump pump in an outage, or tools on a job site. Pick it for low cost and easy handling, not for whole-house backup.
- 3,600 / 4,500 WRunning / starting
- GasolineFuel
- 9.3 hr at 50% loadRun time
- 120 V only (L5-30)Transfer switch
- 105 lbWeight
- $0.15Price / W
Check price at Amazon$549
Price checked October 28, 2026. As an Amazon Associate we earn from qualifying purchases.
Pros
- Small and light enough for one person to wheel around and store
- Shuts itself off if carbon monoxide builds up nearby
- L5-30R outlet feeds a 120 V inlet box or a 30 A RV adapter
- Runs about 9 hours on a tank at half load
Cons
- No 240 V outlet, so it cannot run a well pump or a 240 V transfer switch
- Pull start only
- Not sold in California in this version
The Generac GP COsense family
Every Generac GP COsense model we rank, smallest first. Ratings compare each against its own size.
| Model | Running / starting | Rating | Price |
|---|---|---|---|
| Generac GP3600 (this one) | 3,600 / 4,500 W | 3.4/5 | $549 |
| Generac GP6500E | 6,500 / 8,125 W | 4.0/5 | $899 |
| Generac GP8000E | 8,000 / 10,000 W | 3.9/5 | $1,049 |
| Generac GP8000E EFI | 8,000 / 10,000 W | 3.9/5 | $1,299 |
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 | GP3600 COsense 49ST/CSA (G0077212) |
|---|---|
| Output | |
| Gasoline | 3,600 W running, 4,500 W starting |
| Outlets | 4 × 120 V, L5-30 |
| Transfer switch ready | 120 V only (L5-30) |
| Full power at 120 V | No |
| Price per watt | $0.15 |
| Fuel and run time | |
| Fuel | Gasoline |
| Tank | 3.7 gal |
| Run time (gasoline) | 9.3 hr at 50% load |
| Engine | 212 cc |
| Noise and safety | |
| CO shutoff | Yes |
| CARB compliant | No |
| Build | |
| Starting | Recoil (pull) |
| Wheels | Yes |
| Dimensions | 24 x 22.5 x 21.3 in |
| Weight | 105 lb |
| Warranty | 3 years |
| Released | 2023-12 |
Alternatives in this size
Westinghouse WGen3600cv
#10 in SmallFull review
A low-cost gasoline generator for a travel trailer or a few essentials in an outage. Best for RV owners and light home backup where a 120 V outlet is enough.
Amazon $349$349
WEN GN5600
#11 in SmallFull review
A cheap small gas generator for keeping essentials or an RV going in an outage, if you can live without CO shutoff and electric start.
Amazon $376$376
Compare
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