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Generac GP6500 Portable Generator vs Champion 6500-Watt Inverter Generator

Buy the Champion if you need clean power for electronics, an RV outlet, or quiet operation at a campsite. Buy the Generac if you want maximum surge watts for starting big motors and a simple, proven conventional generator. The Champion is an inverter unit with lower THD, a TT-30R outlet, Economy Mode and a 64 dB rating, and it holds 4.9 out of 5 from 113 ratings. The Generac is a conventional generator with more peak watts and a larger tank, but it is louder and not inverter-clean.

  • Choose the Generac GP6500 if you are starting well pumps, air compressors or other large motors and want the extra surge capacity and a big steel tank.
  • Choose the Champion 6500-Watt Inverter if you power sensitive electronics, plug in an RV, or need quiet running at a campsite or tailgate.

Prices

  • Generac GP6500 Portable Generator: $849.00 at The Home Depot (last seen Nov 4)
  • Champion 6500-Watt Inverter Generator: $999.00 at Walmart (last seen Nov 8)
  • Difference: the Generac GP6500 Portable Generator is $150.00 cheaper than the Champion 6500-Watt Inverter Generator at the latest prices (Nov 4 and Nov 8)
Generac
Generac GP6500 Portable Generator 7680

Generac GP6500 Portable Generator

Generac GP6500 Portable Generator 7680

4.3(3 ratings)
$849.00at The Home DepotObserved Nov 4, 2026, 8:01 AM
See all prices and details
Visit The Home Depot
Pros
  • High surge watts for starting large motors
  • Electric start with recoil backup
  • Large steel fuel tank and fuel gauge
  • COsense carbon monoxide shutdown
  • Heavy-duty wheels and fold-down handle
Cons
  • Not an inverter, so power is not clean for sensitive electronics
  • Louder than inverter rivals
  • No RV TT-30R outlet
  • No economy mode, so it burns more fuel at light loads
Champion Power Equipment
Champion 6500-Watt RV Ready Portable Inverter Generator with Quiet Technology and CO Shield

Champion 6500-Watt Inverter Generator

Champion 6500-Watt RV Ready Portable Inverter Generator with Quiet Technology and CO Shield

4.9(113 ratings)
$999.00at WalmartObserved at 9:58 PM
See all prices and details
Visit Walmart
Pros
  • Clean inverter power under 3% THD
  • Quiet at 64 dB(A)
  • TT-30R RV outlet plus a 12V outlet
  • Economy Mode extends runtime and cuts wear
  • Intelligauge shows voltage, frequency and hours
Cons
  • Lower running watts than the Generac
  • Lower surge watts for big motors
  • Smaller fuel capacity than the Generac tank

What separates them

Generac GP6500 Portable GeneratorChampion 6500-Watt Inverter Generator
Power typeConventional generator, not inverterInverter generator with less than 3% THD clean power
Running watts6500 W running (8125 W starting per the listing)5000 W running, 6500 W starting
NoiseNot rated in the listing; conventional units of this size run loud64 dB(A) at 23 feet, about normal conversation
RuntimeAbout 11 hours at half loadUp to 18 hours at 25% load
OutletsL14-30R and 5-20R receptaclesTT-30R RV, L14-30R, two 5-20R duplex and a 12V outlet
StartingElectric start plus recoilEZ Start Dial
Fuel efficiency featuresNo auto idle controlEconomy Mode cuts engine speed to match load
Safety shutoffCOsense shuts the unit off when CO risesCO Shield shuts the unit off when CO rises

Price history

$999.00$849.00
Nov 3Nov 9
  • Generac GP6500 Portable Generator: lowest $849.00 on Nov 4 at The Home Depot.
  • Champion 6500-Watt Inverter Generator: lowest $999.00 on Nov 9 at Walmart.

Prices at every store

Generac GP6500 Portable Generator

  • The Home DepotNew

    Availability unknown

    $849.00Observed Nov 4, 2026, 8:01 AM
    Visit The Home Depot
  • AmazonNew

    Availability unknown

    As an Amazon Associate, Deal.ai earns from qualifying purchases.

    $999.00Observed Nov 4, 2026, 8:01 AM
    Visit Amazon

Also available at

  • Discount Building SupplyCheck price at Discount Building Supply
  • Main Street MowerCheck price at Main Street Mower
  • Tool MartCheck price at Tool Mart
All 2 stores and price history →

Champion 6500-Watt Inverter Generator

  • WalmartNew

    In stockSold by Champion Power Equipment, Inc.

    $999.00Free shippingObserved at 9:58 PM
    Visit Walmart
  • SuperGen ProductsNew

    In stock

    $999.00Observed at 9:58 PM
    Visit SuperGen Products
  • Acme ToolsNew

    In stock

    $1,015.00Free shippingObserved at 9:58 PM
    Visit Acme Tools
  • AmazonNew

    Availability unknown

    As an Amazon Associate, Deal.ai earns from qualifying purchases.

    $999.00Free shippingObserved at 9:56 PM
    Visit Amazon

Also available at

  • WalmartCheck price at Walmart
All 11 stores and price history →

Specs compared

SpecGenerac GP6500 Portable GeneratorChampion 6500-Watt Inverter Generator
Power SourceGasoline—
Power Output8.13 kilowatts—
Capacity6.9 gal tank—
Number Of Outlets4 outlets—
Inverter TechnologyNo—
Continuous Output7500.0 W—
RuntimeExtended run times, 11.0 hours (at 1/2 Load)—
Voltage120/240 V—
Peak Output9375.0 W—
Starting MethodElectric start—
Frequency60Hz—
ProtectionAutomatic Voltage Regulation, Overload Protecti…—
Show all 27 specsShow fewer specs
SpecGenerac GP6500 Portable GeneratorChampion 6500-Watt Inverter Generator
Fuel TypeGas, Gasoline—
Fuel Capacity8.0 gal—
Fuel GaugeYes, Incorporated fuel gauge—
Low Oil ShutdownYes, Automatically safeguards engine from damage—
Overload ProtectionYes—
Automatic Shut OffLow-oil level shutdown automatically safeguards…—
Connectivity PortsCovered outlets—
Receptacle TypeNEMA L14-30R, NEMA 5-20R—
Weight201.0 lbs. (Package Weight)—

What reviewers say

Champion 6500-Watt Inverter Generator

  • 4.9 / 5113 ratings

Reviewers give it high marks for quiet operation, easy starting, and reliable power for RVs and home backup. Some mention the weight and occasional CO Shield shutdowns as drawbacks.

What people mention
  • NoisePraisedOwners say it runs quietly, about as loud as a normal conversation.
  • StartingPraisedThe EZ Start Dial and electric start make it easy to start, even in cold weather.
  • Power qualityPraisedClean power with less than 3% THD safely runs sensitive electronics.
  • WeightCriticisedSome find it heavy and awkward to move, especially without help.

Questions and answers

Which is better for powering a laptop or phone charger?
The Champion. Its inverter output stays under 3% THD, which is safe for laptops, phones and medical devices. The Generac is a conventional generator and its power is not as clean.
Which handles a well pump or air compressor better?
The Generac. It has more starting and running watts, so it copes with large motor loads that would strain the Champion's 5000 running watts.
Which is quieter at a campsite?
The Champion. It is rated 64 dB(A) at 23 feet, about the level of normal conversation. The Generac is a conventional open-frame unit and runs noticeably louder.
Can I plug my RV into either one?
Only the Champion has a TT-30R RV outlet. The Generac has an L14-30R locking outlet, so you would need an adapter for a standard RV plug.
Which runs longer on a tank?
The Champion, up to 18 hours at 25% load with Economy Mode. The Generac runs about 11 hours at half load, though it carries a larger tank.
Is the Champion worth stepping up to over the Generac?
Yes if you need clean power, quiet running or an RV hookup. If your main job is starting big motors, the Generac's extra watts matter more than the inverter features.

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More comparisons

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Buying guides that pick them

  • Best 6500-watt generators for home backup power
Depth
27.25 (L)
—
Height25—
Width27—
Noise Level0.0 dB—
Auto Idle ControlNo—
color—Yellow