Generac · Portable generator · GP6500E COsense 49ST/CSA
GP6500E COsense 49ST/CSA delivers up to 6,500 running watts and 8,125 starting watts from a portable gasoline system.
Infographic gallery
6,500W rated output
The comparison uses Generac’s published rated and peak, surge, or maximum output figures.
Energy source
Gasoline
Published runtime guidance
11.5 hours at 50% load on the primary listed fuel
182 lb
Listed weight
27.2 × 27 × 26.5 in
Dimensions
Charging or integration
Fueling and starting per Generac instructions; manual transfer equipment sold separately
Backup transfer
Not an automatic standby system; approved manual transfer equipment is required for home connection
Noise
No official dBA figure listed on the model page
Official product gallery
The current official image set for GP6500E COsense 49ST/CSA includes product views, connection diagrams, feature explanations, and compatible system configurations where Generac publishes them.
Complete specifications
These pages retain Generac's model-specific output, charging, battery, port, continuity, dimensions, environmental, engine, fuel, app-control, and warranty fields where published.
System capability
GP6500E COsense 49ST/CSA delivers up to 6,500 running watts and 8,125 starting watts from a portable gasoline system.
Power delivery
6,500-watt Portable Generator with COSENSE® Technology.
Safety and controls
Generac's GP6500 portable generator with COSENSE® Technology provides lots of power while protecting you and your home from carbon monoxide (CO) poisoning.
Runtime and fueling
If you inadvertently use the GP6500 indoors or in an enclosed space, COSENSE® WILL automatically shut off your unit when increased CO is detected.
Portability detail
This unit also offers PowerRush™ Advanced Technology, which delivers more than a 40% increased starting capacity*.
Connection options
Generac's OHV engine and large-capacity steel fuel tank ensures long engine life and run times, while the steel tube cradle provides added strength.
Ownership note
The low-oil feature protects the generator from damage.
Additional manufacturer note
The GP6500 can be easily transported across rough or difficult terrain with the heavy-duty wheels and easy fold-down handle.
Best-fit uses
Standout features
Use the independent calculator before choosing a battery system or generator.
Find My Generator score
Best for specific needs
Compared with 144 high output portable generators in the current catalog.
Running and peak output versus the class
Longest published runtime figure
Lower weight scores higher
Single-fuel operation
Output or stored energy per listed dollar
Class comparison
A number is more useful with context. Each row shows this model beside its class median and translates the difference into a percentile.
Running output
Higher than 6% of its class
Peak output
Higher than 6% of its class
Published runtime
Longer than 53% of its class
Product weight
Lighter than 91% of its class
How the score works: Scores use published specs and are relative to comparable products in this catalog. Missing specs are excluded and remaining weights are normalized. Runtime is the longest manufacturer-published figure and may use a different load or fuel than another model.
Ownership resources
Start with the exact Generac GP6500E COsense 49ST/CSA model or item number. Accessory families can look alike while using different connectors, electrical limits, engines, or mounting points.
Compatible accessories
Use a correctly rated cord or professionally selected inlet connection for the intended load.
This model’s published information references parallel operation. Use the manufacturer’s matching kit and pairing rules.
Model-matched filters, spark plugs, batteries, oil supplies, and service parts support scheduled maintenance.
A fitted storage cover protects a cooled, stored generator. A running shelter must be designed for generator operation.
Compatibility note: Links lead to manufacturer or official retailer resources. Confirm the full model or item number, connector type, voltage, amperage, and published compatibility list before buying. Installation involving a home panel, inlet, transfer switch, or fuel plumbing should be handled as required by local code.