- High-performance power: Offers 8500 W of maximum power and 8200 W rated, perfect for industrial and high-demand applications.
- Guaranteed safety: Includes a carbon monoxide sensor and alarm, plus a low oil level alert and automatic shutoff for maximum protection.
- Reliable run time: 25 L tank that provides up to 8.5 hours of continuous operation, ideal for extended jobs.
- Versatile starting: Features manual and electric start with battery included, plus ATS compatibility for greater flexibility.
- Ergonomic design: Equipped with wheels, a handle, a fuel gauge, and a voltage meter for easy use and transport.
- Powerful and quiet engine: 459 cc air-cooled four-stroke engine with a noise level of 76 dB, suitable for a variety of environments.
General Product Information
The STANLEY® STXGGHG85G 8500-watt generator is a high-power solution for intensive energy needs in homes, job sites, or outdoor events. With a rated power of 8200 watts and a maximum starting output of 8500 watts, this single-phase unit is equipped with a rugged air-cooled four-stroke engine, with a 459 cc displacement and spark-plug ignition, running at 3600 RPM. It offers manual or electric start with battery included and a 25-liter fuel tank that allows up to 8.5 hours of continuous operation. Safety is guaranteed with a carbon monoxide sensor and a low oil level alert with automatic shutoff. It includes VFT meters, a fuel gauge, a voltage meter, and an AC circuit breaker for reset, plus ATS compatibility for automatic systems. Its portable design (686x546x546 mm, 85 kg) with wheels and a handle makes it easy to transport, while the 12V 8.3A DC output and a noise level of 76 dB ensure a reliable and efficient power supply in any scenario.
More Features
| SPECIFICATIONS | |
|---|---|
| Model No. | STXGGHG85G |
| ITEM SPECIFICATIONS | Gasoline power generator, 8500 Maximum power (watts), 8200 Rated power (watts), 76 Noise (dB), 25 L fuel tank, 15 L fuel tank, carbon monoxide alarm |
|---|---|
| MAXIMUM STARTING OUTPUT (Watts) | 8500 |
| RATED POWER (Watts) | 8200 |
| REVOLUTIONS PER MINUTE (RPM) | 3600 |
| AVAILABLE OUTPUTS (V/Hz) | 120/60 & 220/60 |
| DC OUTPUT | 12 V ⎓ 8.3 A DC output |
| PHASE TYPE | Single-phase |
| ENGINE FEATURES | |
| DISPLACEMENT (CC) | 456 |
| HORSEPOWER (HP) | 18 |
| START MODE | Recoil / Electric |
| CARBON MONOXIDE SENSOR AND ALARM | Not included (optional) |
| ATS AVAILABILITY | Yes |
| VFT METER AVAILABILITY | Yes |
| OIL VOLUME (L) | 1.1 |
| FUEL TANK CAPACITY (L) | 25 |
| FUEL GAUGE | Yes |
| VOLTAGE METER | Yes |
| INCLUDES WHEELS AND HANDLE | Yes |
| LOW OIL LEVEL INDICATOR | Low oil level alert and automatic shutoff |
| LOW FUEL LEVEL ALARM | Yes – fuel gauge |
| OVERLOAD ALARM | No |
| RESET FUNCTION | With AC circuit breaker |
| TOTAL HARMONIC DISTORTION | ≤ 20 % |
| THREE-PHASE PLUS | No |
| CONTINUOUS OPERATION CAPACITY (Hrs) | 8.5 |
| INCLUDES BATTERY | Included |
| NOISE LEVEL (dB) | 76 |
| PRODUCT DIMENSIONS (mm) (L x W x H) | 686×546×546 |
| PACKAGE DIMENSIONS (mm) (L x W x H) | 715×555×580 |
| NET WEIGHT / GROSS WEIGHT (kg) | 85 / 93.5 |
Support
- 2-year limited warranty
We stand behind the quality of our products, so we will repair, free of charge, any defect in materials or workmanship within the period stipulated by the warranty.
We take a range of thorough measures and guarantee that all our products are manufactured to the highest standards and comply with all regulations.

















