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The Generac GP3600 Portable Generator delivers reliable 3,600 watts of power for home backup, job sites, and outdoor projects — all in a compact, easy-to-move package. Built for performance and durability, it features PowerRush™ Advanced Technology, giving you over 40% more starting capacity so you can handle tools and appliances that demand extra power at startup.
Stay safe with COsense® Technology, which automatically detects and stops operation if carbon monoxide levels become dangerous — protecting you and your family from invisible hazards. The rugged OHV engine ensures long life and dependable performance, while the large 3.7-gallon fuel tank delivers extended run times.
Move it effortlessly wherever power is needed thanks to heavy-duty, never-flat wheels and a fold-down handle, and trust the hardened steel frame to stand up to years of use. Whether you’re powering through an outage or running equipment at a job site, the GP3600 gives you dependable power you can count on — without the premium price.
Power smarter and safer with the Generac GP3600 Portable Generator — your go-anywhere, do-anything source of portable energy.
Experience over 40% more starting capacity with PowerRush™ Technology. Operate high-demand appliances efficiently without sacrificing performance. Empower multiple tools and devices simultaneously, enhancing productivity at home or job sites.
COsense® Technology detects hazardous carbon monoxide levels, stopping generator operation automatically. This safety feature provides essential alerts, ensuring family safety by effectively eliminating dangerous emissions for peace of mind and safer usage.
Generac’s OHV engine offers long-lasting performance with splash lubrication. It enhances durability, keeping your investment functional for years. This engine meets various power demands while ensuring continued reliability and efficiency through extended generator life.
The large-capacity fuel tank promises extended operational periods without frequent refills. Integrated fuel gauge provides convenient monitoring for steady power flow. Ideal for long projects or outages, it offers reliable electricity continuously.
The hardened steel tube cradle provides exceptional strength and durability, prolonging equipment life. It withstands rugged conditions, ensuring consistent performance. Its robust structure promises longevity, safeguarding the generator against daily wear and tear.
Move the GP3600 effortlessly with heavy-duty, never-flat wheels. The fold-down handle allows easy portability and space-saving storage. It’s practical for relocation and meets portability needs effortlessly, simplifying transportation and storage solutions.
Generac provides a 3-year warranty policy, ensuring the absence of defects in materials, workmanship, and performance during the warranty period.
| Feature | GP3600 (7721) | GP6500 (7690) | GP6500E (7683) | GP6500E (7713) | GP8000E (7686) | GP8000E (7676) |
|---|---|---|---|---|---|---|
| Configuration | 49ST | 49ST | 49ST | 49ST/CSA | 49ST | 50ST |
| Running / Starting Watts | 3600 / 4500 | 6500 / 8125 | 6500 / 8125 | 6500 / 8125 | 8000 / 10000 | 8000 / 10000 |
| PowerRush™ | Yes | Yes | Yes | Yes | Yes | Yes |
| CO-SENSE® | Yes | Yes | Yes | Yes | Yes | Yes |
| HomeLink™ Compatible | Yes | Yes | Yes | Yes | Yes | Yes |
| Engine Type | OHV | OHV | OHV | OHV | OHV | OHV |
| Engine Displacement | 212cc | 389cc | 389cc | 389cc | 420cc | 420cc |
| Starting Method | Recoil Start | Recoil Start | Electric Start | Electric Start | Electric Start | Electric Start |
| Battery Included | N/A | N/A | Yes | Yes | Yes | Yes |
| Low Oil Shutdown | Yes | Yes | Yes | Yes | Yes | Yes |
| Fuel Capacity (gal) | 3.7 | 6.9 | 6.9 | 6.9 | 7.9 | 7.9 |
| Run Time @ 50% Load (hrs) | 9.3 | 10.5 | 10.5 | 10.5 | 11 | 11 |
| Hour Meter | Yes | Yes | Yes | Yes | Yes | Yes |
| Fuel Gauge | Yes | Yes | Yes | Yes | Yes | Yes |
| Rated Voltage | 120V | 120/240V | 120/240V | 120/240V | 120/240V | 120/240V |
| Outlets (Covered) | 2x 120V 20A GFCI1x 120V 30A (L5-30R) | 2x 120V 20A GFCI1x 120/240V 30A (L14-30R) | Same as GP6500 | Same as GP6500 | 2x 120V 20A GFCI1x 120/240V 30A (L14-30R)1x 120/240V 50A (14-50R) | Same as 7686 |
| Handle Style | Folding | Dual Grip w/ Lock Pin | Same | Same | Dual Grip w/ Lock Pin | Same |
| Wheel Type | 8" Never Flat | 9.5" Never Flat | Same | Same | 9.5" Never Flat | Same |
| Dimensions (L×W×H in.) | 24.2 × 22.5 × 21.3 | 27.2 × 27 × 26.5 | 27.2 × 27 × 26.5 | Same | 27.2 × 27 × 26.5 | Same |
| Product Weight (lbs) | 115 | 172 | 198 | 198 | 198 | 198 |
| Residential Warranty | 2 Year Limited | 3 Year Limited | 3 Year Limited | 3 Year Limited | 3 Year Limited | 3 Year Limited |
| Commercial Warranty | 1 Year Limited | 1 Year Limited | 1 Year Limited | 1 Year Limited | 1 Year Limited | 1 Year Limited |
Generac’s GP3600 Generator Specifications |
|
|---|---|
| Model (Configuration) | 7721-1 (49 State) |
| AC Rated Output Running Watts | 3600 |
| AC Maximum Output Starting Watts | 4500 |
| Rated AC Voltage | 120 VAC |
| Rated AC Frequency | 60 Hz |
| Rated 120 VAC Amperage | 30A |
| Engine Displacement | 212cc |
| Engine Type | OHV |
| Engine RPM | 3600 |
| Recommended Oil | 10W-30 / SAE 30 |
| Oil Capacity qt (L) | 0.63 (0.6) |
| Lubrication Method | Splash |
| Automatic Voltage Regulation (AVR) | Yes |
| Choke Location | On Engine |
| Fuel Shut Off | On Fuel Tank |
| Starting Method | Recoil Pull Start |
| Low Oil Shutdown | Yes |
| Floating Neutral | Yes |
| Start Switch Type | On/Off |
| Start Switch Location | On Control Panel |
| Fuel Gauge | Yes |
| Fuel Tank Capacity gal (L) | 3.7 (14) |
| Run Time | |
| Handle Style | Dual Grip, Single Folding with Lock Pin |
| Wheel Type | 9.5” Never Flat |
| Warranty - Residential | 3 Year Limited |
| Warranty - Commercial | 1 Year Limited |
| Included | Engine oil, oil funnel, handle & wheel kit, owner's manual |
Dimensions and Weights |
|
| Length in (mm) | 24 (610) |
| Width in (mm) | 22.5 (570.5) |
| Height in (mm) | 21.3 (541.5) |
| Extended Length in (mm) | 36.5 (924) |
| Carton Length in (mm) | 27.2 (690) |
| Carton Width in (mm) | 17.9 (455) |
| Carton Height in (mm) | 19.7 (500) |
| Unit Weight lbs (kg) | 105 (47.6) |
| Shipping Weight lbs (kg) | 112 (50.8) |
My connectors arrived on time, were a perfect fit, and after running them through a couple trial runs have performed exceptionally well. Thank you!
Bought some additional batteries. Super easy to install and increase the solar capacity.
I purchased this cable to connect my Ecoflow DPU Ultra inverter with 5 batteries battery, to the 2nd port of my Ecoflow SHP-2, after purchasing a new inverter from Outbound power. (A new inverter, does not come with a dedicated SHP-2 cord) Works as intended with enough reach. Would buy again.
Thank you so much for taking the time to leave a review. We're so glad to hear that the cable is working great for you. Please let us know if there is ever anything else we can do to be of service!
We received the Trail as a free gift of the EcoFlow Black Friday promotion. We live in an off-grid cabin, and have a couple small 1 watt fans for moving air - the Trail has been perfect for this use. It has almost as much juice as our much heavier and bulkier Jackery 300. We love it.
Hi Kate,
Thank you so much for sharing this! We’re thrilled to hear the EcoFlow TRAIL 200DC has been such a great fit for your off-grid cabin. It’s awesome to know it’s delivering that kind of performance in such a compact package—and even holding its own against a larger unit.
We really appreciate you taking the time to leave a review, and we’re glad the Black Friday promo turned into something genuinely useful for you. If you ever need anything else or have questions down the road, we’re always here to help.
Thanks again for choosing Outbound Power!
Best regards,
Bill
Awesome
Hi Michael,
Thank you for the awesome feedback! We’re glad to hear you’re happy with the Solar Panels from Jackery. Stay blessed and Happy holidays in advance.
Awesome
Hi Michael,
Thank you for the awesome feedback! We’re glad to hear you’re happy with the Jackery Battery Pack 1000 Plus. If you ever have questions or need anything down the road, we’re always here to help.
Thanks again for choosing Outbound Power!
Best regards,
Bill
Gotcha with the title, I have purchased several items from OBP, like a repeat offender. I’m glad I stumbled across their website, every product I purchased has arrived on time and in great condition. As long as I have a need for their products, I will always be a customer, or repeat offender.
Hi Homer,
This made our day — we love the “repeat offender” title. Thank you for coming back to Outbound Power and for trusting us with multiple purchases. We’re glad everything has arrived on time and in great condition, every time.
We truly appreciate your loyalty and support, and we’ll be here whenever you’re ready for the next “offense.”
Thanks again for being such a great customer.
Best regards,
Bill
I've been looking all over for this cable connector. So, kudos for actually having it in stock. Delivery was fast and the connector works great.
Hi T.R.,
Thank you for taking the time to leave a review — we really appreciate it. We’re glad we had the connector you were looking for and that it arrived quickly and worked exactly as expected.
Thanks again for choosing Outbound Power. Please don’t hesitate to reach out if you need anything else in the future.
I haven’t installed as of now but will edit and repost once installed.
Hi Jeffrey,
Thank you for the 5-star review! We’re glad to hear your first impression of the EcoFlow Smart Home Panel 3 has been a positive one so far. We look forward to hearing how the installation goes once everything is up and running.
If you have any questions or need assistance during setup, our team is always here to help.
Thanks again for choosing Outbound Power,
Bill & the Outbound Power Team
This is my second Delta Pro Ultra! Bought to expand our home backup. Both units are connected to the Smart Home Panel 2
Hi John,
Thank you so much for the incredible 5-star review — and for being a returning customer! We’re honored that you chose a second DELTA Pro Ultra to expand your home backup system. Connecting both units to the Smart Home Panel 2 is an excellent setup for maximizing reliability and whole-home coverage.
We truly appreciate your trust and support. If you ever need assistance optimizing your configuration or adding accessories, our team is always here to help.
Thanks again for choosing Outbound Power,
Bill & the Outbound Power Team
