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Go Power! 1500-Watt Pure Sine Inverter & Transfer Switch for Automatic Shore-to-Battery Power That Never Skips a Beat
When the grid goes down or when you simply leave it behind the last thing you want is to scramble for power. The Go Power! 1500-Watt Pure Sine Inverter & Transfer Switch (model GP-SW1500-TS) is engineered for exactly that moment: the seamless, automatic handoff from shore power to battery power, without flipping a single switch or missing a beat.
This isn't just an inverter. It's a two-in-one power management solution that combines a robust 1500-watt pure sine wave inverter with a built-in 20-amp transfer switch in a single, compact unit. Whether you're a homeowner preparing for outages, an RVer living life on the open road, an off-grid enthusiast running a remote cabin, or a mobile contractor powering a worksite, the GP-SW1500-TS delivers the kind of clean, reliable AC power you can build your life around.
Outbound Power isn't a general electronics marketplace. We specialize exclusively in portable and backup power solutions for homeowners, RVers, off-grid builders, and mobile professionals. That focus means we understand the products we carry at a level that a big-box retailer simply cannot match.
Go Power! 1500-watt Pure Sine Inverter & Transfer Switch Features
It automatically switches from shore power to battery power.
When grid power cuts out, this unit detects it instantly and switches to battery power on its own. No buttons to press, no delays your appliances just keep running like nothing happened.
It delivers clean power that works like your home outlet.
Pure sine wave output means your electronics get smooth, stable power. Microwaves, TVs, laptops, and medical devices all run safely without buzzing, overheating, or getting damaged just like plugging into a wall.
It runs 1500 watts so you can power multiple devices at once.
That's enough to run a microwave, TV, lights, and outlets simultaneously. Whether you're at home during an outage or living off-grid, you get real, usable power not just enough for one small device.
It combines two devices into one compact, space-saving unit.
The inverter and transfer switch are built together in a single box. This saves installation space, reduces wiring complexity, and cuts down the number of parts that could ever fail or need replacing.
It is cUL certified for safe use in homes and vehicles.
Independent safety testing confirms this unit meets strict North American electrical standards. That means you can install it in your RV, home, or worksite knowing it has been reviewed and approved for safe operation.
It is built tough inside a slim, low-profile housing.
The durable casing protects internal components while keeping the unit slim enough to fit under benches, inside cabinets, or on tight walls perfect for RVs, vans, trailers, and compact utility rooms.
It comes with a 2-year warranty for lasting peace of mind.
Go Power! stands behind this product with a full two-year warranty. If something goes wrong, you are covered making this a smart, low-risk investment for your home backup or off-grid power system.
Go Power! 1500-watt Pure Sine Inverter & Transfer Switch Warranty
Go Power! provides a 2-year warranty policy, ensuring the absence of defects in materials, workmanship, and performance during the warranty period.
What's Included
1 x Go Power! 1500-watt Pure Sine Inverter & Transfer Switch
Go Power! 1500-watt Pure Sine Inverter & Transfer Switch Specifications
DC Voltage
12VDC
Voltage Range
10.0 ~ 16.0VDC
No Load Current
< 0.9A
Continuous Output Power
1500W (de-rating after 40°C, refer to de-rating curve)
Surge Power (<0.2Sec)
2400W
Peak Power (<3 Min)
1800-2400W
Output Power (<3 Min)
1500-1800W
Frequency
50 / 60 Hz ± 0.1%
Output Voltage
100 / 110 / 115 / 120VAC ±3%
Efficiency Max.
88%
Output Waveform
Pure Sine Wave
Circuit Breaker
20A
Transfer Switch
Standard ATS : Inverter to utility AC: <5ms.; Utility AC to inverter. <10ms.
BAT.Low Alarm ± 3%
10.5VDC
BAT.Low Shut-down ± 3%
10.0VDC
Input Protection
Reverse Polarity (Fuse) / Under Voltage / Over Voltage Protection / AC over current (Breaker)
Output Protection
Short Circuit / Overload / Over Temperature / Over Voltage
Operating Temp.
-20 °C~40 °C refer to GP-SW1500TS power de-rating curve
Storage Temp.
-40 °C~70 °C
Relative Humidity
Max. 90%, non-condensing
Regulations and Safety
Certified UL 458 (6th Edition), Certified FCC class B
Dimensions (L x W x H)
283x128x351 mm / 11.14×5.04×13.82 inch
Go Power! 1500-watt Pure Sine Inverter & Transfer Switch Manual
Common Customer Questions
Get answers to the most frequently-asked questions customers ask before placing an order.
Is Outbound Power an Authorized Dealer?
Yes! Outbound Power is an Authorized Dealer for every single brand and product on our store.
How long will it take for my order to arrive?
Shipping times vary depending on your location and the product or products ordered.
Order Processing Time Most products are processed within 1-3 business days. If there is a delay in processing your order, we will alert you with as much information as possible about what to expect.
After order processing is complete, you will receive tracking information to monitor your order while it is in transit.
Order Shipping Time Following processing, it may take between 3 and 8 days to arrive, depending on your location.
Please refer to the product page for your item and reference the estimated delivery time frame for more details.
Additionally, you can see the estimated delivery time frame during checkout and receive a tracking number once your order ships.
What are your shipping rates? Do you offer free shipping?
Everything on our store ships for free. Really!
What is Outbound Power's return policy?
Most items may be returned within 30 days of delivery. Please refer to our Returns & Exchanges policy to determine what items are eligible. Returns are not accepted beyond 30 days following delivery.
Are Outbound Power products used/old/refurbished?
Everything sold on our website is brand-new.
Do you price match?
No — we price BEAT! Please refer to our Price Beat Promise for full details.
Great pricing. When I am ready to upgrade, I plan on doing business with you all again. You value customers and that is greatly appreciated. Thanks for everything.
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Exact fit to the Cummins 4500i small battery compartment.
Thank you for your great review! We're glad the battery fit perfectly and met your expectations. If you need anything else, please don’t hesitate to reach out, we’re always here to help.
Hi Sam, thank you for your fantastic review! We're so glad to hear the Pecron Trolley Kit works great for you. If you need any further assistance, feel free to reach out. Cheers!
This was purchased to run a small compressor when our crews are on job sites where running and moving power cords is inconvenient and time consuming. The generator is lightweight and perfect for the task. We're now investing in a second unit.
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I like outbound because they give a good deal discount called. They help when you call nice people when you call the number they answer and help thank you
Hi Melvin, thank you for your kind words! We're glad you had a great experience and appreciate your support. If you need anything else, we're here to help!
Excellent service with excellent pricing. By far the best price I could find on the battery. Delivery arrived in perfect condition. love all the tracking information.
Thank you so much for the kind review! We’re glad we could provide a great price and that everything arrived to your satisfaction. We also appreciate you mentioning the tracking updates. We want every customer to feel informed and confident from order to delivery. Thanks again for choosing Outbound Power and please let us know if we can ever be of service!
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Outbound Power did a great job with communication and answered all my presale questions. Shipping was prompt - and was patient with me during a small snafu when my neighbor was being “helpful” and took one of the boxes and neglected to tell me. Great prices too!
Hi James, thank you for taking the time to leave us a review. We are thrilled to hear that you had a positive experience with our team! Thank you for your business and please feel welcome to reach out anytime if we can be of service!
Fantastic service from Jam at Outbound Power made this an easy choice.
We are in the installation phase now and are excited to have a reliable system for our power backup needs.
Thank you for your kind words and for choosing Outbound Power for your backup power needs. We're happy to hear that Jam provided fantastic service and helped make the decision process easy for you. Our goal is always to help customers find a reliable backup power solution that fits their needs.
We’re excited for you to begin the installation phase and are confident you’ll be pleased with the Anker SOLIX E10 Smart Hybrid Whole-Home Backup System. Thank you again for choosing Outbound Power!
This works very well. I can charge my unit and expansion batteries more than twice as fast as using a 120 volt wall outlet. I think it also helps with the battery temperature.
Hi there, thank you for your positive feedback! We're glad to hear that the cable is working well for you and is able to charge your unit and expansion batteries at a faster rate. If we can be of service again, please let us know!