✔ 100% Free Shipping ✔ Authorized SunGold Power Dealer ✔ Manufacturer Warranty Included ✔ 10,000+ Customers Trust Outbound Power ✔ Questions? Ask a Friendly Power Expert >>
SunGold Power 4000W DC 12V Split Phase Pure Sine Wave Inverter With Charger Delivers True Whole-Home Power for Reliable Off-Grid and Backup Energy Independence
When the grid goes down or you've decided to leave it behind entirely you need more than a basic inverter. You need a power center that acts like a professional electrical system, not a science experiment. The SunGold Power 4000W DC 12V Split Phase Pure Sine Wave Inverter With Charger is exactly that: a heavy-duty, low-frequency inverter-charger-transfer switch combination engineered to power everything from your kitchen refrigerator to your RV air conditioner to the tools running your mobile business without compromise.
This is the unit that homeowners reach for when they're serious about backup power, the one that off-grid builders spec into their solar setups, and the one that full-time RVers and liveaboards trust when "almost enough power" simply isn't an option.
At Outbound Power, we specialize in portable and backup power solutions because we know that when your power matters, you can't afford to guess. The SunGold Power 4000W DC 12V Split Phase Pure Sine Wave Inverter With Charger represents the kind of serious, well-engineered equipment we're proud to carry — the type of unit that earns its place in a system and keeps delivering for years without drama.
SunGold Power 4000W DC 12V Features
Pure Sine Wave Power Keeps Every Appliance Running Safely
This inverter produces clean, smooth power just like your wall outlet at home. That means your refrigerator, CPAP machine, TV, and sensitive electronics run safely without humming, overheating, or getting damaged over time.
Split-Phase Output Powers Both 120V and 240V at Once
Most inverters only handle half your panel. This one outputs both 120V and 240V simultaneously, so your well pump, electric dryer, and air conditioner stay powered — just like when the grid is fully on.
A Massive Surge Rating Starts Heavy Motors Without Failing
With 12,000 watts of surge power, this unit handles the startup spike from air conditioners, pumps, and compressors effortlessly. Most inverters trip under that load. This one holds steady and keeps everything running smoothly.
The Built-In Charger Keeps Your Batteries Full and Healthy
No separate charger needed. The built-in 120A smart charger works in three stages — bulk, absorption, and float protecting your batteries from overcharging and extending their lifespan, whether you use lead-acid, AGM, gel, or lithium.
Auto Generator Start Takes Over So You Never Have To
When your batteries run low, the inverter automatically starts your generator. Once batteries are fully charged, it shuts the generator off. No manual effort needed — perfect for remote cabins, off-grid homes, and unattended job sites.
You Choose AC or Battery Priority Based on Your Needs
A simple switch lets you decide whether the inverter pulls from the grid first or your battery bank first. That flexibility helps solar users maximize self-consumption while still having reliable grid backup when batteries run low.
The Remote Control Lets You Monitor Everything From Anywhere
Check battery voltage, input and output power, and system status right on the LCD display. Use the included remote control to manage the unit from across the room — no crawling behind panels or equipment required.
SunGold Power 4000W DC 12V Warranty
SunGold provides a limited warranty policy, ensuring the absence of defects in materials, workmanship, and performance during the warranty period.
What's Included
1 x SunGold Power 4000W DC 12V
1 x Remote Control
1 x English Manual
1 x BTS Cable
SunGold Power 4000W DC 12V Specifications
Continuous Output Power
4000W
Surge Rating
12000W (20 seconds)
AC Output
120V AC and 240V AC
AC Input
240V AC
Output Wave
Pure Sine Wave (Bypass Mode)
Typical Transfer Time
10ms (Max)
Nominal Efficiency
>88%
Nominal Input Voltage
12.0V DC
Minimum Start Voltage
10.0V DC
Low Battery Alarm
10.5 – 11.0V DC
Low Battery Trip
10.0 – 10.5V DC (Selectable via SW1)
High Voltage Alarm
16.0V DC
Low Battery Restart Voltage
13.0V DC
Idle Consumption
45W
Power Saver Mode Idle Consumption
18W
Charger Rate
120A ± 5A
AC Input Range (Grid or Generator)
140V – 270V AC / 184V – 253V AC (Selectable via SW2)
Overcharge Protection Shutdown
15.7V
Charge Settings
Selectable based on battery type
Adjustable Charge Current
0% – 100% / Off
Charging Type
3-Step Intelligent Battery Charger
SunGold Power 4000W DC 12V 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.
I like to jack re ed 5000 Plus it's a excellent unit I have it for my home and camping and traveling good price at this time from outbound and God bless and thank you
The purchase and delivery went smooth and timely. I haven't used the fridge yet besides cooling it down once, which it did. I'm looking forward to putting it to full use.
Hi Robert, thank you for your positive feedback! We're glad the purchase and delivery process met your expectations. We hope the freezer serves you well and look forward to hearing about your experience once you start using it fully. Enjoy!
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.
Thank you for your kind words and support! We’re glad to hear you’re satisfied with our pricing and service. We look forward to assisting you with your upgrade when you’re ready. Thanks again for choosing Outbound Power, and please let us know if we can ever be of service.
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.
Thank you for the great review! We’re glad to hear it is making work easier. We truly appreciate your business. Please let us know if there is anything more we can do to be of service!
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!
Thank you for the positive feedback! We strive to provide excellent customer service and we're glad to hear that you had a great experience with us. We appreciate your support and hope to continue serving you in the future!