RVMP Flex Power Dual Fuel 4000i Installed Generator
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The RVMP Flex Power Dual Fuel 4000i Installed Generator is a cutting-edge power generation solution designed specifically for recreational vehicles (RVs) and mobile homes. This generator is a testament to the advancements in portable power technology, offering exceptional versatility, efficiency, and reliability to ensure a comfortable and convenient experience for RV enthusiasts and travelers.
Dual Fuel Capability: One of the standout features of the RVMP Flex Power 4000i is its dual fuel capability. This generator can run on both gasoline and propane, providing users with the flexibility to choose the most readily available and cost-effective fuel source for their specific needs. This versatility is especially valuable when traveling through various regions with varying fuel availability.
Generous Power Output: The RVMP Flex Power 4000i is capable of delivering a substantial 4000 watts of peak power, making it suitable for running multiple appliances and devices simultaneously within your RV. Whether you need to power air conditioning units, kitchen appliances, or electronic devices, this generator has the capacity to meet your demands.
Quiet Operation: This generator features advanced noise reduction technology, ensuring quiet operation. This is crucial for RV enthusiasts who value peace and tranquility while camping or traveling in nature. The reduced noise levels also make it more suitable for campgrounds with noise restrictions.
Electric Start: The RVMP Flex Power 4000i comes equipped with an electric start system, making it incredibly easy to start the generator with the push of a button. This eliminates the need for strenuous manual pull-starts, enhancing user convenience.
Compact and Portable: Despite its impressive power output, this generator is designed with portability in mind. It features a compact and lightweight design, along with sturdy wheels and a handle, allowing you to easily transport it to different locations around your RV or campsite.
RV-Ready Design: The RVMP Flex Power 4000i is specifically engineered to meet the needs of RV owners. It includes RV-ready outlets, such as a 30-amp RV receptacle, ensuring seamless integration with your RV's electrical system.
Safety Features: Safety is a top priority, and this generator comes equipped with a variety of safety features, including overload protection and low-oil shutdown, to safeguard both the generator and your valuable appliances.
Digital Display: The generator features an intuitive digital display panel that provides real-time information on voltage, fuel level, and operating hours, allowing you to monitor its performance with ease.
The RVMP Flex Power Dual Fuel 4000i Installed Generator is a highly reliable and versatile power solution tailored to the needs of RV owners. Its dual fuel capability, robust power output, quiet operation, and RV-specific features make it an ideal choice for those seeking a dependable source of electricity while on the road. With this generator, you can enjoy the comforts of home wherever your RV adventures take you.
Important Note: This generator is for RVs that are prepped for a permanent generator install location or have the adequate space and fuel supply (gasoline and propane) located in the area where the generator will be installed.
Important Note: This generator produces hot exhaust gases which must be piped out of the RV. The exhaust outlet is on the bottom of the generator. Please be sure to use the proper exhaust connections, hangers, and clamps which can be found HERE. Before using this generator, be sure to install a carbon monoxide detector inside the RV.
Features
- Better efficiency - On-demand power uses less fuel than other popular generator models both while running and at rest
- Dual Fuel - 2 types applicable in one unit: Gasoline or Propane
- Hassle-free electric start system with remote start lets you start the generator from inside the coach
- Designed for reliable service with all total low harmonic distortion for use with sensitive electronics.
- Emergency backup recoil start gives you further peace of mind when you are using the Flex Power 4000i – No other generator has this capability
- Multi-pole PM brushless alternator incorporates a digital voltage regulator. The total harmonic distortion is only 3%, which makes it safer to power all types of electronic devices.
- Offers stepped-up power-on-demand, eliminating issues of overload. The motor slows down when you reduce load and will speed up when you resume a higher load. High performance, low cost, quiet operations, and fuel efficiency make this RV generator the best in its class by every measure.
- Compared to the competition: The Flex Power™ 4000i is lighter, more fuel efficient, lower in harmonic distortion, quieter, has a higher base load, and has many more features.
- 100% replacement for Onan installed generators - Fits in the same space as Onan and other competitors.
- Your safety is our concern, the Flex Power™ 4000i includes many safety features that go above and beyond industry standards. Including a digital valve controller that offers auto shut-off for fire prevention.
- Consistent output - Less distortion (3% compared to 17% in competitive models) allows you to power sensitive devices like laptops, TVs, and gaming counsels, without worrying about overload
- Softer sound - Consistent output allows for a quieter run without loud rev cycles
- Significantly fewer emissions when run with propane - up to 10x less output
- Digital hour reading – Easily measure running time for maintenance
- Safer design -Engineered and built to mitigate fire risk
- Digital valve controller - Auto shutoff monitoring for fire prevention
- Remote start capability – wiring harness for connecting to controls within the RV for remote starting
- Heat sensor - Built-in protection from overheating and over-revving
- Patent-pending technology
- Exceeds U.S. Forest Services (USFS), CSA, RVIA, and EPA emission requirements.
- Original equipment for Forrest River, NeXus RV, and Thor Industry.
- Backed by our guarantee to provide you the best customer support and a 3-year limited warranty.
Specifications
- AC/DC Excitation: Brushless PM
- Amps: 33.3
- Design: Multi Pole PM
- Dimensions: 29.5" L x 19.25" W x 13.5" H
- Frequency: 60
- Fuel: Gasoline/LP
- RPM: Variable 2200-3600
- Voltage Regulation: Digital
- Volts: 117-120
- Watts: 4000
- Weight: 121 lb. (54.88 kg)
Includes
- Owner's manual
- Installation guide
- Oil funnel
- Spark plug toolkit
- Screwdriver
Document Library
Shipping Policy
Free shipping on all orders
How long does it take for delivery?
5-7 working days(Except for pre-sale products) .
Which countries do you ship to?
Only the United States, other countries need to place orders on our other websites.
We cannot provide the following services.
1. Alaska
2. Hawaii
3. PR
4. VI
How will my delivery be shipped?
UPS, FEDEX are our logistics partners, shipping Build The Power products.
I ordered more than one item. Will they all be delivered at the same time?
We try to make sure all your items reach you at the same time. Sometimes our products are not always sent together since different shipping options can be used, depending on the product. Once an item has been shipped, you will receive a shipment notification email.
Can I change the delivery address of my package after it has been shipped out?
Unfortunately, we cannot change the shipment once the product is en route.
What do I need to do when I received a different product than what I ordered?
Please contact customer support at sales@buildthepower.com
Description
The RVMP Flex Power Dual Fuel 4000i Installed Generator is a cutting-edge power generation solution designed specifically for recreational vehicles (RVs) and mobile homes. This generator is a testament to the advancements in portable power technology, offering exceptional versatility, efficiency, and reliability to ensure a comfortable and convenient experience for RV enthusiasts and travelers.
Dual Fuel Capability: One of the standout features of the RVMP Flex Power 4000i is its dual fuel capability. This generator can run on both gasoline and propane, providing users with the flexibility to choose the most readily available and cost-effective fuel source for their specific needs. This versatility is especially valuable when traveling through various regions with varying fuel availability.
Generous Power Output: The RVMP Flex Power 4000i is capable of delivering a substantial 4000 watts of peak power, making it suitable for running multiple appliances and devices simultaneously within your RV. Whether you need to power air conditioning units, kitchen appliances, or electronic devices, this generator has the capacity to meet your demands.
Quiet Operation: This generator features advanced noise reduction technology, ensuring quiet operation. This is crucial for RV enthusiasts who value peace and tranquility while camping or traveling in nature. The reduced noise levels also make it more suitable for campgrounds with noise restrictions.
Electric Start: The RVMP Flex Power 4000i comes equipped with an electric start system, making it incredibly easy to start the generator with the push of a button. This eliminates the need for strenuous manual pull-starts, enhancing user convenience.
Compact and Portable: Despite its impressive power output, this generator is designed with portability in mind. It features a compact and lightweight design, along with sturdy wheels and a handle, allowing you to easily transport it to different locations around your RV or campsite.
RV-Ready Design: The RVMP Flex Power 4000i is specifically engineered to meet the needs of RV owners. It includes RV-ready outlets, such as a 30-amp RV receptacle, ensuring seamless integration with your RV's electrical system.
Safety Features: Safety is a top priority, and this generator comes equipped with a variety of safety features, including overload protection and low-oil shutdown, to safeguard both the generator and your valuable appliances.
Digital Display: The generator features an intuitive digital display panel that provides real-time information on voltage, fuel level, and operating hours, allowing you to monitor its performance with ease.
The RVMP Flex Power Dual Fuel 4000i Installed Generator is a highly reliable and versatile power solution tailored to the needs of RV owners. Its dual fuel capability, robust power output, quiet operation, and RV-specific features make it an ideal choice for those seeking a dependable source of electricity while on the road. With this generator, you can enjoy the comforts of home wherever your RV adventures take you.
Important Note: This generator is for RVs that are prepped for a permanent generator install location or have the adequate space and fuel supply (gasoline and propane) located in the area where the generator will be installed.
Important Note: This generator produces hot exhaust gases which must be piped out of the RV. The exhaust outlet is on the bottom of the generator. Please be sure to use the proper exhaust connections, hangers, and clamps which can be found HERE. Before using this generator, be sure to install a carbon monoxide detector inside the RV.
Features
- Better efficiency - On-demand power uses less fuel than other popular generator models both while running and at rest
- Dual Fuel - 2 types applicable in one unit: Gasoline or Propane
- Hassle-free electric start system with remote start lets you start the generator from inside the coach
- Designed for reliable service with all total low harmonic distortion for use with sensitive electronics.
- Emergency backup recoil start gives you further peace of mind when you are using the Flex Power 4000i – No other generator has this capability
- Multi-pole PM brushless alternator incorporates a digital voltage regulator. The total harmonic distortion is only 3%, which makes it safer to power all types of electronic devices.
- Offers stepped-up power-on-demand, eliminating issues of overload. The motor slows down when you reduce load and will speed up when you resume a higher load. High performance, low cost, quiet operations, and fuel efficiency make this RV generator the best in its class by every measure.
- Compared to the competition: The Flex Power™ 4000i is lighter, more fuel efficient, lower in harmonic distortion, quieter, has a higher base load, and has many more features.
- 100% replacement for Onan installed generators - Fits in the same space as Onan and other competitors.
- Your safety is our concern, the Flex Power™ 4000i includes many safety features that go above and beyond industry standards. Including a digital valve controller that offers auto shut-off for fire prevention.
- Consistent output - Less distortion (3% compared to 17% in competitive models) allows you to power sensitive devices like laptops, TVs, and gaming counsels, without worrying about overload
- Softer sound - Consistent output allows for a quieter run without loud rev cycles
- Significantly fewer emissions when run with propane - up to 10x less output
- Digital hour reading – Easily measure running time for maintenance
- Safer design -Engineered and built to mitigate fire risk
- Digital valve controller - Auto shutoff monitoring for fire prevention
- Remote start capability – wiring harness for connecting to controls within the RV for remote starting
- Heat sensor - Built-in protection from overheating and over-revving
- Patent-pending technology
- Exceeds U.S. Forest Services (USFS), CSA, RVIA, and EPA emission requirements.
- Original equipment for Forrest River, NeXus RV, and Thor Industry.
- Backed by our guarantee to provide you the best customer support and a 3-year limited warranty.
Specifications
- AC/DC Excitation: Brushless PM
- Amps: 33.3
- Design: Multi Pole PM
- Dimensions: 29.5" L x 19.25" W x 13.5" H
- Frequency: 60
- Fuel: Gasoline/LP
- RPM: Variable 2200-3600
- Voltage Regulation: Digital
- Volts: 117-120
- Watts: 4000
- Weight: 121 lb. (54.88 kg)
Includes
- Owner's manual
- Installation guide
- Oil funnel
- Spark plug toolkit
- Screwdriver
Document Library
Shipping Policy
Free shipping on all orders
How long does it take for delivery?
5-7 working days(Except for pre-sale products) .
Which countries do you ship to?
Only the United States, other countries need to place orders on our other websites.
We cannot provide the following services.
1. Alaska
2. Hawaii
3. PR
4. VI
How will my delivery be shipped?
UPS, FEDEX are our logistics partners, shipping Build The Power products.
I ordered more than one item. Will they all be delivered at the same time?
We try to make sure all your items reach you at the same time. Sometimes our products are not always sent together since different shipping options can be used, depending on the product. Once an item has been shipped, you will receive a shipment notification email.
Can I change the delivery address of my package after it has been shipped out?
Unfortunately, we cannot change the shipment once the product is en route.
What do I need to do when I received a different product than what I ordered?
Please contact customer support at sales@buildthepower.com
what’s included
The E2000LFP Expandable Power Station combines power and flexibility in a portable package. Link it with two EB3000 battery packs to reach an impressive 8064Wh capacity - enough for almost any power need.
With 2000W AC output, it runs most household devices and tools without breaking a sweat. The advanced LiFePo4 batteries deliver outstanding durability, keeping 80% capacity even after 3500 charging cycles.
Charging is quick and flexible. The station accepts up to 1300W input across multiple ports, with 600W maximum solar input. Using solar panels, you'll fully charge in 2-3 hours. Need it faster? Dual AC adapters cut that time to just 1.5-2 hours.
Specification
The E2000LFP Expandable Power Station combines power and flexibility in a portable package. Link it with two EB3000 battery packs to reach an impressive 8064Wh capacity - enough for almost any power need.
With 2000W AC output, it runs most household devices and tools without breaking a sweat. The advanced LiFePo4 batteries deliver outstanding durability, keeping 80% capacity even after 3500 charging cycles.
Charging is quick and flexible. The station accepts up to 1300W input across multiple ports, with 600W maximum solar input. Using solar panels, you'll fully charge in 2-3 hours. Need it faster? Dual AC adapters cut that time to just 1.5-2 hours.
Shipping & Delivery
The E2000LFP Expandable Power Station combines power and flexibility in a portable package. Link it with two EB3000 battery packs to reach an impressive 8064Wh capacity - enough for almost any power need.
With 2000W AC output, it runs most household devices and tools without breaking a sweat. The advanced LiFePo4 batteries deliver outstanding durability, keeping 80% capacity even after 3500 charging cycles.
Charging is quick and flexible. The station accepts up to 1300W input across multiple ports, with 600W maximum solar input. Using solar panels, you'll fully charge in 2-3 hours. Need it faster? Dual AC adapters cut that time to just 1.5-2 hours.
Get Started In 3 Simple Steps
The whole process is easy – no salespeople involved.

Step 1: Choose Your System
Pick your products at direct-to-you prices. Browse complete systems and see exactly what you'll pay.

Step 2: Place Your Order
Quick online checkout with free U.S. shipping. Your order ships within 3-5 business days.

Step 3: Power Up
Professional guidance for setup and connection. Our team helps you get the most from your power station.
The Build The Power Difference
Here’s why you’ll prefer us over other providers.
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What Our Customers Say
Direct experiences from homeowners who took control of their energy costs.
Frequently Asked Questions
How is Build The Power different from other companies?
Unlike traditional companies, we've removed the complex network of salespeople, project managers, and dealer fees. You browse and buy directly through our digital platform, cutting costs by 20-50% while still getting expert support when you need it.
How does your ordering process work?
Browse & Select – Find the product that suits your needs.Add to Cart – Click "Add to Cart" and proceed to checkout. Secure Payment – Complete your purchase using our secure payment options. Order Confirmation – You’ll receive an email confirmation with your order details. Shipping & Delivery – We process and ship your order as quickly as possible. A tracking number will be provided. If you have any questions, feel free to contact us!
Do you offer free shipping?
Yes! We offer free shipping on all orders, with no minimum purchase required. Enjoy hassle-free shopping without worrying about extra shipping costs. Once your order is processed, we’ll provide a tracking number so you can follow your shipment’s progress.
What's your return policy?
We offer a 30-day return policy for your peace of mind. If you're not completely satisfied with your purchase, you can return it within 30 days of delivery for a refund or exchange. The item must be in its original condition and packaging.
To start a return, contact our support team, and we’ll guide you through the process.
Can I get help with installation?
We do not offer installation services, but we’re happy to recommend trusted companies or services that can assist you. If you need help finding an installer, feel free to contact us, and we’ll point you in the right direction!