PowerSmart MB5040DC Dual Fuel Open Frame Inverter Generator | 4400W Gas / 4000W Propane, Electric Start, CO Alert

Gas or Propane. Electric Start. 10 Hours of Runtime. RV-Ready.

The PowerSmart MB5040DC is a 4400W dual fuel open frame inverter generator that runs on gasoline (4400W, up to 10 hours) or propane (4000W, up to 6 hours) — with electric start so you're never pulling a cord. Clean sine wave inverter power keeps laptops, CPAP machines, and sensitive electronics safe. The 30A RV outlet makes it a direct plug-in for most RVs and travel trailers. Built-in CO alarm auto-shuts the generator if carbon monoxide reaches a dangerous level. EPA compliant, 2-year warranty.

Key Features

• Dual Fuel: Gas or Propane — 4400W / up to 10 hrs on gasoline; 4000W / up to 6 hrs on propane. Switch fuels based on availability — critical during extended outages when gas stations are closed
• Electric Start + Backup Recoil Start — Push-button electric start for instant, effortless ignition; backup recoil start ensures you're never stranded if the battery is low
• 30A RV Outlet Included — Direct plug-in for most RVs and travel trailers; no adapter needed for standard 30A RV shore power connections
• Clean Inverter Power (Pure Sine Wave) — Safe for laptops, phones, CPAP machines, and sensitive electronics that conventional open-frame generators can damage
• Built-In CO Alarm — Carbon monoxide sensor automatically shuts the generator down if CO levels reach a dangerous threshold — critical safety protection for campsites and semi-enclosed spaces
• Multiple Power Outputs — 120V 30A RV outlet, 2× 120V 20A outlets, 12V DC outlet, and USB ports for tools, appliances, and devices simultaneously
• Up to 10 Hours Runtime on Gas — One of the longest runtimes in this wattage class; propane runtime up to 6 hours depending on tank size
• 72 dB at 23 ft — Quiet for an open frame generator at this wattage; suitable for campgrounds and residential neighborhoods
• EPA Compliant + 2-Year Warranty — Legal for use in all 50 states; backed by PowerSmart's full 2-year warranty and support

MB5040DC vs. HB5040DC — Which Is Right for You?

• HB5040DC (3800W / Enclosed) — Best for camping and residential use; quieter enclosed design, 5-in-1 smart display, pull-start only
• MB5040DC (4400W / Open Frame) — Best for RV use and high-load applications; electric start, 30A RV outlet, 10-hour gas runtime, more wattage headroom

Perfect For

• RV and travel trailer shore power (30A direct plug-in)
• Emergency home backup during extended outages
• Job sites requiring high-surge power tools
• Camping and outdoor events where fuel flexibility matters

Specs

• Surge Watts (Gas): 4400W
• Surge Watts (Propane): 4000W
• Runtime (Gas): Up to 10 hrs at 50% load
• Runtime (Propane): Up to 6 hrs (varies by tank size)
• Start Type: Electric Start + Backup Recoil
• Outlets: 120V 30A RV, 2× 120V 20A, 12V DC, USB
• Noise Level: 72 dB at 23 ft
• Frame Type: Open Frame
• Safety: CO Alarm, Low Oil Shutoff
• Certification: EPA Compliant
• Warranty: 2 Years
• Weight: 98 lbs