Pulsar Products GD400BN, 4000W Portable super-quiet Dual Fuel & Parallel Capability, RV-Ready, CARB Compliant
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Availability:
In Stock.
Arrives
Monday, Aug 10
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Style: 4000 Watts + Dual Fuel + Lightweight + RV Ready
Features
- 4000 peak watts / 3200 running watts on gas
- 3600 peak watts / 2800 running watts on propane
- Continuous operation up to 4.5-hours at half load (1.1 Gallon Fuel Tank)
- Ultra lightweight at only 47.3 pounds, ideal for outdoor activity use
- Super quiet, making around 59db at half load
- High speed 5.5HP 145cc engine, good for emergency home backup power
- Safely power sensitive electronics such as televisions, cell phones, laptops, and more
Description
Pulsar Products GD400BN, 4000W Portable super-quiet Dual Fuel & Parallel Capability, CARB Compliant Inverter Generator, ultra-lightweight and RV Ready, 4000-Watt Gray
Wattage: 4000 watts
Fuel Type: propane
Power Source: gas-powered
Recommended Uses For Product: RV
Voltage: 120 Volts (AC)
Output Wattage: 4000
Additional Features: Dual Fuel
Engine Type: 4 Stroke
Ignition System Type: recoil start
Tank Volume: 1.1 Gallons
Engine Displacement: 145 Cubic Centimeters
Total Power Outlets: 2
Engine Power Maximum: 5.5 Horsepower
Starting Wattage: 4000 Watts
Running Wattage: 3200 Watts
Frequency: 60 Hz
Runtime: 4 hours
Brand Name: Pulsar
Included Components: Inverter generator
Model Name: GD400BN
Model Number: GD400BN
UPC: 814726027803
Manufacturer: Pulsar
Manufacturer Part Number: GD400BN
Item Type Name: Inverter Generator
Warranty Description: 1 year manufacturer
Best Sellers Rank: #42,640 in Patio, Lawn & Garden (See Top 100 in Patio, Lawn & Garden) #146 in Outdoor Generators
ASIN: B0BHXLT5D9
Customer Reviews: 4.1 4.1 out of 5 stars (428) 4.1 out of 5 stars
Item Weight: 47.3 Pounds
Item Dimensions L x W x H: 18.9"L x 11.4"W x 17.3"H
Color: 4000w Dual Fuel Inverter Generator
Material Type: PVC
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Monday, Aug 10
Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Top Amazon Reviews
Style: 4000 Watts + Dual Fuel + Lightweight + R...
*Update 1/17/24* Still working great, still running it only on propane. We have been having single digit temperature weather and I have been able to get the generator started relatively easy to run the block heater on my truck. Truck is parked far enough from an outlet that it's easier to turn on the generator to get power by the truck that way. When power went out it was also great to have the electronic safe power that this provided. Starlink internet kept the home entertained, the generator ran other electronics, and propane kept us heated. Overall, still very happy with the generator. Have not run the generator on gas, only have ran mine on propane. Generator ships with all you need to get started, except the fuel source. Oil funnel is also used to drain the oil. Makes it very mess free for oil changes. Which I recommend changing after the first hour, since there's all kind of glitter in the first oil change. I then ran it another couple hours and changed again. Much cleaner this time. Holds 15 ounces of oil so a standard quart of oil can do two oil changes. In total I changed the oil three times during the break in before switching in full synthetic oil. It runs very quiet and stays pretty quiet under load. Quieter than a smaller 700 watt inverter generator I have and while not as fuel efficient it is still very economical with how much propane it uses. Revs up to produce power and has run my 10,000 btu window ac without issue. Ran a 5,000 btu and small .7 cubic foot microwave at the same time off of it. I love the size of this unit for the amount of power it produces. You can parallel two of them if you need more power. Really the only downsides I have would be no electric start, and the outlet selection is sparse. Got mine with coupon off of Amazon and have no regrets so far. Will update if anything negative happens
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Reviewed in the United States on August 27, 2023 by Gregory Robinson
Style: 4000 Watts + Dual Fuel + Lightweight + R...
Full disclosure- i've only owned this 4000W Duel Fuel generator for 3 weeks, but I've already had some good use from it and I've been very impressed thus far! I bought this to power my truck camper, and specifically my A/C on the truck camper when it's very hot. I had been carrying a 2000W Firman gas-only generator prior, and while I can run the A/C on the camper from that, it is nearly maxxed out when I do so I don't think I could run it for long if necessary, and there is the issue of carrying gas. The storage compartment of my camper requires laying the generator almost on its side to get it in/out of the compartment, and I've had gasoline leak into the compartment prior when doing so. No Bueno!! So I bought this generator, which is virtually the same size and weight as my Firman (which otherwise I've been very impressed with as well, btw) but allows me to operate from the on-board propane tanks located in my truck camper. It's clean and convenient to do so, and this generator runs pretty quietly given it can put out 3,200W continuously and 4,000 surge watts if necessary! It also produces a clean sine wave signal, so I don't have to worry about frying my cellphone, laptops, etc while charging. It is a few decibels louder than a Honda 2000i or 2200i, but close to 2 x's the output for a few decibels more. And at lighter loads on eco mode it is still very quiet (which is where it will operate most of the time I'm using it; less than 50% load.) I bought it and broke it in and tucked it away in the camper to take to the Sierra for one last skiing weekend, and lo and behold, it saved my butt when my diesel fuel gelled and I had to run the Pulsar for 3 hours to power my truck's block heater to get it started! My Firman could have handled the 700-800W draw as well, but again, nice to pull it out, hook it to the propane extension and fire it up. On that note, with propane I do need to give it a pull or two on choke before it starts on propane, but it runs perfectly once I do so. I'm at the 5 hour mark so I'll change the oil again tomorrow which should be the last maintenance I need for awhile. I really can't believe I found a propane generator with twice the capacity as my Firman 2k/1,600W gas generator for $500 (caught a sale on Amazon.) If my experience changes over time I'll update, but so far I'm very satisfied with this Pulsar Dual Fuel generator!
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Reviewed in the United States on April 13, 2024 Reviewed in the United States on April 13, 2024 by Larry M.
Style: 4000 Watts + Dual Fuel + Lightweight + R...
The generator worked every time I did the test run. When I actually tried to use it to charge up the batteries in a boon docking situation, it ran for 17 minutes. Then it quit. No spark. Pulsar has a help(less) line. When you need help they just tell you to take it someplace and they will send parts. Well, done. Still haven't received the parts or any notification that they are actually really sending them. Choose a generator that you can actually get serviced if it fails.
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Reviewed in the United States on May 19, 2026 by Patty Shackleton
Style: 4000 Watts + Dual Fuel + Lightweight + R...
I've had 4 suitcase generators before this one. Overall I am pleased after 6 mos of steady use of this one. BUT: loads of brass flex in the oil after break-in. I'd suggest change the oil after the first hour or less. No flex after break-in. Pull cord comes out 13" before it catches. That's OK in warm weather and when it's newer and starts well, but later on could be a prob. The round 30A plug is a bit of a nuisance to me. I had to buy an adapter to go to three regular 120V sockets. There is only one regular socket on the unit, but maybe they couldn't fit another in. Otherwise, it's hard to find a compact light weight unit with that many watts. And this one runs on propane as well ( I have collected all the brass fittings to tie it into my RV propane system, right after the regulator, starting with a 3/8 brass T, and incl a quick connect fitting with a built in valve, Camco 59853). A typical RV gas regulator has the correct pressure, so you don't need to use the one that comes with the generator. And its reasonably quiet for 145cc and 3200 running watts. It's a bit hard to start on propane, probably because of air in the hose at first. So start on gasoline, then turn the gas valve on at the propane tank (or in the line), then put the fuel switch on the generator to propane. It will cough a wee bit, but keep running.
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Reviewed in the United States on June 23, 2023 by James Barnes
Style: 4000 Watts + Dual Fuel + Lightweight + R...
My use case is a travel trailer hooked up to a Bluetti AC300 Solar Battery system. I don't have a large enough solar array (yet) on the RV to charge the batteries to full but enough solar to cover our normal usage inside (not counting things like A/C). So my intent for the generator is to charge the batteries in a few hours a day so we can make it through the night with some medical machines inside when there isn't shore power. The generator isn't too loud, but it is louder under load than we expected it to be. As for our use case, this claims 4000W peak, 3200 Continuous on Gas and 3600W peak / 2800 W on propane. I have only used it on Propane. We just took this setup out for our first trip. The AC300 lets me change what my "Grid" power is rated at (15A, 20A, 25A or 30A). Here is how this worked out: At 30A setting on the AC300 (connected to the 30A on the generator) the AC300 tries to pull 3000W. The Generator quits, never gets to the full power. In fact, the Generator quits right around 2200-2400W, cuts the power, and resets itself. At 25A setting on the AC300, it tries to pull 2500-2800 Watts. Theoretically, this generator can do that. It doesn't, still resets and cuts power. At 20A setting, the AC300 will pull around 2200-2400W. This works for about 5 minutes, then again the generator cuts power. At 15A, it pulls around 1800W. This is stable, while plugged into the 30A port. This will charge my batteries in a couple hours, but not if I'm running A/C. All in all, it does work, runs on propane (all I've tested), is not too expensive for a Dual Fuel, and I will likely purchase a second to run in Parallel which is a nice feature and I think would solve my issues. My electrical knowledge is limited, I'm not sure why I can't get the rated wattage, but it's getting us through our "boondocking" trip for now. Since I will need two of them though, at $500+ each, there is probably $1000 generators that would have been a better purchase for my use case.
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Reviewed in the United States on June 15, 2024 by Layne
Style: 4000 Watts + Dual Fuel + Lightweight + R...
I’d like this one you can go from gas to Propane with just a flick of a switch! Always starts on the second doesn’t use oil I just want a lot I would buy it again
Reviewed in the United States on June 13, 2026 by Kenneth Lesley
Style: 4000 Watts + Dual Fuel + Lightweight + R...
Packaging was perfect. Ships with right amount of oil, TT30R adapter, Spark Plug tool, handy screw in hose/funnel, Propane hose. There is less than an ounce of oil in it as they must do a spin test in the factory. Screwed the funnel and dumped in the oil. It came to the top but didn't flow out, so I called it good. Amazed that it started on second pull on gasoline. I idled it on ECO for a while and then ran it on various loads with a 1500 watt electric heater and my air compressor. It started my air compressor from ECO mode without showing and overload light which impressed me as that must be at least a 3,500 watt starting load. Some folks might not like it as it only has that one 30amp outlet and one 20amp. No USB ports. Watch it with that 20amp outlet as it seems to be a childproof one. Take your time inserting a plug, especially when cold. I will make a 30amp to 20 amp extension cord, so it will at least have 2 outlets. This is not a showstopper for me as I will just plug it into my 30amp RV cord and hope it starts the air conditioner. Too cold to test that right now. I've been very impressed by the build quality of the Chinese manufactured power equipment I have purchased in the last year. I think the 150cc engines in the various brands are all the same and probably just a redesign of the 80cc Yamaha inverter generator engine which they have produced in the same factory for 10 years or more. Bottom line: Nice generator - good value - should last for years with regular oil changes.
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Reviewed in the United States on December 1, 2023 by Willy J
Style: 4000 Watts + Dual Fuel + Lightweight + R...
I will start with some numbers: It started on the 8th pull on propane, I alternated between two pulls on choke and two pulls on run, on the 8th pull it started. I did bleed the air out of the propane hose before trying to start it, idle was turned Off and it ran unexpectedly smooth and quiet I have to admit that was a pleasant surprise. Sound level no load was 58 to 59 decibels 20 ft away (high speed), it was sitting on concrete. It ran on idle at 3,240 RPMs and 3,860 RPMs at high speed no load. I let it run for about 10 minutes before putting a load on it, first load a heater running at1,380 Watts second load another heater running at 860 Watts. So about 2,240 w at 120 volts, I did not have an adapter during the test to use the 30 amp outlet so I had to run the test out of the 20 amp outlet, I was using about 18.6 amps and I was starting to feel uncomfortable with that number, the outlet was warm and the spades on the extension were hot to the touch so I did not add any more loads, I recommend treating the 20 amp outlet as a 15 amp max outlet to avoid a problem. The engine RPM with the two loads was between 4,260 and 4,280 RPMs, I ran the engine a total of 25 minutes. Full disclosure, I installed an hour and RPM meter myself that's where I got the numbers from, I used a phone app to measure decibels UPDATE: Feb 4 2025. It started cold on 3rd pull. I now have the 30 amp adapter that I needed and I connected to a 50' extension and back to a 3 outlet - 20 amp connector, I installed 3 Kill a Watt meters and a heater to each one of the 20 amp outlets, I used different heat settings to try different loads, At ~2,720 watts the RPM's were ~4,580, at ~3,100 watts* the RPM's were ~4,610. The generator ran smooth and the green indicator was solid, it ran about 5 minutes at the max load no problems on Propane. * The RPM.s and wattage were variables and I used an average. I had a one hour timer for running time, I removed all loads at the 50 min mark and set the generator on idle speed and let it cool down. I turned it off waited 5 minutes and it started on one pull, turned it off again waited another 5 and it started on the first pull again. I changed the oil while it was hot and used 10W30 full synthetic. I know 1.1 hours prove nothing as far as longevity but it met and slightly surpassed manufacturers specs. 118.7 Volts at full load. 59.9 Hertz at full load 26.12 Amps at full load I hope this information is found helpful.
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Reviewed in the United States on January 30, 2025 by Javier