MXR4000GT

(Updated review:) I am changing my review to 5 stars as after correspondence with MaxpeedingRods and going through their checks they have stood up and done what’s right and stood behind their product by replacing our Generator. I believe that there was a fluke issue with the original one and it originally worked 100% only to later loose the electronic start function. I have no reason to believe that this is a systemic issue and think that it was just our luck of the draw to have that issue. The new generator works flawlessly. When a company like MaxpeedingRods stands behind their product we can tell that they are a company that we would like to continue to do business with and recommend their products to our family and friends. For full disclosure I paid for the first generator out of pocket full price and with the issue and going through their resolution they replaced it. Knowing this you can feel safe in spending money with them for an investment such as this. Thank you MaxpeedingRods! (Original review for reference:) I am going to say it’s a wonderful product with at this point questionable support. I am going through their support for the last week with limited effective responses. If this changes I will change my review to 5 stars but at this point the electric start has failed and they are sending me thru the same tests multiple times. When it arrived everything worked flawlessly and now only the electronic start functions do not work and I eagerly want a resolution but so far I’m just getting scripted responses from the app at first and now via email. If they help me resolve this it will truly be a quality generator however the support has to stand up and provide true assistance for this to happen. I believe they can if they are willing. (Final thoughts) as you can tell if you read everything they did stand behind their product and I once again commend them for it.

We purchased the MaXpeedingrods 4000 watt dual fuel inverter generator in June of 20025 specifically for camping and fill in at home in winter when the power occasionally goes out. The generator had performed fine through the summer and other than being a bit louder than the Honda we also have, it did well through the summer. Now came winter of 2025, we store the generator in the garage that gets down to about 40 degrees when it is below freezing. Our power went out in December and when I went to start the generator the battery was dead. After much research and sweat, I found you are unable to start the generator using the pull cord when there is no electrical power, What good is it, I don't know. So I have spent a lot of time trying to recharge the battery with no success. I have spent even more time tying to find a replacement battery. I still have not been able to contact anyone that can help me. I can see the battery inside the case. I have not tried getting it out, since it looks like it will take some doing. But I can see that it is a very small battery with a specific connection coming out of it that connects to the starting mechanism on the generator. So basically I have a useless generator that has roughly 30 hrs on it. I could pack around a larger battery that would set next to the generator and connect it to make the generator function, but that is definitely not ideal. I would have a much better review if the battery would not have went bad so quickly and then being unable to replace it.

As a bare generator it worked well. Powered my 12k BTU portable AC, fridge, some electronics and a blower fan with a 20lb propane tank for over 12 hours no hiccups. The major issue was complete loss of bluetooth functionality, the app and even the onboard lcd screen displaying usage % etc. This left me in a bit of a limbo with hurricane beryl as I wasn’t sure how it would fare overnight. Luckily we got power back in 16 hours. I seriously needed bluetooth to monitor it from the other side of the house while it was on the front porch. It was never exposed to any rain. I emailed [email protected] and exchanged 4 emails. One asked to send them a video of the unit not displaying the bluetooth LED which I did. After that I was told to wait 1-2 business days and one week later I have still not heard a response. Even with the $200 coupon this unit sits at a pricey $899. At that price point the main reason I purchased it was limited availability of other bluetooth-enabled generators. Really you are limited to this one, the MXR4000, Honda 2200i, Ecoflo and Ryobi. Apart from the other MXR none of them are rated for more than 3000 watts. So I bought this one. Now if bluetooth is unreliable and nonfunctional, at $899 you can most definitely proceed with buying a much more powerful inverter generator lacking bluetooth well within 6000W territory. I will update the review and rating once I hear a final usable solution from MXR. For now, I find 3 stars generous simply as it kept us reasonably comfortable with a cold fridge for 14 hours (which one can argue any number of other generators could have done and more at $899).. UPDATE: Customer service was generous in offering a partial refund for the bluetooth malfunction to be used towards the bluetooth surge plug. Happy with their service, increased to 5 stars. They offered to replace it but since it functions as a regular generator I opted for a bluetooth plug and only lose the remote start capability which is fine

I needed a generator for a small off grid cabin to charge up the lithium battery pack and I decided to go with the dual fuel MXR4000GT and it has been great so far. Starts up easily on both gasoline and propane even in cold temperatures. I saw a few people mentioning theirs leaks fuel (user error!) that happens when you fill the tank beyond the red bar at the top of the tank... Due to the unit being compatible with a fuel transfer pump there is an overflow to avoid pressurizing the fuel system. Now the 1.1gallon tank is a bit on the small side and if you are always running it like I am (60-85% load) you will only get 2-3hrs on the fuel tank without the fuel transfer pump addon. But that's why I opted for the dual fuel version so that I can run it on 30lb propane tanks with the same 60-85% load I'm getting around 18hrs per tank. I did the effeciency calculations: 1.1gallons of 91 produced 5.5kwh which is 14.8% effeciency and a 30lb propane tank produced 33.5kwh which is 17.8% effeciency. So definitely better running it on propane. It's also pretty quiet depending on the load with it only getting relatively loud above 2000w. In terms of max power output it will hold 3300w @119v charging batteries on both gasoline or propane at 700ft AMSL pushing even slightly beyond that bogs down the engine before tripping the overload. But as always for longevity continues loads like battery charging should be kept below 85% or ~2700w which this unit does happily. After the 25hr break in period on dyno oil I used amsoil 4 stroke synthetic 10w-30 which made a dramatic difference in cold start performance for those using this unit in cold regions. Overall I'm happy with the unit considering the price and features compared to a 3x as expensive Honda with similar running watts. It comes with a 2 year warranty as well. And weighs just 50lbs so it's easy to move around compared to similar spec generators

Product does not charge its own battery, battery slowly discharges while running until display and Bluetooth stops working. Generator seems to run ok and is quite, Bluetooth was nice when it was working but it would not restart using Bluetooth after it was shut down via Bluetooth. Cold starting using the pull cord was not as great as some reviews stated at -20C would not start after several pulls needed to be warmed up then started first pull. Hoping this is just a defective unit and the vendor will ship a new one. But they have not responded to my inquiry. I will start return process through Amazon if they don’t respond.

Almost the same size and weight of my Honda EU2000i. It seems quieter to me than the Honda. Started on gas with first push of the button. Easily starts my camper air conditioner that the Honda wouldn't. Contrary to another review, bluetooth starting does NOT require any wifi or cellular service. I put my phone in airplane mode and just bluetooth and it starts and stops perfectly with the app. Tested it on propane and it also worked flawlessly. Will update if things change but so far it's very impressive.

The inverter would no longer run I contacted the supplier and they send an other new unit I paid for shipping only Great product

Works ok but CO detector makes it impossible to use in generator shed