I’m writing to see if anyone has any input on what I may not be considering and/or to get feedback from Bluetti on issue #1 below. The second issue is mostly just a complaint from being disappointed based on experience with other inverters.
I’m now on my second AC300 unit. The first unit was returned and replaced under warranty due to the dreaded 008 overvolt protection issue others have reported.
Since the replacement, I’ve been pretty happy with the unit. I no longer seem to have the WiFi issues that many others have reported. There is a strange issue where one battery is behind on firmware, yet I can’t upgrade it due to no upgraded firmware being available. This isn’t one of the issues, just an observation.
I primary use this unit as for boondocking in my RV. I have a 50 amp RV with a dog bone to 30 amp to plug the RV into the AC300. I understand electricity enough to know what I can run. I also understand compressors and their demand for energy to start. I also understand at 3000 watt, we are really limited to 25 amps @ 120 volts even though there is a 30 amp outlet on the unit (3600 watts @ 120)
NOTE: The batteries were between 75%-80% charge, and had both solar and shore power, when this happened (twice)
I have a Softstart on my RV which now gives me confidence that either AC will start on the AC300. Even with the Softstart, I can’t start both, which is completely fine with me. (15000 BTU and 13500 BTU).
One problem I’m having is the 15,000 BTU AC, with very few other items running, causes the AC300 to just stop working, but also doesn’t throw any errors in the logs that I over loaded the inverter. The AC runs for 1 to 1.5 hours never has to surge a second time since I set the thermostat set point way lower than the ambient temp.
I diligently monitored the unit and witnessed that I was always under 3000 watt with little possibility of a surge, to my knowledge. The first test I was admittedly around 2700 watts. The second test I rarely went over 1900 watts. I am extremely confident nothing caused the load to go above 3000 watts for any period of time. (I had the breaker off to anything else that could have surged including refrigerator)
A) The unit isn’t logging any error that I pushed the inverter too hard, which it always does when I know I made a mistake
B) The unit acts as if it were overloaded, shuts itself down for a minute or so then restarts. Everything works again for the same duration without any manual intervention.
This is more of a complaint than an issue, however, I’m very disappointed in the tolerance on the peak wattage. I have a Magnum 1212 on my house lead acid pack that handles peak/surges magnitudes better than this unit.
Had I realized the tolerance was so poor, I would have questioned even buying the unit. This is one of the only units with a 30amp RV outlet I know on the market , which made it extremely appealing.
In my current setup I can run ~30 minutes on my Magnum 1212 slightly over loaded. I can only run 2 minutes on this one. Without getting into all of the other peak tiers on each unit and the lack of tolerance on the AC300, it is just something to note.
I’m not sure if the wiring in the equipment simply can’t handle the peaks, or if the manufacturer is just just being overly cautious. I would have happily paid the extra few hundred to have wiring that would support higher peak tolerance given the application I’m using the unit for.
I suspect my random outages are due to yet another firmware problem with the AC300, but really am interested in what people think based on my description.