I'm the person who suggested the $15 solution. Thanks for the results posting. Too bad you can't quantify how much it improved your situation.
Throw another $15 or maybe a 3 phase reactor at your problem...
If you set the temperatures like DThames suggested, how long are the on and off cycles?
I'm am doing the same thing with a Craigslist 15 cu ft chest freezer. Inkbird temp controller. Contactor. (Don't buy a used freezer, refrigerator off Craigslist. There will be problems.)
Aug. 16th, 2021 the average day temp at the below location was 81.8F. Probably a few stations closer to your conditions, location.
Water volume will be displaced by battery. < 15 gal.
Heat will be...
Maybe one of these will fix the problem.
Midea spikes time based. Every 32(?)minutes. Interesting. Midea AC taking an average of watts used over the last 30 minutes and then deciding if it needs to ramp up the compressor for a couple of minutes?
It's the first non inverter AC on that list. It's right after the Inverter LGs with a 'V'(variable) in the model name. The high power factor but relatively lower efficiency of that non inverter AC, seems to be...
I believe the spike is caused when the AC needs to speed up in order to get enough lubricating oil to circulate after the compressor has been running at a lower speed(< 300? watts) for a while. With summer coming to an end, those spikes should become more frequent. The spikes with mine only...
I wish somebody with an oscilloscope would try that capacitor idea. Doing that might cause some bad harmonics. If there aren't any problems, I have an idea that can possibly greatly improve the power factor of inverter ACs.
650 watts is the highest I've seen. The lowest is around 570 watts when it isn't working very hard. Just a guess, average around 630-640 watts. I first used the LG and then the Midea to cool my 1450 sq. ft. FL house, all grid powered.
ACs annual energy usage can be compared here...
"I don't suppose you have PF numbers for the LG inverter window AC units?"
I've got a feeling they are all about the same. I also have a LG-lw8019er window AC. It has a power factor of 0.99. Also, its compressor doesn't start until a couple of minutes after the fan motors start.