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Rhett Fifer photo
Poland, Warsaw
1 Level
722 Review
28 Karma

Review on ๐Ÿ’ก Cumsetzer 3000W 48V Power Inverter: Pure Sine Wave, 110v 120v Output, LCD Display by Rhett Fifer

Revainrating 5 out of 5

You get a good spark if not, pre-charge resistor

I got this to make a solar powered UPS. If nothing is connected, its standby power fluctuates between 4 and 6 watts. If you stay below 1000W, it will take some time for the fan to turn on. I checked with a shrink gun at low power. I added a series resistor switch which I use to charge the inverter's capacitors before closing the main battery switch to the inverter. The highest loads I tested were only 1500W and the fan kicked on immediately. There were a lot of warnings in the manual about overvoltage and power factor, so don't worry.

Pros
  • Brilliantly made
Cons
  • Infinitely sluggish