Base on my knowledge the 12 & 24 220VAC 1500W rated power 3500W peak powerI found out that it cannot run the 220VC 1000W 50/60hz frequency 4" angle grinder because of that I believe the rated watt power below 1500W, moreover I opened one HF inverter the SPWM DRIVER MODULE I found out the code it is 800W 20245013 photo attach below