The ALLPOWERS R4000 Portable Power Supply is a simple mobile battery with a high capacity LifeFO4 battery (lithium iron phosphate battery). It has a large output of 4000W, so it goes without saying that it is compatible with many household appliances for outdoor use. Air conditioners , electric stoves, electric kettles, electric blankets, washing machines, hair dryers, TVs... We are compatible with all home appliances, so you can use them for hours or more as a countermeasure against power outages. Massu. In recent years, disasters such as typhoon, heavy rain, heavy snow, flood, earthquake,CPAP，RV，and tsunami have become more and more frequent, but with this ALLPOWERS R4000 portable power supply, you can maintain your daily life even if there is a power outage. possible.