I bought and am using a "Lion Energy Safari Solar Generator" to use as a heavy-duty UPS, and it almost but doesn't quite meet my needs. It works fine, except about every 15 minutes a quite loud cooling fan turns on, to cool the inverters I suspect. This is bothersome since my intent to to keep my WiFi and computer and TV functional with this particular setup. Does the Pila have a similar cooling fan, and if so, is it audible?

Also, FWIW, it appears your web page pricing is slightly cheaper per kWh than the Lion, so good on you.