I have a 2017 Gen2 Premier Volt which I acquired in November. I use the included destination charger each night, usual stuff. What's changed is the temperature.(April) I live in Charlotte, NC and in my garage its currently 89 degrees. I was quite surprised when I heard for the first time fans running, not the usual pin ball activity you hear now and then. I opened the hood and there are two fans running. I get that this is "by design". My question is more about, do the fans run all the time during normal charging if temp is > then x or do they come on and off as needed. Anything else to consider or just move along.. let it do its thing?