.....and it sounds like ....... a generator!
Imagine an Motorhome / RV type Honda generator .... well suppressed .... but running at a constant speed with surprising low revs .... so a bit alien in a car.
People standing about 10 feet away didn't know it was on.
Interestingly I was able to force the Rex on even though the battery was at 88% full. There is a settings option for "preserve battery level" or something like that, just tick that box and the Rex starts up.
It feels loud (when stationary) because there is absolutely no noise from anything else, but in reality its no louder than a normal car engine.
Imagine an Motorhome / RV type Honda generator .... well suppressed .... but running at a constant speed with surprising low revs .... so a bit alien in a car.
People standing about 10 feet away didn't know it was on.
Interestingly I was able to force the Rex on even though the battery was at 88% full. There is a settings option for "preserve battery level" or something like that, just tick that box and the Rex starts up.
It feels loud (when stationary) because there is absolutely no noise from anything else, but in reality its no louder than a normal car engine.