I had been using a wall connector for about 2 years but it recently failed (red light on boot up and a reset would not clear). I had an electrician who has installed a number of these trouble shoot the thing, but they could not resolve the issue and told me there was no way to repair the unit. I also had a ranger look at the unit a few months ago when it would still reset and he told me that replacement was the only option when it finally failed completely. I had the electrician install a NEMA 14-50 and am now using my mobile connector to charge. Has anyone had reliability problems using the mobile connector when left plugged in and seldom removed? I now have a $550 piece of junk in my garage (unfortunately I didn’t order the HPWC with the car, so the warranty was only for 12 months) and am wondering if I should expect to need another mobile connector in 2 years. Why should something so relatively simple be so expensive and non repairable?