I hate to say it, because, you know, nazi, but I had excellent customer service from Tesla for my power walls. I bought 3 of them several years back, a couple o

I hate to say it, because, you know, nazi, but I had excellent customer service from Tesla for my power walls. I bought 3 of them several years back, a couple of years after the v2's came out, and one of them failed pretty quickly. They had a replacement unit out and fitted within a few days. Since then they've worked perfectly.