Ya I am concerned about VNSZNR too. I have bought stuff from Jenny Wu but for some reason now I just can't get Jenny to tell me for sure if they are in usa or not. So I'm thinking about giving VNSZNR even if I hate Amazon. I'm looking for 280 Ah LifePO4 batteries to expland my current set. Not sure yet what I want to do. I'll let you know. Anyone else experience with VNSZNR?