Plug one of those Anker cigarette lighter USB adapters into lighter socket, put a load on it, and tune through the 2m amateur radio band to see if there's any noise. That's the problem I have with a fairly expensive adapter I bought a few years ago.
I've noticed that Anker products are consistently well-made.As a follow-up, I bought an Anker PowerDrive III 2-port 36 watt car charger. It seems to be well made. So far, I've not detected that it's generating an RFI in the 2m amateur radio band. The springs behind the negative terminals on the side of the charger must be very stiff (a good thing) because it's difficult to insert in the lighter socket on my Ford Expedition (not a good thing).
I agree 100%. I bought a few of Anker's PowerCore+ 26800 and PowerPort+1 portable power/chargers. They're incredible!Historically, Anker products have always been excellent quality. I have mostly used 120v and 12v power supplies and have never had a problem. They deliver as advertised. While they're a little higher in cost, I find them worth every penny.