Mine did not work on 5 different cars, so I don't see the point (BMW, GM, Lexus, Acura, Audi). If the power needs to be kept up hook up a clean power supply to the terminals (not a jump pack nor battery charger).
For Hondas, people don't use this site ? https://mygarage.honda.com/s/radio-nav-code It's been around for a couple decades. I had to use it for my old '99 Accord and it worked fine.
I did my mom's Acura and she didn't have the code. We used some website and now I had her tape the code to her owner's manual. Seems dumb if Honda still does that.
Mine did not work on 5 different cars, so I don't see the point (BMW, GM, Lexus, Acura, Audi). If the power needs to be kept up hook up a clean power supply to the terminals (not a jump pack nor battery charger).