When purchasing a mobile phone, I bought one that charges by connecting with a portable USB cable from the car's accessory socket, so I wanted another socket when using it and purchased it. But I think that using this is limited only when there is a power outage or disaster, so I do not want it to be very active.
When inserting the power plug of the car navigation system, the depth is insufficient and falls off with a little vibration. Is it about 5 mm more? If it is deep it stops exactly. It stops exactly to the 4 bought before.