Medium quality compared to the equivalent from ctek. It has a cover that does not lock well and opens by itself.

High quality, like anything Noco. The connection socket is tightly covered with a cap when not in use. When the charger is connected, the two connectors lock with a hook that clicks when fully engaged. On mine, it doesn't click unless I use a lot of force. Good trick, for charging the battery without removing covers, seats, etc.