[Whyman]

Have a look on the CTEK website to see the best one for your car and battery type.

To connect it you need to connect the positive - red lead to the positive battery terminal also with a large red wire coming from it and the negative black lead to a good earth position on the vehicle. Both need to make good metal to metal contact. Once you are happy with this connect to the mains.

To disconnect unplug from the mains before disconnecting the two lead from the charger.

Best of luck.