peterwu1234

I just bought a ctek 3300 battery charger as I m leaving the country for a month. My questions are: 1). should I plug the ctek3300 to the front hood battery or the rear trunk battery? 2). if it is the rear battery, do the lights in the trunk stay on if I don't close it(will be for a month)? 3). how do I feed the power cable/wire to the battery if I would close the trunk??, many thanks in advance! ps:my car is a 2011 sl550.

kingnash

install to rear battery and close truck with wire sticking out, put the ctek on winter mode