I have a couple of vehicles that I have at a second home in Colorado that I think I need to keep a trickle charger on the batteries when I'm not there. Any suggestions on the best and/or safest ones that will be mostly unattended.
I have three CTEK battery chargers and could not recommend them highly enough. My Mustang has a 2014 battery in it that is still going strong and my Cobra has a battery from 2016 in it that is also still working great. They make several different models but this is the one that I have and I love it: