So I have a 2012 Toyota Highlander (yeah, I know…but paid cash and had/have good reasons for needing that vehicle. No face punches please, and I can defend the purchase if anybody wants to know.) This SUV was purchased in October, 2011, so right now is going through its fourth winter. (11-12, 12-13, 13-14, and now 14-15.) It has the OEM battery in it, and I've had no problems. Mileage is 19,700, and vehicle has always been used in four-season climates, not in any hot weather places like Florida. I always have the CD player or radio on, but turn it off, along with fan, etc, when I park the car. This winter I am making almost monthly trips to upstate NY, Vermont, and Quebec, and don't want to get stuck with a dead battery, as it would be difficult to be stranded somewhere, especially in a French-speaking area. My plan is to get the battery tested, and definitely buy a new one if the load tester is not solidly in the green. But do you think I should just buy a new, good quality battery regardless? Online research has not given me a definitive answer.