I have placed my 04 645ci into storage for the winter and was looking for advice on maintaining the battery to avoid having to replace it in the spring. I am able (and do) start and move the car approx. once a week and try to start and let the car run as much as possible but there are times that the car sits for 4-6 days without any activity. The garage is somewhat heated but here in Ohio it gets extremely cold in the evenings and I am worried about loosing the battery. Should I disconnect the battery or simply keep doing what I'm doing? Trying to avoid purchasing a trickle charger but if I have to purchase a trickle charger are there any recommendations on which type to purchase.
Lexus SC 300