I have a 2002 Chevrolet trailblazer LT which I leave at my caribbean home for 7 to 8 months a year. Up till now, I have had someone run my SUV on a weekly basis, Someone told me to put a side battery disconnect on the battery and that when I returned to my SUV, all I would have to do is turn the switch t on and my car would start. Any thoughts and recommendations on what to buy? Thanks!