I tend to agree. With the auxiliary battery, wiring, controller and relays, heavy duty starter motor, etc., ESS adds a lot of complexity, mass and cost. Also, there is more opportunity for failures, as many of you have experienced. I have noticed that on many occasions, my ESS is "not ready", so the system has had many "missed" opportunities to save our planet. I think the benefit towards reduction of emissions (carbon footprint) is minimal. For me, the emission reduction is neglectable because my idle time is nil. I look at my Jeep as a tool to get from A to B. Sitting "idling" does not get the job done. That is why you will never see me at the Starbucks drive through. Besides, I don't drink coffee.Cool test. Thats some serious commitment. But I thought the goal of ESS was to reduce idling emissions. I was never under the assumption it was for saving mpg’s.