I never hooked it up in my own car one of my buddys has it but it works great as a 2nd battery.

I built a fiberglass sub box with 2 12" subs, a tv, an xbox 360, and 2 speakers. The kenetik HC600 powers all of that with no problems at all. Great product.

I only have one and it kept voltage drop to a minimum no light dimming at 2000w RMS but you have to keep it charged my only problem was the screws aka terminals that came with it did not screw down far enough to make sure the wire rings had a good connection to the battery I thought it was okay at first but after playing for a while the battery was fire hot had to use a couple washers but fixed the problem

Looking for a second battery with not much space, then this product is what you need. I had light dimming in my 2004 MB but after installing the HC 600 that all went away and my sound got better. For the size and great price I would recommend.

works good, i dont know if it was the right one for me though, so i got a yellow top..after i got his one cuz my lights where still dimming. now they dont hardly dim at all..and i have a 1000.1 amp and 350.4 both are kickers.