with my experince they work great. I am not sayin that info is right or wrong but i would call up xstatic and see what they say. I mean they of course they are gonna deny it. But atleast hear there side. But a good question would be if they are copy cats where didi this come from.http://http://www.batcap.net/8400spec.htm
Most people say caps dont do shit. I had a 1 farad stinger and it sucked. I found a batcap 150 and I love it, seems to work similar to a small battery. Took care of my dimming and voltage drop, but you will get more negative responses on here. Not everyone has the room for or wants the added weight of a second battery