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I am looking into getting a batcap 8400 and I was wondering if I can charge it off my battery bank. I have three HC2400’s (One under the hood and the other two in the trunk) and I am looking at a batcap 8400. I am a daily driver so the batcap will only be on during sound offs. I compete is Advance n/w so voltage is critical for me and I was also wanting to know if a 8400 will help me with voltage problems. Has anyone used them before and can give me some insight? Oh just in case you need to know I am running 2 rockford T4000’s