Hi guys, ok I bought about 2 weeks ago a hole new sound system like from scratch, a 0 Gauge wiring kit and a 9000 mono block powerBass amp (competition grade) and then 2x targa xxx subwoofers (competition grade) and then an spl box with a maze inside. So my question is now I want to get my system running, I installed everything, its in my car already but its not running yet because the car I have uses a 615c battery and it is so small it is 35ah, so I want an second battery but I want to use it seperate I want the car to run off its own battery and the sound of its own, no paralel or anything, each one for its perpouse, so I was thinking about the kinetik hc800 with is also a 35 ah but its made for sound, its obviously a bit more expencive than a normal battery but who cares if it does its job then why not??? Or doesn't it??? See my question now is I want to know if I play my sound system on 1 hc800 how long will it be able to play for 30 second or 10 min an hour, how much about??? Because I have no problem in taking the bat out and recharge it but I dnt wana play 30 second and recharge if you understand so otherwise I am looking at the royal battery with is a lot larger that means it can play longer but its not for sound so its not as good as the hc800 but it will last longer but now I don't want to play 20 minuts and charge battery for 4 hours and then the bill at the end of the month is shocking, so can you also please tell me how much does it cost to simply charge an battery, thanks your help will be appreciated!!!

 

Why not install an isolator with it? That way it will charge off the alternator but will not be connected in parallel with the other battery. There's a couple of other considerations you'll have to take into account but if this makes sense to you, dig a little deeper into it.

 

There is no point in having a separate power system for your stereo. What is the exact model number of your amp?