hello lvc 
in my trunk i currently have a hifonics 1600rms amp with a kicker l7 12 in about a week ill be adding another sub
this is being powered by a kinetik hc1400
so the bottom line is
i want to run another battery parralle (kinetik hc800) my buddys selling it to me dirt cheap! i want to know if adding this battery will do more harm than good on a stock alternator
01 lincoln ls v6
0 gauge
and i want to add another amp for mids and highs

in my trunk i currently have a hifonics 1600rms amp with a kicker l7 12 in about a week ill be adding another sub
this is being powered by a kinetik hc1400
so the bottom line is
i want to run another battery parralle (kinetik hc800) my buddys selling it to me dirt cheap! i want to know if adding this battery will do more harm than good on a stock alternator
01 lincoln ls v6
0 gauge
and i want to add another amp for mids and highs