vetkilr01 Posted December 16, 2013 Report Share Posted December 16, 2013 I really don't see why a alt is needed for a 4K system? 2 batteries and a big batt up front with the Big three should be enough to keep up? I am running 4 group 31's in the trunk on a 7k with the big three done and hold voltage great.Now my stock alt is 120 or 140 amps though, but still don't see why you couldn't try batts first and see if voltage holds. Link to comment Share on other sites More sharing options...
Kranny Posted December 16, 2013 Report Share Posted December 16, 2013 I really don't see why a alt is needed for a 4K system? 2 batteries and a big batt up front with the Big three should be enough to keep up? I am running 4 group 31's in the trunk on a 7k with the big three done and hold voltage great.Now my stock alt is 120 or 140 amps though, but still don't see why you couldn't try batts first and see if voltage holds. because you need to create power to hold voltage. batteries just store power, not create it. 4k is a theoretical 400 amps of potential current that can be drawn. 100 amp alt, will leave like 350 amps to be drawn from the batts. hella drop, yo Link to comment Share on other sites More sharing options...
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