When?

[<BatteryBoy>]

When do you need to get a battery to power your system? I'm about to buy a new system and I want to know if I need to add in a battery and setup to the price list. So, how much crap can you run off your regular car battery til you need to separate them?

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[ramos 5,000+ posts]

What do you plan on running ? An extra battery may hurt instead of helping. Adding an extra battery puts alot more strain on the alternator.

 

[<BatteryBoy>]

I'm going to have 12" Sub, 350Amp, and a newer head unit...I'm just curious as to how much more I'd have to add to justify getting a second battery...or second power source..

 

[ramos 5,000+ posts]

Alot more

Unless you plan on upgrading your alternator. Which means big time $$$. I wouldn't worry about. If you have trouble with your lights dimming. Add a cap or two. If you really want a battery. Start by replacing the battery under the hood first. In my daily driver I'm running two punch hx2's off a bd1000.1 and a power800.4 running my focal comps in the front and midbasses in the rear. All with the regular factory 120 alternator. The only thing I did was upgrade the battery under the hood. I also upgrade the factory wiring on the alternator. I changed this to 4 gauge instead of the factory 8 gauge.