Ok I need some help. I've killed one 2 many car batteries from my damned sound system. I need to stop adding more speakers and sh*t. Anyway I was wondering about how people put extra car batteries in their trunk/hatch to have more power for their system? What would I need to do to make this work for me? I need to do this so I stop buying batteries. Anyway any help is greatly appreciated.
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First off, do you have a good capacitor that can handle the power? Secondly, do you have an aftermarket HIGH-OUTPUT alternator? If you add a second battery, it's fine and dandy, but if you're still sucking more juice than the alternator can put back into the battery, you're doing no good.- Brian Meissen
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yea you'll need to get a high output alternator, and a story about those optimas, my friend has a yellow top in his 86? thunderbird, and his alternator went out but he drove on JUST the battery for a half hour of city driving, so invest in one of those and see how that works out.
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Member with Invalid Email Address
- March 25th, 2005
- 1806
- Steve Hayes
- '97 Grand Prix GTP
- Saraland AL/Lapeer MI
- Sell car and home audio
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a second battery only works when teh engine is off, if the battery is dieing your alternator is no good, and not charging,get a real high output alternator not a reman beefed up pos that is like a band aid on a broke condom
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The Joke Master
- June 30th, 2005
- 8513
- Jasen
- Retiring the 80Z project and Moving on
- Grand Rapids
- Mechanical Designer
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A friend of mine has been designing and building competition systems for 15 years. I know his setup I believe has 2 deep cycle marine batteries in the trunk. No special alternator (99 Grand Prix) I don't think and if memory serves he's hit 168 db several times. What I am wondering, is your alternator all together bad? It depends on what you are running of course but I'd still check that.
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Member with Invalid Email Address
- March 25th, 2005
- 1806
- Steve Hayes
- '97 Grand Prix GTP
- Saraland AL/Lapeer MI
- Sell car and home audio
- Send PM
Originally posted by Orange TerrorA friend of mine has been designing and building competition systems for 15 years. I know his setup I believe has 2 deep cycle marine batteries in the trunk. No special alternator (99 Grand Prix) I don't think and if memory serves he's hit 168 db several times. What I am wondering, is your alternator all together bad? It depends on what you are running of course but I'd still check that.
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The Joke Master
- June 30th, 2005
- 8513
- Jasen
- Retiring the 80Z project and Moving on
- Grand Rapids
- Mechanical Designer
- Send PM
Originally posted by archemedesI was a competitor, and had to run 2 alternators (I had a battery bank but they were for competition only they were disconnected when on the street) the stock alternator in a GP won't handle too much extra (it's not real big)
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