second battery and alt??
Printed From: the12volt.com
Forum Name: Car Audio
Forum Discription: Car Stereos, Amplifiers, Crossovers, Processors, Speakers, Subwoofers, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=1474
Printed Date: September 11, 2025 at 2:48 PM
Topic: second battery and alt??
Posted By: shinobi_magic
Subject: second battery and alt??
Date Posted: June 24, 2002 at 8:00 PM
okay i want to do an independent battery and alt setup for my system, i know i need to do a double pully setup, but i already have an open pully on my ac pully (i do not know why was like that when i bought it) would that be a good pully to use or not, thanks for the help guys
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what i can't hear you, i need a bigger stereo my brother in japan can't hear it
Replies:
Posted By: GlassWolf
Date Posted: June 26, 2002 at 6:30 PM
Look at perhaps a 150 to 200 ampere alternator by a company such as Lestech. run that to an isolator then to both your main car battery, for which I'd use an Interstate MegaTron, and to a second battery, for which I'd go with a Deep Cycle type of battery in the 1000
CCA range. Run all of this, *including ground wires* with either 4ga. or 1/0ga. cable.
From the Deep Cycle battery, go to a parallel-block of 3 1farad capacitors, then to a power distrobution block, where you can drop to 8-ga. cable to each amplifier.
Use a circuit breaker and/or fuse about 12" from each battery, in a housing (ceramic or glass fuse) by someone like PG, Esoteric, Stinger, or what have you. Use one of the smaller-fuse blocks between the Deep Cycle and amps, fusing each amplifier as well.
Ground all devices as close to that individual component as possible, to eliminate interference/noise.
That's about how I would(did, in fact) run the power for a decent competition car.
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-GlassWolf
Pioneer Stage-4, Orion, DynAudio, Fi
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