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 M¢25  Funded By Mahalo ? |  August 26, 2009 01:41 PM

Is it OK to put a second car battery inside the back seat of my truck for my system?

I have a 07 Mitsubishi raider 4 door. The battery would be right behind the drivers seat. My reasoning behind it is i have a true 1000w rms alpine amp, a 15 kicker l7, and a 3 farad power cap. I figured because i have a truck that i might have a bigger alternator but rather then take the risk i thought i would ask. (p.s i was gonna use a regular old car battery i have laying around that is 12v and works fine:

Source: http://www.i80equipment.com/tree-trucks.shtml
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August 26, 2009 03:25 PM
Operating a spare car battery behind your seat sounds dangerous. When OEMs do this in trunks and passenger compartments, the battery is contained within its own compartment that is ventilated to the outside.

Even ignoring the obvious danger of deadly amperage where someone may accidentally come into contact...you've got acid solution, hydrogen gas...all great tools for inflicting bodily harm.

A battery relocation kit and/or a sealed (non-spillable) battery may be a safer option. Optima's line of "Yellow Top" batteries have plenty of cranking amps to start your truck, reserve power & capacity to drive all your electronics, and it's an AGM (glass-mat) non-spillable system. They charge/convert better than your older battery with lead plates and electrolyte solution. AGM batteries will lose 4-6% of energy to heat, versus 10-20% in wet batteries.

They're also smaller, lighter, and are able to be shipped/transported much easier than other battery types.

I don't understand the URL you posted with the question. Is that just spam to advertise your web site?
Source(s):
http://www.optimabatteries.com/optima_products/yellowtop/specs.php
http://classictrucks.automotive.com/99553/0902clt-battery-relocation-kit-in...

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August 26, 2009 02:46 PM
There is no reason why you couldn't do this, though I'm not sure much benefit will really come from it, though it would prepare you for future upgrades if you plan on it. The fact that you have a 3 farad cap should limit any major pull on your battery/alternator and should provide enough extra power to handle a 1000w amp without any issue.

When I had my 1000w amp running with a 1 farad cap I never heard a decrease in sound quality due to lack of power (also never saw issues with dimming of ligts etc) and my cars battery lasted 2 years, in cold Michigan weather, with that system before I sold the car (a friend owned a shop and would check the health of the battery often so I know it never had issues).
Source(s):
years of car stereo purchases


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