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<blockquote data-quote="knukonceptz" data-source="post: 2273175" data-attributes="member: 548221">There are a lot of guys running some serious juice out there.Trust me, the amount of 1/0 that leaves our door daily is shocking. If you have 1/0 in your car there is a very good chance you exceed the stock ALT output. Adding a second battery in the rear will help voltage loss - why? Resistance. The site linked below will show at 200A with 20ft of 1/0 on a 12V DC system will have a .808V loss from the cable alone. You put a battery 24&quot; from your amplifier - see what loss you get - .081V. And I am quite sure the rear battery will discharge - why - RESISTANCE. Electricity flows the easiest way it can, so the source with the lowest resistance will discharge first.<a href="http://www.powerstream.com/Wire_Size.htm" target="_blank">http://www.powerstream.com/Wire_Size.htm</a>Again, if you play NON STOP and you have an under rated Alternator, yes it is possible for your batteries to get weak. If abused it could kill the rectifier in the Alternator. <a href="http:////forum/showpost.php?p=2348135&amp;amp;postcount=37" target="_blank">See Post #37 </a>These are very extreme possibilities and I only mention then because it &quot;could&quot; happen. A DVM would warn of an issue if checked weekly/And that is the truth.......A very good point!</blockquote>

[QUOTE="knukonceptz, post: 2273175, member: 548221"] There are a lot of guys running some serious juice out there.Trust me, the amount of 1/0 that leaves our door daily is shocking. If you have 1/0 in your car there is a very good chance you exceed the stock ALT output. Adding a second battery in the rear will help voltage loss - why? Resistance. The site linked below will show at 200A with 20ft of 1/0 on a 12V DC system will have a .808V loss from the cable alone. You put a battery 24" from your amplifier - see what loss you get - .081V. And I am quite sure the rear battery will discharge - why - RESISTANCE. Electricity flows the easiest way it can, so the source with the lowest resistance will discharge first. [URL="http://www.powerstream.com/Wire_Size.htm"]http://www.powerstream.com/Wire_Size.htm[/URL] Again, if you play NON STOP and you have an under rated Alternator, yes it is possible for your batteries to get weak. If abused it could kill the rectifier in the Alternator. [URL="http:////forum/showpost.php?p=2348135&postcount=37"]See Post #37 [/URL]These are very extreme possibilities and I only mention then because it "could" happen. A DVM would warn of an issue if checked weekly/ And that is the truth....... A very good point! [/QUOTE]

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