How can I use a 2nd battery in my trunk to power my amp and subs?

I want to power my amp without running a power wire through the cabin. Is it possible to just throw a second batteryand ground it to the chassis?

5 Responses to “How can I use a 2nd battery in my trunk to power my amp and subs?”

  1. Chris  on February 20th, 2013

    yes you can. most people do it because the same reason.


  2. Qactis  on February 20th, 2013

    Your alternator still has to power that second battery


  3. Jaco  on February 20th, 2013

    you can yes, but honestly if its a high wattage amp how long to you think that the battery will last with no kinda alternatior on it but the answer to your question is yes


  4. khew  on February 20th, 2013

    no, it has to have some connection to the alternator or the battery will just would be better to just run an additional pos and neg from your battery under the hood to your trunk or if you have an older car with a lot of extra room under the hood you can just rig another battery under the hood. ussually dont have the room but its nice when you do


  5. conejote_99  on February 20th, 2013

    you still need to run the wire to charge the battery or you are pulling that out of the trunk every night ?


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