What additional car battery do I need to power a 2000w amp and 2 15’s?

I have 0 gauge running through the car. The two 15s in the trunk along with the amp. I dont know what kind of second battery for the car audio I’m looking for.

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5 Responses to “What additional car battery do I need to power a 2000w amp and 2 15’s?”

  1. 84chevy said:

    dude just go to battery plus they have stores all over the world. you walk in tell them what your doing and they hand you or order you exactly what you need

    its that simple

  2. James said:

    I would upgrade your alternator first…

  3. Thomas Argil said:

    as long as you keep your car running your car will be fine lol

  4. Gavin said:

    Yes obviously u can add new battery.
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  5. Barry in Seneca said:

    The battery(s) supply power when the engine is stopped. When the engine is running, the alternator supplies all the accessory powery (like radio, amps, custom lighting, inverters…) as well as power to run the engine, lights, display, AC, engine computer… all this, as well as supplying energy to recharge the battery.

    So, first thing is to upgrade your alternator.

    Take a look at the fuse (fuses) on your amp. They should add up to about 200A or more. If you can’t figure that out, let’s calculate power: 2000W / 13.5V = 150A, plus the inefficiency of the amp, we are looking at over 200A.

    So, your alternator should be rated at about 200A higher than the one that came with the car.

    If you want to run the big amp with the engine off, you are going to need more batteries… several, depending on how long you want to run it, and if you still want to have enough to start the car without always having to ask for a jump.

    So, your new alternator should be about 200A higher than your current amp.




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