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Second battery

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    #1

    Second battery

    How do you wire up a second battery? Where do you reccomend putting it?
    Tags: None
    #2
    i would go to the trunk with both of them, u should get a battery switch too. perko makes em for pretty cheap. i have one in my boat and it came with instructions on wiring.

    Comment

      #3
      Originally posted by NozMonster
      How do you wire up a second battery? Where do you reccomend putting it?

      positive to positive, negative to negative ....in the trunk

      please please correct me if im wrong...
      DEVOTE


      __________________________________________
      FS: Lokuputha's Stuff
      "It's more fun to drive a slow car fast than it is to drive a fast car slow."-The Smartest Man In The World

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        #4
        Originally posted by lokuputha
        positive to positive, negative to negative ....in the trunk

        please please correct me if im wrong...
        1: it all depends on wether or not you are wanting to keep the same voltage and increase the amps while extending the life of the bats then pos+pos and neg+neg is correct
        2: but on the other hand if you are wanting overal more volts and amps then pos+neg pos+neg

        1:

        2:


        Current Cars
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          #5
          How would you wire an amp it there to?

          Comment

            #6
            either way he drew them would work.

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              #7
              Sounds good, thanks everyone

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                #8
                no problem...lol thats what we are here for.

                CB7Tuner Resident Gamer!
                PSN: JDMcb7TX

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                  #9
                  DON'T PUT TWO 12 VOLT BATTERIES IN SERIES(pic #2)!!!! YIKES!!!!
                  Why did anyone suggest that? Do you want him to fry his car?
                  I understand if he's using two six volt batteries, but that's not what I think he wants to do.
                  But yeah, in parallel (pos to pos and neg to neg) will work. Not optimum, but it'll work. Though it is more weight and more load on the alternator. If you need more power while the engine is running (meaning the alternator can't keep up) then get a higher output alternator.
                  Opal Metallic Green '92 LX 2dr manual, 181k miles, '94 prelude VTEC wheels for summer (steelies with snow tires for winter), Omni-power struts/springs, and other junk

                  Comment

                    #10
                    Originally posted by Otto
                    DON'T PUT TWO 12 VOLT BATTERIES IN SERIES(pic #2)!!!! YIKES!!!!
                    Why did anyone suggest that? Do you want him to fry his car?
                    I understand if he's using two six volt batteries, but that's not what I think he wants to do.
                    But yeah, in parallel (pos to pos and neg to neg) will work. Not optimum, but it'll work. Though it is more weight and more load on the alternator. If you need more power while the engine is running (meaning the alternator can't keep up) then get a higher output alternator.
                    no no no no
                    pic 2 was for if he need to have more power for mulitiple very large amps that needed powered


                    Current Cars
                    95 Civic Coupe - ass tons of mods but always broke.
                    90 Accord EX auto - no mods.
                    90 Accord EX 5 Speed - no mods
                    76 Datsun 280z - soon to be rb goodness.
                    90 Lexus LS400 - low and slow.
                    85 Cressida - soon to be four doors of 2jz love.

                    Comment

                      #11
                      Is a second battery really necessary? I mean can't you just use a capacitor? I dont know your setup, but it must be banging if you need two batteries

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                        #12
                        Originally posted by 1-slw-cord
                        no no no no
                        pic 2 was for if he need to have more power for mulitiple very large amps that needed powered
                        Oh, OK. That's how it looked to me, so I wanted to be sure he didn't blow himself up or something, ya know.
                        Opal Metallic Green '92 LX 2dr manual, 181k miles, '94 prelude VTEC wheels for summer (steelies with snow tires for winter), Omni-power struts/springs, and other junk

                        Comment

                          #13
                          Well, I'm looking to get a vr2000d for the subs plus another smaller amp for the rest of the components.

                          Comment

                            #14
                            to use 2 batteries you are gonna need battery-isolators. They are used to keep your alt from overloading and to keep both batteries at full charge. If you run them parallel then your gonna have to half charge batteries and one will die. If you run them in series your telling your alt to charge at atleast 24 volts which will cause a fire. Buy a isolator or goto your local JY, look for all f-250's with a dual battery setup and take the isolator from that. You will wire it just the same but I would recommend moving both batteries to the rear of the car. I did this in my prelude when I owned one a while back. The second thing your gonna need to do is run new grounds throughout your car. Keeping the grounding resistance as low to 0 as you can.The true plus to doing this is that you can run your audio to death and still have a one battery capable of jumping your car. Good time to get one blue top and one yellow top. I ran two yellows when I did this and people thought I was dumb.

                            I ran 2 (blue)Tarantula SoundStream 1000x2 amps. Pushing 2 12" Fubur 2400watt DVC 1 ohm speakers along with Kicker 400watt 4 channel along with the Audio Control (epic) bass knob. Turning up the bass in this car would just shut the car off. The second battery always had a charge to start the car again. Having the dual battery was needed since the cost of a cap and getting a custom built Hi-amp alt was out of the question. This is a cheaper route but you must know what your doing and take your time doing it.
                            People most do this in trucks but seldomly they do this is cars. More so now since most cars are electric and cant take a surge like the good ole
                            (1992 and back)cars could
                            WHY ARE HURRICANES NAMED AFTER WOMEN? CUZ WHEN THEY CUM , THEY ARE WET AND WILD AND WHEN THEY LEAVE... THEY TAKE YOUR HOUSE, YOUR CAR AND YOUR MONEY....!

                            Comment

                              #15
                              One last thing you want the isolator to be as close to the alt as possible. It doesnt matter where the batteries are the isolator and then your Fuse Switch.Regular 60,80amp even 100 fuses dont work. They allow to many surges before they pop and prolly did the damage they are suppose to avoid before they pop
                              WHY ARE HURRICANES NAMED AFTER WOMEN? CUZ WHEN THEY CUM , THEY ARE WET AND WILD AND WHEN THEY LEAVE... THEY TAKE YOUR HOUSE, YOUR CAR AND YOUR MONEY....!

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