another battery Options

[lime97celi]

i have a 97 celica manual 1.8 how do i put another battery in my car for my system

[itssteve]

if you are wanting to put another batt in the back for this i would take a run of 1/0ga wire and run it in parrallel to the front battery, you can then eather run a ground wire back to the front or you just need to find a good place to ground the battery, then for the amps all you have to do is run the power wire and just ground the amp to the batt.

[Jaws4God]

i've thought the same thing... do you have to get a different altenator or would the stock one still work?

[Batman722]

why not just use a capacitor (1 or 1.5 farad) ?

[Jaws4God]

I have a 4 farad capacitor and it doesn't seem to help at all.. i'm not sure why...

[itssteve]

i would not waste my time with a capacitor as it will just hurt your voltage more than help. a cap is bassically a battery however it doesnt not store very much of a charge, so i would skip wasting my money on buying one and just get a batery which can hold almost 100,000 times as much power than a cap, it also cost about the same.

[Batman722]

I have a 4 farad capacitor and it doesn't seem to help at all.. i'm not sure why...

that is waaaaay too big unless you have some way of keeping it charged...it might be the cause of your battery problem...

i would not waste my time with a capacitor as it will just hurt your voltage more than help. a cap is bassically a battery however it doesnt not store very much of a charge, so i would skip wasting my money on buying one and just get a batery which can hold almost 100,000 times as much power than a cap, it also cost about the same.

hurt ? I don't think so bucky. There are differnet size caps for the appropriate situation. If you think a second battery is better, then just buy a battery and run two of them. Do you plan on getting another alternator ? or just a bigger one ? How do you plan on keeping the second battery charged ?

[itssteve]

i am running the stock alt and i have a g31 marine batt in the back right now and it deff charges the batt just fine, i do have to keep a eye on the voltage as i am running my amp at 1/2ohm and i am pulling a lil over 200 amps, and you are partaly right about the cap, the only time i would run one would be for a small 4 channel amp and this is only because it would only need small burst's for the bass notes but on a mono block amp the draw is a lot more and a single capacitor will not be able to keep up and in the end hurt your voltage, for example i had a 20farad kole cap and i hooked it up and charged it, i played it for 1 min and my voltage had done from being a steady 13 to almost 11 volts and mind you this was only off of 1200 watts. so yes a batt will help more because it can hold almost 100,000 times more energy than a cap

oh and read this if you think i am just trying to bs you


http://www.realmofexcursion.com/forum/show...referrerid=2668

oh im sorry i forgot to say that i am running my batts is serise and that way the alt is charging both at the same time, i dont have a stand alone batt like some people think when you say you have an extra batt

This post has been edited by itssteve: Jan 17, 2008 - 10:29 PM

[Culpable04]

you mean series ?

so you have a 24 volts system now ? I don't get it

series connection double the resistance and double the power, a car is designed for one battery's power ~ 14.0 volts, running an extra battery in series is TWICE that , right ? am I missing something ?

[itssteve]

nah it still stays a 12 volt system, all i did was run a power wire from the front to the back its like hooking up a cap, lol

and i dont think that you can really increse the resistance of a batt, i could be wrong, and it doesnt double the power. i think that you might be missing something...idk mb i am totally wrong

[Culpable04]

nah it still stays a 12 volt system, all i did was run a power wire from the front to the back its like hooking up a cap, lol

and i dont think that you can really increse the resistance of a batt, i could be wrong, and it doesnt double the power. i think that you might be missing something...idk mb i am totally wrong

I didn't say you increased the resistance of the battery, but the resistance of the circuit, when you connect stuff in series the resistance of each component is added so the total resistance is equal to

Ar +Br = Total resistance.

but I'm not missing anything, now you said that you only run the the power wire, which means you have a " parallel " connection, a series connection would require you ro run a wire from the negative pole of the battery to the positive of the second battery, that would be a series connection.

that explains why you still have a 12 volts reading.

This post has been edited by Culpable04: Jan 18, 2008 - 8:33 AM

[Jaws4God]

I have a 4 farad capacitor and it doesn't seem to help at all.. i'm not sure why...

that is waaaaay too big unless you have some way of keeping it charged...it might be the cause of your battery problem...

ummm how can an extra battery cause a battery problem?

[laff09]

I have a 4 farad capacitor and it doesn't seem to help at all.. i'm not sure why...

that is waaaaay too big unless you have some way of keeping it charged...it might be the cause of your battery problem...

ummm how can an extra battery cause a battery problem?

He meant your 4 farad capacitor

[itssteve]

nah it still stays a 12 volt system, all i did was run a power wire from the front to the back its like hooking up a cap, lol

and i dont think that you can really increse the resistance of a batt, i could be wrong, and it doesnt double the power. i think that you might be missing something...idk mb i am totally wrong

I didn't say you increased the resistance of the battery, but the resistance of the circuit, when you connect stuff in series the resistance of each component is added so the total resistance is equal to

Ar +Br = Total resistance.

but I'm not missing anything, now you said that you only run the the power wire, which means you have a " parallel " connection, a series connection would require you ro run a wire from the negative pole of the battery to the positive of the second battery, that would be a series connection.

that explains why you still have a 12 volts reading.

i understand this and the only reason that i dont have a run of wire going from the neg pole in the back to the front is because i dont have enough1/0ga wire to do another run right now. also the resistance of the circut would be so minimal that you would never even notice it, i dont wanna argue about circuts, all i know is that a batt will hold a lot more power than a cap and is a better choice because they tend to be around the same price. also the stock alt will charge the second batt no prob the only other upgrade i would make is to change the ground wires under the hood as that will help the voltage out, also you dont need a extra batt unless you are going to run more than 1800 watts or take an amp below 1/2ohm


This post has been edited by itssteve: Jan 18, 2008 - 7:16 PM

[Jaws4God]

I have a 4 farad capacitor and it doesn't seem to help at all.. i'm not sure why...

that is waaaaay too big unless you have some way of keeping it charged...it might be the cause of your battery problem...

ummm how can an extra battery cause a battery problem?

He meant your 4 farad capacitor

yes, a capacitor is a high discharge battery

[stephen_lee]

nah it still stays a 12 volt system, all i did was run a power wire from the front to the back its like hooking up a cap, lol

and i dont think that you can really increse the resistance of a batt, i could be wrong, and it doesnt double the power. i think that you might be missing something...idk mb i am totally wrong

I didn't say you increased the resistance of the battery, but the resistance of the circuit, when you connect stuff in series the resistance of each component is added so the total resistance is equal to

Ar +Br = Total resistance.

but I'm not missing anything, now you said that you only run the the power wire, which means you have a " parallel " connection, a series connection would require you ro run a wire from the negative pole of the battery to the positive of the second battery, that would be a series connection.

that explains why you still have a 12 volts reading.

i understand this and the only reason that i dont have a run of wire going from the neg pole in the back to the front is because i dont have enough1/0ga wire to do another run right now. also the resistance of the circut would be so minimal that you would never even notice it, i dont wanna argue about circuts, all i know is that a batt will hold a lot more power than a cap and is a better choice because they tend to be around the same price. also the stock alt will charge the second batt no prob the only other upgrade i would make is to change the ground wires under the hood as that will help the voltage out, also you dont need a extra batt unless you are going to run more than 1800 watts or take an amp below 1/2ohm

I think we're getting circuit types confused here.

You have the battery up front hooked up like normal. The second battery in the back has a power wire running from its positive post, to the positive post on the front battery. Both batteries are grounded to the nearest chassis point. This is a parallel circuit. In this circuit, voltage stays the same, while amperage is doubled, and resistance is halved(that the alternator sees).

If you had the battery up fronts negative post to chassis/engine ground, and a power wire running from the front batteries positive post to the rear batteries negative post, then a power wire running from the rear batteries positive post to the stock harness' positive/alt connection into the car, this would be a series circuit. In this circuit the voltage doubles, while amperage stays the same. Resistance also doubles. Of course, power availability stays the same as the above circuit, because Power(Watts) = Amps X Volts.

An extra battery would help with voltage drop since it will double current available to the amp, AND increase the amount of time before the battery/batteries will deplete. SO if you're worried about one, or both, of those problems, a second battery will benefit you.

Edit: Corrected grammar issues.

This post has been edited by stephen_lee: Jan 19, 2008 - 1:27 AM

[Culpable04]

if you connect battery A with battery B on a serial configuration, the voltage will be Av + Bv = total voltage, in this case that would mean a total of 24 Volts on his car electrical system, which is perfectly fine if you like the frying sound of wires burning, a car electrical's system is not designed for such amount of voltage.

this is a quote taken from a reference site !

A laptop battery may have four 3.6 volts lithium-ion cells connected in series to achieve 14.4V and two cells in parallel to increase the capacity from 2000mAh to 4000mAh. Such a configuration is called 4S2P, meaning 4 cell are in series and 2 in parallel

This post has been edited by Culpable04: Jan 19, 2008 - 10:42 AM

[addictions]

ok enough! lol if you have a power wire from the positive from your front battery going to the positive on your other battery then its a parallel circuit lol end of story and caps are good for one thing high energy discharge suck as a "burp" if your setting up a burp car witch means you play your car for about 3 seconds and then not play it again till next time you are at a comp. then buy all means use caps! but if u have a so so system and need a little more juice or u want to keep your lights from dimming then add a second battery IN PARALLEL that will help alot! if u still have a problem do a big 3 upgrade and if you still have a problem then add a higher out put alt. if u need any help with finding one or questions about any thing i have said just pm me more than happy to help. i am going to college for electrical engining and i own a stereo shop so i have a bit of knowledge on this topic lol

[FreddyTheOthaMea...]

i just got a optima yellow top.. stock alt and have 1000 watt amp and i have never once had a problem with it, even with the engine not running and stereo all the way up (i did my interior painting, took about an hour and a half and had the stereo on the whole time and it was fine)

[addictions]

i just got a optima yellow top.. stock alt and have 1000 watt amp and i have never once had a problem with it, even with the engine not running and stereo all the way up (i did my interior painting, took about an hour and a half and had the stereo on the whole time and it was fine)

not a very loud system then lol j/k but really when we burp my buddies system more than twice we have to charge the batteries for a few hours to get it started again.. its gay but with the car running it can bump all day long
one 15 in sound stream on 10,000 watts at 1/2 ohm (burb only) and 4000 watts at 1 ohm (all day bumping)