i need help with capacitors

[Tiiimay 10+ year member]

I'm sorry, I see no reason. In my car I have a battery and an alternator. Whatever the alternator cannot instantaneously deliver, the battery will. That's what its there for. Oh yeah, and to start the car of course.
Now, lets take your analogy. Your cap is fully charged when all the energy is sucked from it 'at an extremely rapid rate' as you put it. So, your cap went from full energy to zero. Now it has to charge.

Where does it get its energy to charge from?

a battery cannot deliver at the same rate as a cap. and if you run a new battery, you need to wire a charge circuit to it, and your going to need more alternator to keep your two batteries charging. a capacitor is a simple way to do that without the extra work. in most car audio aplications your going to want a new alternator anyways, but that doesnt mean cap's are pointless. they can be found in almost all electronics, for a reason.

 

[Grinder1989 5,000+ posts]

a battery cannot deliver at the same rate as a cap. and if you run a new battery, you need to wire a charge circuit to it, and your going to need more alternator to keep your two batteries charging. a capacitor is a simple way to do that without the extra work. in most car audio aplications your going to want a new alternator anyways, but that doesnt mean cap's are pointless. they can be found in almost all electronics, for a reason.

Umm a batter is better than a bunch of caps....you don't know what your talking about.

 

[Tiiimay 10+ year member]

of course its better. so is a new alternator. but both of those are also alot more effort. a cap is just a simple install on your power wire. at the prices the audio industry charges for caps it makes it less practical in alot of cases, but normaly a cap would make sence. its really not suposed to be an expensive part.

 

[Grinder1989 5,000+ posts]

To the average people who pay around $150 for a cap it is. You could get a Optima for like $20 more and have something a lot better than a POS cap.

 

[jmanpc 5,000+ posts]

a battery cannot deliver at the same rate as a cap. and if you run a new battery, you need to wire a charge circuit to it, and your going to need more alternator to keep your two batteries charging. a capacitor is a simple way to do that without the extra work. in most car audio aplications your going to want a new alternator anyways, but that doesnt mean cap's are pointless. they can be found in almost all electronics, for a reason.

you can get a Kinetik HC600 or HC800 for the price of a 1F cap.... and they've got the capacity of 100 & 200 1F caps, respectively. Kinetiks also have a high discarge rate. So caps lose.