Super/Ultra Capacitor v. Second AGM Battery

[zoltman1991]

Questions regarding “super” caps.
I have:
-fosgate T1500
-two MRV-f300s
-big four
-AGM hood
-300a alternator in the mail coming
Right now, my two 12s are in a large box. There’s a lot in the trunk. My rear is already sitting a little low. I have the XS XP4500 sitting at the house, but this thing weighs another 77lbs or so.
Not familiar with super caps. I know “normal” caps are effectively worthless. But in this system, to avoid adding the additional weight, would a supercap do well? Resting voltage 14.1. Moderate play can drop to mid 13s. If I go heavy, it can hit low 12s.

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[1aespinoza Premium Member]

I have the XS XP4500 sitting at the house, but this thing weighs another 77lbs or so

Check out the Glowe Voltage batteries at Glowevoltage.com

 

[spokey9 5,000+ posts]

The glowe voltage batteries are smal, and light with a lot of power capacity

 

[mr roo]

The glowe voltage batteries are smal, and light with a lot of power capacity

are these funny about voltage? I saw that OP said Resting voltage 14.1. Moderate play can drop to mid 13s. I am learning this world and see some say your resting voltage is too low for certain brands/set ups.

 

[spokey9 5,000+ posts]

are these funny about voltage? I saw that OP said Resting voltage 14.1. Moderate play can drop to mid 13s. I am learning this world and see some say your resting voltage is too low for certain brands/set ups.

The glowe would help keep the voltage up...but you can ask them if you have concerns...they're good about getting back to you

 

[metalheadjoe 10+ year member]

Questions regarding “super” caps.
I have:
-fosgate T1500
-two MRV-f300s
-big four
-AGM hood
-300a alternator in the mail coming
Right now, my two 12s are in a large box. There’s a lot in the trunk. My rear is already sitting a little low. I have the XS XP4500 sitting at the house, but this thing weighs another 77lbs or so.
Not familiar with super caps. I know “normal” caps are effectively worthless. But in this system, to avoid adding the additional weight, would a supercap do well? Resting voltage 14.1. Moderate play can drop to mid 13s. If I go heavy, it can hit low 12s.

The internet is full of people who don't understand the purpose of capacitors, so capacitors get a bad rap. I assure you that capacitors are not worthless, and there is no such thing as "super capacitors", "ultra capacitors", or "normal capacitors"; there are only capacitors. If capacitors were garbage, they wouldn't be used in any circuit.

What you want is a lithium battery. Lithium has speed and capacity that is ideal for car audio. If I had tried lithium before buying my alternator, I don't know if I would have even needed the alternator.

 

[some dude]

If the 300A alternator is in the mail I would install it and see how your voltage does before making any other moves.

 

[metalheadjoe 10+ year member]

If the 300A alternator is in the mail I would install it and see how your voltage does before making any other moves.

"Do what you were going to do". Awesome advice. Thanks.

A helpful post would say something like "the alternator is not going to help your voltage drop, because alternators do not generate electricity until they see a dip in voltage.