Second battery question...

[bbeljefe]

If someone was to run 2 different AGM batts, would that hurt them at all? Say, a Kinetik 600 and a stock AGM batt (Mopar, I think).

Not at all. At least, not until electrons learn to read. ;-)

 

[alec14 10+ year member]

Not at all. At least, not until electrons learn to read. ;-)

Haha, I gotcha. Thanks man!

 

[MXcarAudio]

I believe it handicaps the more powerful battery, if you run a weaker battery in parallel.... or it overcharges the weak one... messes with the voltage regulater or something... lol idk, I just know its frowned upon

not true, when the car runs the alt supplies power when the bass hits and the alt cannot give enough juice, it pulls from the battery, when you parallel batteries the car sees it as one big battery. the extra battery will not raise your voltage it will keep you bassing longer. If you want a higer voltage then you need an HO alt.

You can mix, i mixed non agme in the hood and agm inside the car for over 6 mos and it didnt hurt

 

[MXcarAudio]

If you have it, run it. It won't damage anything t run wet batteries with dry. The only thing that will happen is that the wet battery will rob the float charge of the AGM when they're not in use. And were talking about a few tenths of a volt here so it's not like the wet battery is going to discharge the AGM.
You also don't need an isolator but, I would plan to upgrade the start battery when you can. And you might want to upgrade the alternator too, as it's a bit small for the power you're running.

I agree, the only time you need isolator is if you bass out with the engine off, which no true basshead does

 

[tenbux1970 10+ year member]

If you have it run it is the best advise out there.The isolator answer is good too.It will seperate the two batteries when the car is off,and you are running the stereo so it does not kill your starting battery.

I have used a standard wet cell car battery upfront for years.I try to find a big marine battery that has 2 sets of terminals + and - so it is easier to connect the runs to the back from the second set.Makes it easier.

 

[bbeljefe]

Also, if you're not made of money and you're not chasing tenths in the lanes, 100AH marine batteries can be had for ~$100.00 and three of them will provide a LOT of current for not a lot of dough.

 

[ta2ed9783]

Also, if you're not made of money and you're not chasing tenths in the lanes, 100AH marine batteries can be had for ~$100.00 and three of them will provide a LOT of current for not a lot of dough.

Well I gt the hc1800 under the hood now. Had to do. Lil cutting to to fit but it's there. I can tell a difference in the voltage just from adding it up front. I have another hc600b on the way to add to the one in back and I should be ok. Basically a 120 ah battery for no more than 2400 rms. And I dont play full tilt for long periods either.

When I had the wet cell up front I could turn the car off and voltage at the cig lighter would be at 12.6 and drop to 12.4 quickly. Now when I turn key off I am usually at 13.4 or better just batts. The remanned alt seems to be charging them fine. Gonna be putting the half ohm load on the sundown soon and ill get some vids of it.