Battery Question

[jojo42]

I have a 99' Explorer Sport and I was wondering if it'd be a bad idea to stick a battery in the back if I only have the stock alt, I currently have a Yellowtop under the hood and my voltage is still meh. I know it'd be smart to just get a H/O alt, but I already have another battery sitting in my basement and it'd only cost me the price of buying a in-line fuse to put it in. Would I have charging issues with the stock alt or would I be fine?

[dugee81]

1. Make sure it doesn't expel fumes, that would be dangerous to your health

2. I would recommend also doing big 3 to just smooth things out a little more.

I ran 2 batts in the rear with a stock alt on my current amp and I was fine. Had to charge It up every so often but it worked alright

Edited November 29, 2010 by dugee81

[skittlesRgood]

it'll be fine. just be sure that the second battery is an AGM like the yellowtop

[Type RF]

You really should get a alternator. A second battery will load the alternator even more and may result in even lower voltage overall.

[jojo42]

1. Make sure it doesn't expel fumes, that would be dangerous to your health

2. I would recommend also doing big 3 to just smooth things out a little more.

I ran 2 batts in the rear with a stock alt on my current amp and I was fine. Had to charge It up every so often but it worked alright

I have the Big-3 already done but with my current amp at 2 ohms I still get some drop on certain songs, was just wondering if it'd be a smart idea to toss my other batt in to be safe.

[dugee81]

It definitely wouldn't hurt, unless it was a wet cell that would fill your cabin with fumes. Nooo good! only true way I can see it killing your alt is if the battery had a bad cell.

[jojo42]

It definitely wouldn't hurt, unless it was a wet cell that would fill your cabin with fumes. Nooo good! only true way I can see it killing your alt is if the battery had a bad cell.

Yea, just checked, both extra batteries I have sitting in the basement are both wet cells =/. Could I maybe stick the wet cell under the hood and the optima in the back, or bad idea?

[dugee81]

The optima IIRC is AGM, correct? You should be fine. You should also check the voltage on the wet cells before putting them in, how long have they been sitting?

[skittlesRgood]

no, they really shouldnt be used together. i mean you could do that, and it would help, but... they just dont work well together.

[jojo42]

I've only had the Yellowtop in the car for about 5 months or so, maybe a lil less and the other batts been sitting in the basement since then, but they're off the ground, not just sitting on concrete.