99fan

I've been buying the wallyworld batteries lately. They last long and they don't hassel you if you have a warranty issue. Plus, they're 30-35 bucks cheaper than any other place.

JERU

X2. Solid battery and you get 850CCA to boot with a sweet warranty....

Ruprecht

Battery.
I'm thinking that sound might be the alternator trying to charge that nearly dead hunk of lead.
Go get an Optima, it's worth the extra money times 10.
No more dead batteries, no more corroded wires, no more acid leaking all over your fender and engine components, A/C lines, vacuum lines, etc.
I'm sold on Optima.
Oh yeah, if you have even the slightest corrosion of the battery cables, replace them completely. You will never have another battery problem after these two upgrades.

Keeblerz28

Only 2°F this morning, I could tell the truck started much easier and quicker. The whine (PS) lasted less than a second right at startup. So, I am confirming here that the whine only occurs and continues longer at colder startup temps. I will probably look into upgrading batteries before next winter.