Best Battery:

[heavychevy]

im runnin dual optima red tops ive had 0 problems

[VileZambonie]

fyi Delco and Delphi are companies that are great at slapping labels on products although Delphi has been legit in R&D they've succumbed to the overtaking of dollars before SENSE

[joesgarage71]

 There are only three companies that make batteries in the country. most on this side of the mississippi are made in winston salem, The die hards, interstate and all them off brands are made by the same company. It doesn't matter what you buy the 50 dollar one or the 200 dollar battery its only going to last about 5 years. When I buy a battery(which I'm getting one today) I'm going to buy the one that weights the most 39-40#'s and has a pro rate of 5 years. I'll pay about 85 bucks. and it will have near 900CCA. Them red and yellow top batteries are a waste of money.
nuff said

[Jay2D2]

In our frozen quebec climate the only battery Ive never seen have trouble on the coldest days are the AC Delco Professional series, which are made by Intersate.  The cheaper series of the Delcos, also known as ACDs also seem to hold up quite well but they are made overseas.  We never have warranty problems either with them and we seel a load of them.  Before that I was running batteries from canadian tire but I have no idea who made them.  They were sucky batteries, had to replace them once a year but they never asked questions or checked them.  A plain and simple swap they were so used to it.
I also run the AC Delco motorsport batteries in my lawn tractor and bike.

So yeah my vote for battery brand is for AC Delco professional series.  The technical aspects(Lead acid, gel, AGM, sealed, deep cycle...etc..) depends entirely on the application.

[MarkS]

I hear ya joesgarage... Not to knock the red tops (I have one in my 67 and it does look sweet) but I haven't seen the value in a triple digit cost. Vile outlined batteries like a professor! You really don't need those things except in extreme situations. I believe most of the cost is in the gel fill versus water... you don't get anymore life. My 87 sits most of the time so I've found a deep cycle works great. No need for a trickle charger. Drive it for fun in the summer and disconnect in the winter. Hook it back up next spring and it fires right up for 5 years or so. $90 bucks versus $200. I'd rather buy gas... My 67 with the fancy Optima requires a battery maintainer but I still like the cool look

[k5blazerfan]

interstate in my opinion... mine is half full of tap water and in our cold wyoming winters of -20 truck starts just fine.. took the battery out used it in my friends yota cranked in it for bout 3 hours stuck it back in my k5 hit the key and down the road i went