Which one best fits my car also I garage the car every winter for 4 months. Will the battery be ok as long as I disconnect the cable. My electronics are all stock so not interested in the yellow top.

 

Lookin to order the red top from summit which one fits? What's the part number, optima doesn't have the cobalt listed on their site.

 

I searched their website (optima) and they show nothing for a cobalt or g5.

 

Yeah I know, I searched optima and summit. Their are 4 red top with top posts, I know one of them has to fit.

 

Do they list any dimensions? I would measure your OE battery and see if you can find dimensions for the red top.

 

the 34/78 is the one most people use. it doesnt "fit" because its taller then stock by quite a bit it pushes up the carpet but otherwise fits

 

This one? -

 

Yeah I'm gonna measure them but not worried about a little push up.

 

Group 34 optima is the about the same size as the stock battery (Mabie a little tiny bit taller) but has the terminals stick up out of the top of battery instead of the stock battery which has them made lower so they are even with the top of battery. So they are the terminal length taller and make the carpet stick up that much.

 

It's not a little, I had a yellow and red top in the same 34/78 size. It kicks the carpet/board up about 1", you cannot put anything in the trunk without risking breaking that board. Just stick with a standard battery.

 

I have an Optima 25/75 in mine and it is a better fit than the 34/78,
just sayin.

 

Ya my post is a little confusing after re-reading it. I'm saying the optima not counting the terminals on top is about the same size. So the optima is about the terminal size(About 1"-1.25") Taller. Sorry about the confusion.

If Cherry_GT has experience with both and says 25/75 fits better then I'd go with that.

 

This one ? -

 

Just went with the duralast gold, it fits perfect. It has the flush terminals just like the ac delco and it's more powerful.

 

While it is the shortest battery they make that has our terminals, it's still almost an inch taller. I'd look at another manufacturer or go with a normal lead/acid battery.

 

you can also put it sideways

 

I did that with my Shuruken...


Strap was too loose and caused some smoke and a shorted battery... lol.

 

lol damn that sucks. pics or it didnt happen???

 

I still have the battery, I can take a ddm pic of it at .2 volts... I may still have some **** fried down there but I will have to move my agm to get to it.