Hard Turning Over in the Cold
 

And I ain't talkin' 40 degrees! ;)

2005 G35X.

When we hit -25 and below (yes, negative 25) this thing really has a tough time cranking. I figured battery... probably had the original in it, so I replaced it last week. We hit -30 the other day and it still refused to go. You get a few hard cranks, but not enough to fire it up and then nothing. I have to give it a boost to get enough juice to crank it over and repeat until it finally fires up. Runs fine once it starts, but just doesn't like those negative temps.

Is it just super high compression in these things? Something with the oil? My Dodge Ram sits outside and our Honda Pilot and neither have any trouble turning over.

Assuming your new battery is fine and has plenty of CCA's, you might want to check the cables. I would buy the highest rated battery that will fit in the tray.

did you plug in your block heater cord? in Canada i know if i dont plug her in it will be hard to start

Doesn't have one as far as I can see.

Exide 35-60 battery with 525 cca. It is a group 35 size battery and there is no way you are getting anything else in that tight space. The terminals and connectors are squeaky clean. No troubles at all in that -10 and above range. It just something about that bitter cold.

I live in edmonton and we've had some -30C weather not including the wind chill factor...and my G has been ok whether its plugged in or not. Of course it warms up a lot faster if it is plugged in but either way she fires right up. Maybe it is a connection issue...maybe check your battery terminals...

I realize only a group 35 battery will fit, they make different amp batteries in that size, a red top optima is over 700 cca. You are in the bottom end of the group, since you just bought the battery you should take it back and see if they have something with a higher amp rating.

Exide is recycled Mexican made garbage, put no stake in the battery being any good, there is a good chance its junk

Not only uninformative, but wholly inaccurate as well!

I know someone who used to work in the factory, they dumped old batteries into a huge cauldron and add crap to it until it is good enough electrolyte.
The cut apart the plates inside and put them in A cleaning solution then re use them.

Did you have some facts to dis prove that? Maybe this guy lied. Either way I have first hand experience with numerous exude batteries that had plates shorted right out of the box, or simply would not hold a charge or produce any CCA. Failed load tests from brand 'new'

Look into a battery heater and see if that can help. The new biz has an option to add a plug in battery heater that plugs into the house.
Don't know if it will work for sure but it's an idea

And are you talking -25 C or -25 F?

If Farenheit, where do you live?? lol

It's been -20ish here a couple nights, I have an old battery and haven't had a problem. I'd suggest you check your cooling system, oil weight (should be 5w30 at the highest), and have the battery load tested.

From there I'd go after cables that could be varnished at the connections.

Slow crank is usually a battery/cable connection issue