In 5 months, my original Nissan battery will be 5yrs.
How long does an OEM battery usually last?
I have about 80k miles. Should I go ahead and change it right now
in stead of getting stuck somewhere down the line?

 

Have it load tested. If it passes by a decent margin, then don't worry about it.

FWIW back in ~'06 I swapped out the OEM battery in my '95, and only because it was leaking acid; it still started the car fine in single digit temps.

 

I replace the batteries in my cars every 5 years. They may last longer, but for what they cost it's cheap insurance and I have never been stranded because of a dead battery.

 

My new batteries ranged from 3 to over 6+ years. the average is usually 4 or 5. I usually keep a jumper battery with me, just it case. if you or you gf are accident prone, check out the black n decker ones where it has a failsafe if you reversed plugged your polarity.

it new ones from car places, never ever ever from dealers unless you want an used one! :-)

 

at 5 years my oem couldnt start the car if i used the battery while engine was off. and hesitated in the cold. i could have stretched it, but like being about to save gas listening to the radio.

went with the Exide Extreme. longest warranty i have ever seen and the highest ratings all around. http://extreme.exide.com/battery.aspx

had to call them directly to get some numbers and finally found one store 10 min away with one left. i think some regions sell them more but it was about $100.

 

Very wise.

 

i do the same but i swap it every 3-4 years, dont want to be stuck somewhere over a battery

 

Most of the car batteries have 12 months warranty...

 

+1
why spend $$ if you dont have to..

 

my car is a 07 and has 28k miles and the battery has given me crap more than one.

 

im the original owner of my 02, and im going almost 8 yrs on my oem battery

 

I still have the original Nissan Battery in my 96 Maxima with 152,xxx miles.