How long does a set of batteries last?

What brand batteries are these? You're speaking of.

 

There’s no expiration dates on batteries. Too many variables to say how long they will last.
I have more problems in hot weather. I don’t remember the last time I had to change batteries in winter, but the last three sets I changed were in summer.

 

New batteries usually last 2- 3 years. Refurbished only 1 year.

 

I have seen those Freightliner batteries last 400k miles, but usually batteries seem to be good only for 2-3 years

 

I have read some drivers say if you trickle charge them on weekends or when ever you are home you may get 4-5 years out of them.
Personally I swap them out every two years just before winter.

 

They last until the coldest, nastiest, worst day you can imagine. Then nothing. So you freeze while on your hands and knees wondering who in their right mind would put batteries under top step, above the bottom step. After busting knuckles, in the cold, which makes it 3x worse, and hitting back of your head on latch, I change them every two years needed or not. Preferably before winter.

 

I wouldn't go much more than 4 personally.

Thing a lot of folks don't realize is weak batteries kill starters. The starter will always draw the same amount of power. If the voltage is not there, it'll suck more amps (power = volts x amps). More amps, more heat. More heat, shorter starter life.

 

Letting your batteries run low also shortens the life of them. When I'm home I always made double sure everything is off and unplugged. I've never had the low voltage warning come on in the year since I bought the truck new.