Should you replace batteries in pairs??

[Woodsracer]

THe previous owner of my Ex replaced only one of the batteries. I have been told that if you dont replace them in pairs that the new one wont be able to handle all the draw and both will go dead... ??? I am currently experiencing battery issues.. Charged them yesterday and today when I got home they were dead. One is the original battery...

[DesertSmoker]

How old are the batts?

[Bad Night]

I do . I have been told enough times it's necessary that I just do it .

[Sesco4]

I say yes replace both. The old battery will pull the new battery down. About a month after I bought my truck I had a battery go bad and as bad as I hated to replace a good battery I went ahead and replaced both.

[Lilpooh]

Always replace in pairs!!! When the new batteries are installed, check to be sure the alternator isn't damaged.

[FourFun]

x3?4?

nothing like replacing one(i know their not cheap!) and getting 3k miles down the road and having the second go. Ask me how i know. Its a PITA.

[Woodsracer]

Originally Posted by DesertSmoker

How old are the batts?

One was replaced by original owner maybe 6 months ago and the other is original...

[Davey~do]

Originally Posted by Sesco4

I say yes replace both. The old battery will pull the new battery down. About a month after I bought my truck I had a battery go bad and as bad as I hated to replace a good battery I went ahead and replaced both.

Absolutely. It's not that the new battery can't handle the load by itself; it's the fact that the old battery will pull the new battery down to somewhere slightly above it's own level. They WILL seek equilibrium with each other.

[Dave]

Always Always Always replace them in pairs. If ones bad it overloads and takes out the other one

[Jayson41]

I dont know if you have a Costco near you however i got two 1000 cold cranking amp, 850 cranking amps which have an 8 year warranty on them for $170 yesturday. Also while i was putting them in while still in the parking lot i saw an international truck their which makes me think they make them for costco.