Quote Originally Posted by lroberts View Post
If you have gone through batteries like that.....I hate to say its probably not the batteries fault. Interstate.....Everstart.....ACDelco...Optimas (which are made by Interstate/JCI) are all good batteries and should last longer than that. Keep them charged with the correct type/size of charger, charge them as soon as possible after use, don't let them stay in sub freezing conditions if possible, make sure they have clean connections,etc.
He speaks the truth. Make sure you're charing them at the proper voltage and charge them as soon as you get home. I've got my 2006 Optimas on automatic chargers in the garage and leave them hooked up all the time.