Reason I ask is because I bought a brand new battery last year (or the year before, I can't exactly remember), and its starting to act really strange like it doesnt want to hold a full charge anymore. Is it time to change it already? 
There ya go........2 years is about it....:sad: The other thing to consider is how often the vehicle is driven to recharge it. You may want to get a trickle or keep charged automatic charger for it. The charger will maintain the battery when the vehicle isn't used for extended periods.The one I have is a very inexpensive one from ValueCraft![]()
I know what you mean about the never ending battery buying, Steve. I have 2 semi's that take 4 EACH, plus my boat, forklift, 2 daily drivers, lawn tractor, 3 vintage vehicles and a generator...I'm juggling 17 batteries here...that's why I don't buy the cheap stuff anymore.....I change enough as it is....:yes:Between cars, trucks, and farm equipment I have eight batteries, six of them with top posts. Whenever a tractor or spray rig battery goes bad I pull the battery out of the Camaro to get the farm equipment going. Then the Camaro gets a new battery. This way the Camaro never has a battery older than one year. I have been doing this for years because a new battery is not only more reliable but also gives off less corrosive gas than an old one. I always buy top of the line Batteries and they last me 4-5 years.