Originally Posted by
seedsbelize2
Well clearly I don't understand these things. I will continue to do my research. It just blows my mind that 2 years of battery life is now considered normal in some circles. I have been a long time away.
Like I said there is luck involved. We would see thousands of cars, many the same model with the same battery. Some would go bad the first or second year, some would last 5 years or more.
A battery can test good and start the car normally and go bad the next day. A battery can go dead and after a jump can work fine for months until the next failure.
They can test good and be dead every morning.
The AGM batteries are the worst to diagnose. They almost always test good, even when they have to be jumped regularly.