From my research on the web and particularly Youtube, I heard there was a way to "recondition" car batteries. I was skeptical...Nothing could be this easy. BUT IT WORKED!!!!
Here's what I did. I took 8-9 tablespoons of epsom salts. I mixed it with just enough distilled water to create a liquid. The epsom salts dissolves the sulfate that builds up on batteries and causes them to die.
I put 1 tablespoon of the mixture into each of the 6 cells of the battery. I put the battery on a slow trickle charger for a couple of days...(The trickle charger was very weak/slow).
It's been a month since I did this, and the battery is still going strong and starts my truck like a new battery.
Doing a little more research, conditioning batteries like this can give a "4 year" battery a life span of 8-10 years. And adding a little of the mixture about once a year to a good battery can double the cranking amps.
The other possibility for a dead battery is a short in one of the cells, and this method won't work. But if it's sulfate, which is the most likely cause, adding Epsom salts will work.
As expensive as car batteries are, and as bad as they are for the environment, I really hope the next time your battery dies that you give this a try. And don't wait for it to die...When you top off your battery with distilled water, add a little Epsom salts to the water to keep sulfate from building up.
THIS REALLY WORKS!