Looked up some stuff on the internet and found a way to keep a good, but weak battery going.
Mine would not even start the car after sitting over night.Figured it was a sulfate issue, so I was trying to see if there was something to do. I modified the procedure and used less epsom salt than most recommended. After all was said and done, I took a battery that would not even crank over the car to one that sat over a week while I was sick and still cranked right up. I did it to the batt for the omni and it brought it back to life, too.
They make or you can make your own desulfator, but I'm cheap and did not want to build one. So I found a way to do it with just some epsom salt and distilled water. I'm going to see how long it lasts, but for $6 in parts, it won't take long to pay for itself.