So school me on batteries. The battery in my 89 died a year or so ago back. I put in a red top from the 76 I bought four years ago. I've had to jump it the last couple of times. Last weekend it was die again. I put a charger on it around noon. About six o'clock I went to check on it. Still in the red on the charger but the battery was very hot.

So are you not suppose to use a charger on red tops?
Now what should I replace this with? Looking to get two batteries. One for a 89 FJ62 and the other for a FJ40 (F/2F) type cruiser. Both vehicles will spent weeks with no use. Will be kept at 7,000' and in a garage. So the desert isn't really a issue. But spenting weeks with no use is. Does Costco require their life time warranty to be registered to a vehicle or just sold across the counter?