Optima batteries

I have 8 optima batteries, the best battery there is.
I have one that I bought new in 94, still works great.
One time I was driving down the road and my water pump broke and the fan hit the shroud, broke all the blades off. This was in 94 also. I was a punk kid. I put a new water pump and fan on and drove it that way for two more months. I was changing the oil and I was laying under the truck. Here I had a fan blade that was sticking out of my optima battery. I had been driving this thing for two months liek that. I right then knew these batteries were good. It went through two cells, or all the way through one and a little into another, It still worked but I bought a new one to be a little more reliable I guess, I mean how long was that going to last.
Sams club (walmart) has the best prices on them, 130 bucks for the big red ones. They also have the yellow ones and blue ones at awesome prices.