I own two RED tops
One I aquired about 7 years ago when I worked at Schucks part time. It came in as a core because it was "Dead". It was about 2 years old at the time. So I put it on the charger, it came up no problem. I traded it for a regular dead lead battery I had kickin round so I could have it.
It is in my one ton dually to this day. Works great.
The other one I purchased at the Interstate batteries warehouse over by 128th in South Everett as a BLEM for 80.00 about 3 years ago now. It is in my wheeler. I have never had one problem. IT has sat for months durring the winter and keeps going. I try to get out once in a while and start the truck and let it come up to full operating temp, but that doesn't always happen.