Both the 8N & 860 are still 6V, so I'm always looking for my next battery. I seem to get about 5 years out of one on average. I bought this last one on Sunday from TSC to go on the 860. It's replacing a 5 year old Exide which would have gone longer, but I let it go dry. The one still on the 8N is a 3 year old Autozone. I've noticed looking at the Travellor, Exide, & Duralast all now look like the old original case Ford batteries.