I've been collecting for 38 years and have a lot of old stuff that I do play here and there. Many of them are pretty pricey now, and I keep 90% of my games complete, but I do still play them
I'm going to be living in Japan for 5+ years and I don't plan on dragging my collection along with me. My main concern is anything happening with leakage or whatever on my cartridges while I'm gone and won't be around to occasionally power them on or play them. I have a lot of pricey stuff on NES, SNES, and Genesis and I'd hate to have this stuff get damaged if its as simple as spending $100 on batteries, and replace all of my old retro game cart save batteries (NES/SNES/Genesis) with new Panasonic coin cells.
As a collector, would you consider a game devalued if the save battery was replaced in preparation for long term storage?
Would it be more ideal to just remove all of the batteries for storage, then replace them when I get back?
Is this just stupid and paranoid and I should just leave them as-is?