Yehoshua
路Hi. I'm considering an expensive Grand Seiko f9 watch, but I have this concern that perhaps eventually, the silver oxide battery may leak and then I'd have a potentially destroyed watch. Do these things happen?
You should not be concerned.
However! I would recommend only using a SEIKO or SEIZAIKEN (Seiko Instruments) SR920SW batteries. Not other "generic" brands and not Renata.
I only use these for my watches and I've never seen one of these leak, but have seen Renata and some other lesser known brands leaking.
I used to restore a lot of vintage digital watches. I bought a lot of "untested" ones on eBay and was therefore opening up watches that had old batteries sitting in them for decades quite often. I found a lot of leaked batteries, but they were all alkaline batteries. I never found a leaked silver oxide battery, even though I removed many that were probably 20 years old.
That's very interesting information first hand.
And the Grand Seiko battery isn't alkaline, but rather silver oxide? (I thought both types were similar while lithium is something else).