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Grand Seiko and battery leakage

  1. Yehoshua May 6, 2021

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    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?
     
  2. JimInOz "Helpful Hints from Heloise" of bracelet cleaning. May 6, 2021

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    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.

    Your battery will last for its usable charge period and should be replaced with a new battery, preferably a freshly manufactured one.

    I think (I read somewhere) that batteries tend to leak mostly after they have gone flat.

    If the watch is not going to be used for an extended period, you should remove the battery.
     
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  3. blueteg May 10, 2021

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    Grreeat....I just did my first DIY battery swap on one of my quartz watches (a TAG Heuer) and used a Renata (#730). ::facepalm2::

    In case anyone is curious, here is a handy dandy cross reference guide from Seiko:
     
    Seiko watch chart (low drain).png Seiko watch chart (high drain).png
  4. bradurani May 10, 2021

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    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.
     
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  5. Yehoshua May 10, 2021

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    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).
     
  6. bradurani May 10, 2021

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    Yes. Any battery number that starts with "SR..." is silver oxide. I don't think any new watches are sold with alkaline batteries. If so, they must be really cheap crap.
     
  7. S.H. May 26, 2021

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    Maxcell and Energizer (usually Japan and US made) have a good track record. Renata are leaky indeed, for some reason. They must have gaskets made of Swiss cheese?
     
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