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Thread: Two novice Seiko rechargeable battery questions

  1. #1
    Master jukeboxs's Avatar
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    Apr 2009

    Two novice Seiko rechargeable battery questions

    Sorry in advance - I have some likely-stupid Seiko battery questions.

    The second hand on my solar Padi Prospex (SNE499P1) started jumping a few months ago and then stopped last month (I bought it new in June 2019). Not thinking about it being solar, I took the back off to replace the battery. But, when it dawned on me that it's solar, I reassembled and placed it under a lamp - and it is ticking away again. Two questions:

    1. How long should it take (under lamp or daylight) for the battery to regain full charge, and should I expect it to hold this again (similar to new) once recharged? Apparently the battery should last 10-15 years, so it's still young. I have been guilty of leaving the watch in the kitchen cupboard, so I'll let it see more daylight in future.

    2. The battery in the watch is a TS920E. But, this looks to the wrong battery for the module inside the watch (which is the V157). The TS920E looks to cover modules V172-V176, and the V157 should use the MT920 battery. If I'm buying a replacement battery, which one do I go for?

    I'm sourcing my info from a watch battery website, nothing more technical.

    Thanks for your time.

    Sorted it myself.
    Last edited by jukeboxs; 21st October 2021 at 18:31. Reason: Sorted it myself

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