Question about Casio G-Shock GW300CA-1V Wrist Watch

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Casio GW300 (2608) battery replacement

My Casio watch (subject) does not recharge. It will shows a blank face.

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  • plantman1 Jan 05, 2008

    Me too. Mine will charge if left in the sun, but loses it's charge in about 1 day

  • Anonymous Feb 11, 2008

    me too. anybody know how to get it to hold a charge? I left mine in the sun for 4 days and the battery has only lasted one day after that

  • cy_thespy Jun 23, 2008

    the battery of my casio 2608 g-shock too ran out. i think casio is blatantly misrepresenting its watch as solar powered. it may be technically accurate but as a consumer, i take it to mean that it recharges the battery. so i sent my watch in to casio's california service center called Time Machine. it took them 6 weeks to replace the battery and charged me $65. i think casio should be investigated for false claims or the subject of a class-action suit.

  • KingOfQueens Sep 04, 2008

    Yeup! I have the same watch and I had the battery replaced. Now it shuts off after about an hour of use and resets. The screen goes blank and then it will turn on when ever it decides to wake up and then the time is totally wrong. It worked great for about 2 years. As for paying the company $65.00 to fix it... And the Watch brand new went for $79.00 at Wal-Mart... Well at that price, I'll use it for target practice and go by a Timex Atomic Watch for about $20 and let them replace the battery every year or so for less than $5.00 and not have to deal with the hassle of something that continually malfunctions and causes me irritation. Much cheaper, and more dependable!

  • Anonymous Jan 06, 2009

    I have the same problem. I was expecting that a 'solar powered" battery would not need to be replaced. For a $65.00 repair fee; I may as well buy another new watch.

  • Anonymous Oct 18, 2018

    Yep, I agree. Casio is totally misrepresenting the functionality of their solar watches. Even the retail outlets that sell their watches have no idea that they use a battery. Casio also makes sure to not have any of the batteries available at the retail outlets so that a cheap replacement can be performed. They need to be legally challenged on this misrepresentation. Every buyer of their solar watches should be entitled to a free battery replacement.



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Hey all. The charge provided by the solar cells on the watch only really extend the life of the battery. The total run time of a battery depends on how the watch is used... backlight requirements etc. The battery will be depleted and need to be replaced.

Here is a site that has good instructions on how to change the battery in your G-Shock watch.

If you want to ensure you still have a the same water resistance rating, I do suggest that you take it to a watch guy to have it replaced for you. They clean switch contacts also and you keep water resistance rating. Good Luck and vote this as a "FixYa". Cheers


Posted on Feb 14, 2008

  • Graeme Ross
    Graeme Ross Feb 14, 2008

    But then the instructions I have provided you may not spply to you if you have a "solar"powered watch where a special type of rechargeable battery is used. Even rechargeable batteries dont last for ever and have a finite number of charge/discharge cycles. If your watch does not appear to be charging, Casio have explicit instructions on how to bets generate a charge from the sun. If attempts to charge fail... it is probable that your "rechargeable" battery is failing and will need to be taken to a Casio agent for replacement.

    a manual to check for this series of watch


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Can someone explain how I get the silver tab/cover that is directly over the battery of the Casio 2608 GW-300 off. I can see the battery, but I am not sure how to remove or raise the tab that holds the battery is place so that I can remove the battery for replacement. thank you for your help.

Posted on Nov 23, 2009

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Can't live in the dark all the time. I found that I need to keep an eye on the charge level bars and at times even put the watch into sunlight (off the wrist) to charge up. Had mine for about 5 years now and am aware that eventually the battery will need replacing. Still strokin' along tho once I figured out that especially in the winter months I've gotta keep an eye on charge level.

Bill Collister
Electronics Tech

Posted on Sep 17, 2009

I have a casio GW300 (2608) and it needs a battery....I checked Radio Shack They said they stocked the Battery.....Heheh....They DON'T.....Their battery is the wrong one....Only the Panasonic 1616 will work. Radio Shack didn't even know about the "capacitor battery"......Beware !!!
Joe Clack, Albuquerque NM 87107

Posted on Nov 05, 2008

Do a google search for 2608 pdf manual... it is in there... just did it a few days ago.

Posted on Nov 04, 2008

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