[MegaSharkWatch]

Hi guys!

Quick question on Casio solar watches that is surely recurrent but never seems to get a definitive answer.

· How long exactly should a Touch Solar battery have for a life span? The typical Casio answer (it should last for at least as much as the watch itself lasts for) is totally vague.
· Is that answer any different for my Battery less solar watch (Second from the left)?

Cheers!

 

[MegaSharkWatch]

well, whats your oldest solar casio?

as for lifetime, i've heard 7-10yrs.

The oldest one is the second from the right, now on 6 years.

7-10 years seems rather short to me, since I have a bunch of non-solar Casio's for which battery operation is assured during that same time frame (F-91W now on 7 years, and the Calculator/World Time Illuminator ones you see at the center for which battery life is supposed to be 10 years).

 

[MegaSharkWatch]

Your second from left, the HDD-S100 is using a capacitor to store the energy and only have 14 days power reserve. Theoretically, the capacitor should be very long lasting. But once it fails, so is the whole watch.

Yup, that is correct. This is the only watch I've left with no charge at all on certain occasions when I forgot it. I assume the capacitor isn't changeable?

As for Casio watches with a solar rechargeable battery, they have a lot long power reserve (months) and usually also last a very long time if well maintained. There are members here who mentioned their solar watches last more than 20 years. The problem is usually when people completely drained their rechargeable battery (e.g. by leaving the watch in a dark drawer for years) and permanently degrading its performance.

Great! I'm typically quite OCD'd about not letting any of my solar powered watches drain completely And I assume batteries will always be changeable.

Nice collection by the way! I didn't know the HDD-S100's so big, until I see the comparison in your pic.

Thanks! That's precisely what I love about it… I'd say it's my 2[SUP]nd[/SUP] favorite as of today!

 

[MegaSharkWatch]

It would last as long as the watch in most of cases providing that the charging circuit also works, but its capacity will decrease over the time. At some point your watch might be unreliable.

And how long would that be?

 

[MegaSharkWatch]

The newer CTL-1616 battery will most likely last multiple decades. Rechargeable batteries should last decades as long as they do not become fully drained multiple times.

Great! Guess it's now time for me to check which battery do my Tough Solar Casios use!

 

[MegaSharkWatch]

Unless you are wearing an old model, say from 2004 or older, Your watch will have the CTL-1616.

Great news!

 

[MegaSharkWatch]

I have one of the original G2300b's I got in 2000 or 2001, and the battery started going bad around 2010/2011.

Too bad... what did you do then?