GB5. How can I replace batteries?

Arturs Kalnins

• 2338 Answers
• Posted on Mar 05, 2010

SOURCE: E010 S95986 HSB power cell does not hold charge

Change the capacitor. This is the thing accumulating the energy. As the ordinary batteries, it may go bust, so, all you have to do is to replace it. There is no such a name as power cell in Citizen EcoDrive watches - there are CAPACITOR. Capacitor absorbs the energy from the light sensitive panel(s) and dispenses it in the ordinary battery manner. Advertisements are saying that you will never have to change the battery - that's right, because there are no batteries at all. Instead of battery there are CAPACITOR, but nobody says it will last forever. Rate me, plz.

Testimonial: "Thanks, that's what I expected. The manual says the watch has a manganese titanium rechargeable battery--I will get it checked."

SOURCE: I have a Casio 2688

You likely have a dead battery. Follow the instructions on this web site http://forums.watchuseek.com/f43/how-change-ctl1616-rechargeable-battery-41076.html
it is clear and covers most casio models. Watch closely for the springs when taking your watch apart. You can order the battery online (the best option) but most people that use a standard lithium battery seem to have no problem.

SOURCE: My automatic omega watch stops

Almost all automatic wristwatches made today have an 18-24 hour "power reserve" when fully wound. A 24 hour reserve is actually very, very good. I can't think of a modern self-winding wristwatch that has a 48-hour power reserve because that would require a super-long or much larger mainspring than would fit in a modern watch movement / case. There may be some hand-crafted or super-premium watches that can do this, but only a very select few.
Manual wind railroad pocket watches, which were some of the finest and most accurate mechanical watch movements ever made, generally had a 40-hour power reserve. That extra capacity was created by using a large mainspring to store the extra energy. These mainsprings could be used because of the much larger size of these watches, compared to modern wristwatches.
If you are concerned about keeping your watch ticking, even when you're not wearing it, you might want to look at a "watch winder"--basically, a small watch case that rotates the watch for you, keeping the automatic winding rotor moving and the watch ticking. In addition, sitting at a computer all day will wind your watch much less than walking and otherwise moving around. Even though you're wearing your watch, if you're not moving, you're not winding it.