Venn av meg måtte nettopp bytte sin. På 10 år gammel klokke. Verd å sjekke ulike urmakere da prisen kan variere fra helt innafor til latterlig dyrt.
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- Trådstarter PepsiMax
- Opprettet
Jeg bare tok opp det jeg har lest på en del plasser. Jeg har selv aldri eid noe av den type.
"Even though in theory “kinetic watch” and “solar watch” are powered by rechargeable batteries and capacitors which never need changing, in practice they also need to be replaced in every 7-10 years because with time they lose their ability to store power."
http://www.citizenecodriverepair.com/citizen-capacitor-replacement-2/
chrbir
Støttemedlem
Citizen bruker ikke kondensator/capacitor i Eco-Drive, men en oppladbar litiumcelle.
Fra http://www.citizenpremium.com/faq-category/after-sales/
Q: How long will the Eco Drive energy storage cell last in my watch?
A:
The rechargeble cell featured in Eco Drive watches is a highly specialized unit that will last a lifetime of use. Many times, it is incorrectly referred to as a “capacitor”.
It is highly unusual for these cells to fail. Most commonly, if an Eco Drive is stopping it is more indicative of a low charge. If it is running slow, it may indicate it is time to have the movement serviced.
ogA:
The rechargeble cell featured in Eco Drive watches is a highly specialized unit that will last a lifetime of use. Many times, it is incorrectly referred to as a “capacitor”.
It is highly unusual for these cells to fail. Most commonly, if an Eco Drive is stopping it is more indicative of a low charge. If it is running slow, it may indicate it is time to have the movement serviced.
Q: How long will my battery last?
A:
The Energy Cells featured in our Eco Drive product have a life of 40 years. Even after 20 years it will still maintain 80% of its original charge capacity. It is highly unusual for one of these special cells to fail.
Seiko brukte kondensatorer i Kinetic-systemet i starten, men byttet visstnok til litiumceller i 2009:
http://forums.watchuseek.com/f281/look-into-seiko-kinetic-watch-technology-254265.html
Det er fra Citizen sine kalkuleringer og tydeligvis ikke helt fra virkelighet.
Selskapene som får disse klokker i reparasjon/service sier dette:
Fra 2017: "...they also need to be replaced in every 7-10 years"
http://www.citizenecodriverepair.com/citizen-capacitor-replacement-2/
Fra 2018: "According to the Citizen website, they last indefinitely, but through our own experience, we have found they last anywhere from 5-10 years."
https://www.stewarttime.com/support/citizen-eco-drive-repair-faq/
Disse lithiumceller er alt for nye for å vite hvor mange år de holder og alt er også avhengig om hvordan de ble behandlet.
"Livstid garanti" er en bred estimering.
Og det en sier her på WUS er sikkert litt mer realistisk.
"I have read a lot about the Li Ion technologies and most manufacturers claim a 5% to 15% self degradation in the cells per year whether they are in use or not. If you take the best case of 5% per year; it doesn't take long to reach 50 % capacity remaining. But even if the cell gets down to 10% or 20% reserve capacity it can still power the watch. This is not the real issue since there is enough anecdotal info around to show that many of these watches are still happily working after 10, 15 and some even 20 years.
With the rare occasion of a faulty module or a faulty cell; the biggest single factor that determines the life of the cell is usage. As you mentioned there is an optimum charge level these cells should be kept at. For the low power button cells used in watches, the upper level is probably not as important as the lower level.
Too many people; at least the ones who do experience problems; don't allow the watches to receive enough light. They leave them in dark drawers; watch boxes or they are constantly worn under sleeves. Any of these conditions can lead to the discharge level dropping below the drop out voltage level of the battery. When this happens; rapid break down of the structure of the cell begins. Each one of these discharges damages the battery and drastically reduces the reserve capability.
Fortunately; some of the solar and kinetic watches have had charge levels built into their firmware. A good example would be the Seiko Kinetic Direct Drive which uses the same battery as it's cousins. The general kinetic population gets a 6 month reserve from these batteries while the Direct Drive has been artificially restricted to a one month charge. I don't have the specific details but it would make sense if the watches were programmed to keep the battery with in some range similar to the one you have described but suited to the lower energy cells. Once the watch has reached the lower limit(which hopefully is a good margin above drop out voltage) the module would be put into the lowest drain mode possible to prevent the battery from reaching that critical level for a long, long time.
In the end; it is owner usage that dictates whether these rechargeables attain their theoretical life expectance limits"
http://forums.watchuseek.com/f21/citizen-eco-drive-secondary-battery-life-121363-2.html
Redigert:
chrbir
Støttemedlem
Jeg er enig i at 40 års levetid virker i overkant optimistisk; få ting er vel så usikkert og variabelt som levetiden til oppladbare celler, selv med kjent ladesyklus.
Sier med Rudolf Blodstrupmoen: "Time vill sjåvv"
Jeg lover å melde tilbake årlige tidsavvik (quickset på timeviser) og dødsdag for litiumcellen, hvis den inntreffer før min.
Ja, det hadde vært interessant å høre om hva folk fikk som erfaring med avvik og service på disse.
Jeg tror at ladesyklusene er ganske avgjørende.
Får vise en av mine Citizen Flyback som veldig få har 
Dette er Speedy versjonen (ikke så vanskelig å se)
Dette er Speedy versjonen (ikke så vanskelig å se)
chrbir
Støttemedlem
Min gamle slitte 'beater'
En Citizen Chronograph som jeg kjøpte ny i Stavanger sånn rundt om 1980. - snart 40 år siden det.
Merkelig at den ikke ble ødelagt.
Den ble hensynsløst ''med på alt''. Gikk & gikk. Solid 'metallklump'.
Hvis jeg får tak i ny bezel, skifter den, samtidig som den får en sårt tiltrengt service og polering, vil den være ''god som ny''.
Vel nesten da .. .. Hørt rykter om at 'Chronograph' service koster 'skjorta'.
Og alle urmakere som har åpnet denne, klagde over at den var så vanntett. Dvs. pakning var vel ikke god å få på?
En Citizen Chronograph som jeg kjøpte ny i Stavanger sånn rundt om 1980. - snart 40 år siden det.
Merkelig at den ikke ble ødelagt.
Den ble hensynsløst ''med på alt''. Gikk & gikk. Solid 'metallklump'.
Hvis jeg får tak i ny bezel, skifter den, samtidig som den får en sårt tiltrengt service og polering, vil den være ''god som ny''.
Vel nesten da .. .. Hørt rykter om at 'Chronograph' service koster 'skjorta'.
Og alle urmakere som har åpnet denne, klagde over at den var så vanntett. Dvs. pakning var vel ikke god å få på?
Redigert:
sydvester
Støttemedlem
- Medlem
- 3. okt. 2014
- Innlegg
- 831
I mangel av en "Nye Citizen-modeller"-tråd så hiver jeg dette inn her. Citizen oppdaterer altså gode gamle NY004 med et limited run av 6 nye modeller. Spørs om jeg ikke må ha en slik...
Mer info:
https://citizenasialimited.com/
Mer info:
https://citizenasialimited.com/
Redigert:
