Question about Citizen EcoDrive - charging, holding a charge, battery life - Seiko & Citizen Watch Forum – Japanese Watch Reviews, Discussion & Trading
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Old 05-05-2013, 10:11 PM   #1 (permalink)
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Default Question about Citizen EcoDrive - charging, holding a charge, battery life

I own one Citizen - my Citizen EcoDrive 2100 (aka the "Ron Swanson").


I've noticed that the power reserve indicator hangs out in the same place almost 100% of the time - about dead-center of the right reserve indicator bar. However, I live in a state with very bright sun 350 days per year - it's sunglasses time here if the sun is up, seriously. When I've been out for any amount of time longer than fifteen minutes or so, the indicator will peg all the way over full, and will stay there until I come back inside for awhile. Is this normal? Also, what is the projected life of the current battery in these?






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Old 05-05-2013, 11:22 PM   #2 (permalink)
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Default Re: Question about Citizen EcoDrive - charging, holding a charge, battery life

I'm not able to answer your questions Spencer. But I'm able to tell you yours is a fantastic looking watch!


Really cool, congrats
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Old 05-05-2013, 11:33 PM   #3 (permalink)
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Default Re: Question about Citizen EcoDrive - charging, holding a charge, battery life

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Originally Posted by Kraftwerck
I'm not able to answer your questions Spencer. But I'm able to tell you yours is a fantastic looking watch!


Really cool, congrats

Thanks! It takes an effort to put it back in the box, trust me.



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Old 05-05-2013, 11:36 PM   #4 (permalink)
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Default Re: Question about Citizen EcoDrive - charging, holding a charge, battery life

If I recall previous discussions here correctly, Citizen states E-D storage battery capacity 80% after 20 years. My E-D's don't have a PR indicator, but one has been going almost 8 years now. I take no particular extreme charging actions with it/them other than to avoid dark storage. Mine usually sit on my dresser facing a window durnig the day or under an ordinary lamp at night (until bedtime) when not on wrist.
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Old 05-06-2013, 12:53 PM   #5 (permalink)
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Default Re: Question about Citizen EcoDrive - charging, holding a charge, battery life

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Originally Posted by normdiaz
If I recall previous discussions here correctly, Citizen states E-D storage battery capacity 80% after 20 years. My E-D's don't have a PR indicator, but one has been going almost 8 years now. I take no particular extreme charging actions with it/them other than to avoid dark storage. Mine usually sit on my dresser facing a window durnig the day or under an ordinary lamp at night (until bedtime) when not on wrist.

wow, amazing - 80% storage after twenty years? I should be in the ground before this thing dies! Fantastic.



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Old 05-06-2013, 01:21 PM   #6 (permalink)
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Default Re: Question about Citizen EcoDrive - charging, holding a charge, battery life

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Originally Posted by Spencer

wow, amazing - 80% storage after twenty years? I should be in the ground before this thing dies! Fantastic.

let's see if this hypothesis becomes a theory and then a fact... I doubt it...


Anyhow, I have the same watch. Had the same "problem", but after leaving it in direct sunlight for 3 days straight (behind a window with the AC on) the watch managed to stay at full charge and has been since

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Old 05-06-2013, 01:41 PM   #7 (permalink)
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Default Re: Question about Citizen EcoDrive - charging, holding a charge, battery life

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Originally Posted by normdiaz
If I recall previous discussions here correctly, Citizen states E-D storage battery capacity 80% after 20 years.
Hmmm, I've seen (and quoted) this Citizen statement many times. It was obviously based on accelerated testing, using many charge and discharge cycles. I'd like to think the Panasonic MT (Manganese Titanium Lithium) rechargeable batteries used in Eco-Drives will last at least this long, but we'll have to wait and see. My super-accurate 12-yr old Skyhawk is still ticking away nicely (touch wood), but the CTL 1616 battery in my 8-yr old Casio Atomic Tough Solar is nearing the end of its useful life and is due for replacement. Another project to add to the list -- just what I need.
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Old 05-06-2013, 01:55 PM   #8 (permalink)
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Default Re: Question about Citizen EcoDrive - charging, holding a charge, battery life

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Originally Posted by Spencer
I should be in the ground before this thing dies! Fantastic.
Me too. ;D
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