Does anyone know anything about watch batteries

[Brigadier]

I coveted a gmt 44 for a few years (still do, really), but kept the money in the bank instead.
Got a citizen eco-drive until I take the plunge which needs no batteries, is totally swim proof, does all the perpetual calendar stuff, and cost not a silly amount.

 

[EFLImpudence]

Don't wear a watch.

Always had the time in the car/van and
also now on my phone.

Phone cost £7.50.

 

[Brigadier]

An expensive watch is really a piece of jewelry, rather than a timepiece per se.

 

[EFLImpudence]

Alright. I don't wear jewelry.

 

[Mottie]

I got this Speedmaster ‘57 for my birthday last week. I’m not telling you how old I was.

 

[harlow]

Have you tried this?

Usually works for me.

I tried google

Have you tried this?

Usually works for me.

The link is for equivalent battery numbers from other manufacturers but it don't tell you what's the difference between two types of 395 batteries. I've been looking on ebay and you can buy a 399/395 battery and a 395 battery.

 

[Aquaheat]

@harlow

Apologies for jumping on your thread and not actually answering your question.

The 395 and the 395/399 are the same battery and both will fit a 395 (or equivalents) . The 395, however, will not be any good in a 399 (or equivalents) though as they tend to have a higher current draw.

So if you have a 395 in already then you can replace with either. If it were a 399 in then you would need the other one.

The shop was probably going to find the specific battery for it (there's about 20 odd different numbers it can replace) and charge you more.

Out of interest do you know what watch it is and I may be able to help you a bit further.

For interests sake the battery you need is 2.6mm x 9.5mm and 1.55v

Jon

 

[Aquaheat]

Pound land & 99p shops sell packs of about 20 coin batteries. You get a selection of various sizes in the pack for watches, car alarm fobs etc.

They are crap though and don't last more than a few months if that.

Jon

 

[noseall]

Alright. I don't wear jewelry.

Me neither. Not a big fan of sparkly adornment.
However if hairy chests do come back into fashion, I may be tempted to buy a medallion and remove the top three buttons on my shirt.

 

[Brigadier]

Alright. I don't wear jewelry.

Apologies, wasnt meant to come across as cocky Accurate and reliable timekeeping: £10 quartz. Hundreds or thousands of pounds' worth won't be any more so.

 

[bernardgreen]

Differences in the discharge charactoristic
Siginificant difference in temperature range

399
SR927W (SR57)
Watch Battery OEM
Swiss Made
Rev. 399MF_OEM.04 2015/01
Renata SA Tel. +41 (0)61 975 75 75 [email protected]
CH-4452 Itingen/Switzerland Fax. +41 (0)61 975 75 95 www.renata.com
Technical Data Sheet
Specifications
Chemical system Zinc / Monovalent Silver Oxide, high drain
Nominal Voltage 1,55 V
Capacity 55 mAh, Discharge over 15 kOhm at 20°C to 1,2 V
Operating Temperature* -10°C – 60°C
Self Discharge Less than 10% per year at 20°C
Weight ~0,77 g

395
SR927SW (SR57)
Watch Battery OEM
Swiss Made
Rev. 395MF_OEM.02 2010/11
Renata SA Tel. +41 (0)61 975 75 75 [email protected]
CH-4452 Itingen/Switzerland Fax. +41 (0)61 975 75 95 www.renata.com
Technical Data Sheet
Specifications
Chemical system Zinc / Monovalent Silver Oxide, low drain
Nominal Voltage 1,55 V
Capacity 55 mAh, Discharge over 18,2 kOhm at 20°C to 1,2 V
Operating Temperature 0°C – 60°C
Self Discharge Less than 5% per year at 20°C
Weight ~0,76 g

Estimate useful life ( Vbatt > 1.2 V )
395 650 hours to 1.2 volts
399 520 hours to 1.2 volts

 

[Ihavenojob]

They are crap though and don't last more than a few months if that.

Jon

Not that bad, fitted to my watch they last more than 1 year, car fob ok after several years. Bought a pack at poundland, but took them back as I found the same pack at 99p store, well you would, wouldn't you.

 

[Mottie]

I always ask for a price match when I buy anything in the pound store.

 

[Doggit]

I always ask for a price match when I buy anything in the pound store

No, not for a penny, but yes for the principle.

And I suppose you've got to, to be able to afford the Speedmaster haven't you.


My Casio is a digital watch, damned accurate, and has a solar panel at the top, and I haven't changed the battery in 6 years, and I expect the watch will get replaced (with another of the same make) before it needs a new one. But I'll try and get a radio time stamp next time - getting lazy in my old age.

 

[Brigadier]

Me neither. Not a big fan of sparkly adornment.
However if hairy chests do come back into fashion, I may be tempted to buy a medallion and remove the top three buttons on my shirt.

But then people wouldn't notice your overpriced sunglasses, nor your sweatshop jeans with the £200 label on them