Re: Seizaiken batteries?

On Oct 5, 1:48 am, dAz <dazb@zipDOTcomDOTau> wrote:
y_p_w wrote:
On Oct 4, 5:22 pm, dAz <dazb@zipDOTcomDOTau> wrote:

stay away from the other rubbish brands, specially Varta and renata

You didn't mention Sony, but Jack said something about "Made in Japan"
generally being pretty good.

actually I did, I only use Seiko or maxell and eveready if I cannot get
it in a seiko, any other brand I do not use, that includes any and all
other brands, sony, varta, renata, no-name chinese *** etc, etc.

I ended up getting more batteries for other watches that I and my
family dug up, as well as a multi-packs of lithium coin cells for
watches and car remotes. One needed a 393, while another used a 381.
Some of the old watches were indeed dead, but a new Sony (that's all
they had) 393 (SR44W) battery brought a classic National Semiconductor
digital watch back to life. Seizaken (Seiko) cells might be a little
overkill for little LED "blinkies" but I still got them cheaper than
equivalent-size alkalines.

I don't really have much need for the 315 except one watch. Seems
like it's got lower capacity, higher prices, and poor availability
compared to 377 or 364. However - it does seem to allow for a really
thin quartz mechanism.

well that is to be expected, 377 and 364s are the most popular
batteries, 315 will cost more because of low productions, consider that
japan alone makes 73million new movements a year, if half of those use
364 and 377 batteries compared the number of watches that use 315s both
in new and existing watches, a few million maybe compared to a couple of
hundred million plus of 364/377, actually I have no idea how many 354
and 377 batteries are made each year.

The 393 (SR1120SW) was expensive at over $1 compared to 28 cents for a
377. I'm not sure what I'm going to do with 15+ 377s and 10+ 364s. I
just sort of got them because they were cheap. I know that their
shelf life is theoretically 3 years, but I thought that they would
still have about 90% of their original capacity at that point. Even
after five years, there should still be usable life, although I've
seen unused Energizer silver oxide cells leak in that time. Maybe it
would be unfair to install such a battery for a paying customer, but
in my own watches it might be a different story.

I got a good look at the Seizaken construction. All their batteries
use a really thick and shiny black gasket material. Other brands seem
to "pot" (cover with epoxy) their seals, or use thinner material. If
you've seen relatively few leaks with this brand, I could make a wild
guess why. They seem to have really high quality seals and are
crimped tight.

.