Pulsar Stainless Steel Watch V742-8A10 A0 -- Battery Information

Discussion:

(too old to reply)

GM homepc

2011-04-04 17:12:59 UTC

Hello

Can anyone tell me the correct battery size to use for this model Pulsar
watch?

The original battery seemed to last for over four years. I had it
changed out by a jeweler and the replacement battery started to fail at
9 months. Is there a silver oxide or long life lithium battery
available for this model watch?

Regards

Nash

d530

2011-04-04 17:35:05 UTC

Permalink

Post by GM homepc
Hello
Can anyone tell me the correct battery size to use for this model Pulsar
watch?
The original battery seemed to last for over four years. I had it
changed out by a jeweler and the replacement battery started to fail at
9 months. Is there a silver oxide or long life lithium battery
available for this model watch?
Regards
Nash

Sure it is. Silver oxide SR920SW. No lithium battery since it's 3V not 1,55V.

Approximate lifetime of battery with V742A movement is 3 years, and with V742C movement is 5 years.

Never install alcaline batteries, they don't last long.

--
your "local" chemist

GM homepc

2011-04-04 19:13:59 UTC

Permalink

Post by d530

Sure it is. Silver oxide SR920SW. No lithium battery since it's 3V not 1,55V.
Approximate lifetime of battery with V742A movement is 3 years, and with V742C movement is 5 years.
Never install alcaline batteries, they don't last long.
--
your "local" chemist

Thanks for the fast reply -- please advise if I need one or two cells
for this model watch.

Nash

d530

2011-04-04 19:45:20 UTC

Permalink

Post by GM homepc
Thanks for the fast reply -- please advise if I need one or two cells
for this model watch.
Nash

My pleasure. Buy 1 or two cells, batteries have limited shelflife.
These are starndard batteries and all suppliers should have them on stock.

------

your "local" chemist

dAz

2011-04-05 00:10:32 UTC

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it is quite possible the last battery has leaked and the battery changer
didn't check for any battery electrolyte around the terminals,

is the watch showing the End Of Life (EOL) for the battery? the seconds
hand pauses then jumps forward 2 or 3 seconds, or is the watch just
stopping?

leaking batteries is one of the most common causes of shortened run
times of quartz watches, a service or new movement is the usual fix

GM homepc

2011-04-05 02:00:51 UTC

Permalink

Post by dAz

it is quite possible the last battery has leaked and the battery
changer didn't check for any battery electrolyte around the terminals,
is the watch showing the End Of Life (EOL) for the battery? the
seconds hand pauses then jumps forward 2 or 3 seconds, or is the watch
just stopping?
leaking batteries is one of the most common causes of shortened run
times of quartz watches, a service or new movement is the usual fix

The watch started to gain a bit of time and then stopped. Before it
stopped the second hand movement seemed a bit irratic.

dAz

2011-04-05 03:41:45 UTC

Permalink

The watch started to gain a bit of time and then stopped. Before it
stopped the second hand movement seemed a bit irratic.

the EOL or end of life indicator on a lot of quartz analogues is usually
the seconds hand stops moving for two seconds, then jumps forward 2
seconds, stops again and repeats, this happens when the battery voltage
drops below a certain point and is showing the battery needs replacing.

but if the last battery only lasted 9 months then either check or get it
checked for battery leakage.

this can show as what looks like moisture around the terminals and
circuit to a real bad example like this

http://members.optushome.com.au/capt.jack/18ctLongines/target2.html

you can see the battery still looks wet, this is the electrolyte which
will react with the metals in the movement, and can show as blue
crystals too.

http://members.optushome.com.au/capt.jack/18ctLongines/target4.html