Seiko A156A and the Maxell XR11630W battery

[ro...@estelle.com]

I picked up a Seiko Solar LCD A156A watch.

There is no life in the LCD.

The battery in place is a Maxell XR11630W Rechargeable 2V.

The battery tester shows 0.7 V left in the battery and 1.68V across
the recharging terminals in the watch.

For the sake of argument, let me assume the battery is discharged
because the watch has been in a drawer for some time.

My question is this. Will the battery be so damaged that it will not
now accept a charge, even if I leave the watch in daylight for some
time?

http://www.radioshack.com/sm-model-389-1-55v-85mah-silver-oxide-battery--pi-2062091_tb-features.html
states that their Model 389 1.55V/85mAh Silver-Oxide Battery is
equivalent to the Maxell XR11630W. This must surely be nonsense.

However I did put a 389 battery into the watch to see if it brought
the LCD to life. It did not. Is this an indication that the
electronics are stuffed? Or are the voltages so different that nothing
would show with a 389?

I'd like to get some idea about whether spending $30 or so on a Maxell
XR11630W will be worthwhile.

[Jack Denver]

389 is not equivalent - they are the same physical size but that's it. 2V
vs. 1.55, rechargeable vs not. I'd try charging the lithium original in
direct sun for a while to see what happens.

<ro...@estelle.com> wrote in message
news:6vv3t3pjm5f58ckru...@4ax.com...

[dAz]

ro...@estelle.com wrote:
> I picked up a Seiko Solar LCD A156A watch.
>
> There is no life in the LCD.
>
> The battery in place is a Maxell XR11630W Rechargeable 2V.
>
> The battery tester shows 0.7 V left in the battery and 1.68V across
> the recharging terminals in the watch.
>
> For the sake of argument, let me assume the battery is discharged
> because the watch has been in a drawer for some time.
>
> My question is this. Will the battery be so damaged that it will not
> now accept a charge, even if I leave the watch in daylight for some
> time?

yes, if the battery has been discharged for a long time they tend not to
hold a charge anymore.

>
> http://www.radioshack.com/sm-model-389-1-55v-85mah-silver-oxide-battery--pi-2062091_tb-features.html
> states that their Model 389 1.55V/85mAh Silver-Oxide Battery is
> equivalent to the Maxell XR11630W. This must surely be nonsense.

well it is as far as sizes goes, but obviously it is not a rechargeable
cell, you could use the SR1130W but you would need to disconnect the
solar cell to prevent it from charging the disposable battery.

>
> However I did put a 389 battery into the watch to see if it brought
> the LCD to life. It did not. Is this an indication that the
> electronics are stuffed? Or are the voltages so different that nothing
> would show with a 389?

well battery voltages are about the same or close enough that the 389
should still work 1.55v to 2v, so you should still get the display
working, just have a real close look at the battery hatch and terminals,
look for any signs of leakage, if they look clean then without a
watchmaker checking the module over it is hard to say what the problem
is, parts are no longer available for it either.

[ro...@estelle.com]

Thanks for those helpful suggestions. I told the seller at a car boot
sale that, for $1, I would not come back and complain if the watch was
stuffed. If a dose of sunlight does not work then I shall bin it.

[ro...@estelle.com]

Thanks. If a dose of sunlight does not work then I shall bin the
watch.

[stel...@gmail.com]

There is an original XR11630W battery from ebay in Italy but it is visible only from ebay.it!