I've got a question I hope you can help me with. I was changing a battery on my work watch a Casio TRT 300. It takes 2 SR621SW batteries. When I removed the old batteries one had a small plastic round disc on top of it. The watch wasn't that old so I checked each battery on a multimeter and one said 1.55v and the other .55v. indicating one was ok which was the one with the plastic disc on top. My question is should I replace the plastic disc as it was when I first opened the watch? I am not sure if it's necessary or is the reason it seemed to be ok, and the other one was zapped. thanks for your help. dtsoll
Battery change question ????
- Thread starter dtsoll
- Start date
bigcozy
Enlightened
I have put them back in Casios without the plastic and they worked fine. I am not sure why they are there.
d'mo
Enlightened
The disk is there to make sure the internal watch parts fit properly and don't rattle around and ensure alarm contacts aren't accidentally short-circuited. Depending on the model, they can be sometimes be removed without affecting the watch function.
BTW, In most Casio watches, don't forget to short the All Clear (AC) pin against the (+) side of the battery to prepare it for operation after a battery change.
BTW, In most Casio watches, don't forget to short the All Clear (AC) pin against the (+) side of the battery to prepare it for operation after a battery change.
