Accutron Quartz battery

Submitted by FiringOnAllFive on January 30, 2022 - 10:59pm

Purchased an Accutron Quartz for my daughter. It was running when we bought it, but I noticed it was losing at least an hour a day and then it died a few days later.

On the back cover is the direction to use Bulova cell 247. I purchased a Renata 284 (7.9 x3.6mm) as that is supposed to be the available equivalent, but it was too tall to fit in the watch.

I was able to get a Renata 297 (7.9x2.6mm) into the battery well, however its still losing about an hour a day.

I'm not sure where to start with this watch. If the marking on the case back is wrong, is it more likely that the case back is non-original? Is there anyway to figure out which movement it has so as to determine the correct battery? Or am I looking into a repair for this watch?

Andersok
Posted February 1, 2022 - 6:35am

The Bulova 247 cell cross-references to "384". Hope that helps.

Found it here.

FiringOnAllFive
Posted February 1, 2022 - 7:52am

In reply to by Andersok

You are correct, looks like I had a typo in the original post.

384 doesn't fit this watch. Its too tall.

Andersok
Posted February 1, 2022 - 11:17am

In reply to by FiringOnAllFive

I found a couple watches of mine that called for the 247 cell, and it looks like I used the 384 replacements without issue.

battery

back

Is your watch similar?

FiringOnAllFive
Posted February 1, 2022 - 1:14pm

In reply to by Andersok

Its my suspicion that either the caseback or the movement is not original to the watch. I'm not sure how to confirm either one.

There's no identifying marks on the back of the movement that I can see apart from what appears to be an "H" inside a box. Is it common to have an unmarked movement or would there be any markings on the front side of the movement?

Andersok
Posted February 1, 2022 - 4:19pm

In reply to by FiringOnAllFive

In the photo above of the caseback you see a mark "N-157"; does your caseback have anything like that?

Photos of the inside caseback and movement could help solve the mystery. I know some movements are not marked well enough to see without having to remove a battery or something else or maybe not marked at all.

Reverend Rob
Posted February 1, 2022 - 12:15pm

Bulova 247 does indeed cross reference to a Renata 384.

If the watch doesn't run with a new cell, it could be getting sticky with age, disuse, or any number of things including exposure to cell radiation.

If that is the case, it would need to be replaced, and for that we need the Bulova calibre number, which may or may not be on the movt.