Battery swap on a Victorinox Alliance

[WatchFacer]

Hello,

I am attempting to change the battery on my Victorinox Alliance. I successfully opened the case back with a Bergeon rubber ball, but do not see the battery. I am assuming it is under the plastic “lip” at the top of the attached picture.
 

The YouTube tutorials on similar looking Ronda movements show the plastic “chassis” can be removed with tweezers to expose the battery. However, upon trying to remove this plastic chassis with tweezers, the entire watch - movement, dial, hands, etc. - is coming out with it.  The crown stem is threaded through the chassis (even when pulling the crown out to its final position), so I can’t figure out how to remove the lip or plastic chassis to access the battery. 
 

I can’t see any markings or number on the movement to look up instructions, either. 
 

Any guidance would be appreciated. I would be happy to take a video or provide additional images if that would be helpful. 
 

Thanks in advance!

[Neverenoughwatches]

1 hour ago, WatchFacer said:

Hello,

I am attempting to change the battery on my Victorinox Alliance. I successfully opened the case back with a Bergeon rubber ball, but do not see the battery. I am assuming it is under the plastic “lip” at the top of the attached picture.
 

The YouTube tutorials on similar looking Ronda movements show the plastic “chassis” can be removed with tweezers to expose the battery. However, upon trying to remove this plastic chassis with tweezers, the entire watch - movement, dial, hands, etc. - is coming out with it.  The crown stem is threaded through the chassis (even when pulling the crown out to its final position), so I can’t figure out how to remove the lip or plastic chassis to access the battery. 
 

I can’t see any markings or number on the movement to look up instructions, either. 
 

Any guidance would be appreciated. I would be happy to take a video or provide additional images if that would be helpful. 
 

Thanks in advance!

Yay a picture kiddo, a nice looking ETA movement , so the plastic movement ring is just a retainer to keep the movement stable in the case. Usually these come out with a little jiggling and holding the movement in position but it also looks like you may have two case screws to remove as well. Start by deciding if the plastic movement ring has some of itself under the movement and are the case screws attached to it. Usually the ring would just lift out to make for an easy battery change, this may not be the case with yours so tread carefully with this step. Report back when you've verified how that ring is installed.

You see the little steel pin with the arrow pointing to it from the gold circuit trace, this might be the stem release button, it looks to be located in the correct place with the stem notch. Dont press and try to remove the stem just yet, that step might not be required but its worth discovering if that is the release button.

All of this movement is delicate especially the coil, use plastic tweezers if you have them, if not tape up the tips of your metal ones to protect the movement from damage or short circuit. If this is your first time in a watch you need to be wary of what you can and can't touch.

Edited December 1, 2024 by Neverenoughwatches

[AndyGSi]

You need to remove the 2 big screws before the plastic ring will come out.

There shouldn't be any need to remove the stem but make sure you hold the movement down while removing this ring.

[watchweasol]

Hi. The movement is an ETA and will have a number on the frame some where. The battery is under the large plastic tab  which when the two large screws are removed lifts out exposing the battery . Be very careful working around the coil as they are easily scratched and this kills the watch.  All the best.