How to re place battery

Details here

https://www.fixya.com/support/r27181038-changing_watch_batteries

..

To replace the battery in a Rosendahl watch with the model number 43250, you will need to follow these steps:

1. Remove the back of the watch by using a watch back removal tool or a small flathead screwdriver to gently pry it off.
2. Take out the old battery and discard it properly.
3. Take the new battery and orient it so that the positive side is facing up.
4. Place the new battery in the watch, making sure that it is positioned correctly and securely.
5. Replace the back of the watch by pressing it back into place. Make sure that it is securely fastened.

It is important to handle the battery with care, as they can be damaged if they are dropped or handled roughly. If you are uncertain about replacing the battery yourself, you can have it done by a professional watch repair technician. They will be able to replace the battery safely and ensure that the watch is in good working order

The battery of my Casio 1846 W-71 was dead, so I tried to replace the battery by myself.

First, you need to get a hand on a CR2016 3-volts battery. It could cost you 5$ or 10$, but I got 5 of them for 1.50$ at an electronics discount store...

Get a precision screwdriver, remove the 4 screws. Be careful when you remove the cover, there's a tiny spring. Remember where it is, then remove it. Remove the watch from the shell.

Using a flat mini screwdriver, remove the cover that holds the battery. You'll need to unclip all 4 corners. There are centers to unclip too, not sure if there was 2 or 4 of them.

Remove the battery, place the new one. Clip the battery cover back, and put the watch back in the shell.

I closed the cover. The watch was showing time, buttons were working, but no sound at all. Looked on the Internet, and read that you need to short circuit it.

Look carefully, there is a label "AC" near a small hole. (Inside the hole you'll see the gray spike of a welding). Just touch something metal inside the hole (e.g. the welding spike) and then touch the positive (top) side of the battery. Put the cover back in place, press a button and listen for the beep.

Screw the cover back in place.

To remove the battery from the back of an Oasis watch, you will need a small flathead screwdriver or a coin.

1. Locate the battery cover on the back of the watch. It is typically located at the 6 o'clock position.
2. Insert the screwdriver or coin into the notch on the battery cover.
3. Gently pry the battery cover off of the watch.
4. Remove the battery from the watch.
5. If you are replacing the battery, insert the new battery into the watch, making sure that it is oriented correctly.
6. Replace the battery cover by aligning it with the watch and pressing it into place.

If you are having trouble removing the battery cover or if the watch has a different type of back, you may need to refer to the manufacturer's instructions or consult a professional watch repair service. It is important to handle the watch carefully to avoid damaging it.

Thank you for contacting FixYa.

Place the watch face-down on a clean towel to protect the crystal.

2

Gently unscrew the backplate from the watch with a small jeweler's screwdriver and set it aside.

3

Locate the battery compartment and remove the screw holding the cover in place, using the screwdriver. The battery is a small, round silvery button.

4

Make a note of the battery polarity before you remove it. Is the battery positive (+) side up or negative (-)?

5

Take the battery with you to a watch shop or electronics store to buy a replacement.

6

Insert the new battery in the compartment. Replace the battery cover and reverse the above steps to reattach the back cover of your Peugeot watch

Spread the towel out on a flat surface.

Remove the watchband if necessary in order to access the back of the watch.

Unscrew the back protector from the watch using the correct size miniature screw driver. Place the screws in a small pile on the towel. Be careful not to drop them as they are difficult to find.

Remove the back plate by unscrewing the small screws. There is a tiny spring on the underneath of the back plate. It may be visible, or not. Make sure not to turn the watch upside down or the spring will dislodge.

Remove the rubber protector to find the battery.

Use sharp point tweezers to remove the clasp covering the battery. There is a small hole at one end of the clasp. Insert one end of the tweezers into the hole to spring the clasp loose.

Remove the old battery with tweezers.

Insert New Battery and Reassemble Watch

Pick up the new battery using regular tweezers and put it into place. Do not touch the battery with your fingers.

Replace the clasp over the top of the new battery.

Perform a reset by touching the AC contact with one part of the tweezers and the back of the battery with the other part. Hold for a few seconds. Lift the watch carefully and look up at the front to make sure the watch is working. Do not turn the watch over.

Replace the rubber cover.

Replace the back plate by screwing the small screws back into place.

Replace the back protector by screwing the small screws back into place.

Reattach the watch band to the watch face.

Feel a bit unnerved by this? Find a local jeweler. Best regards.
Jewel

1. Place the watch in case holder. Place the watch in the case holder, if you have one. If you do not, place it on a soft cloth.
2. Check for room to work. Check to see if there is room to attach the adjustable case wrench and rotate it 360 degrees. If not remove watch band.
3. Remove case back. Fit the adjustable case wrench into the slots on the case back. Tighten it down until it is snug. Be careful not to slip with this tool as it can scratch the case back of your watch. Work slowly. When it is unscrewed gently pry up the case back taking great care not to damage the internal gasket. If the gasket gets damaged it will need to be replaced with the battery to retain water resistance.
4. Remove battery. The battery will be held in place by some type of retention device. It will need to be removed. Some clips will be removed by using tweezers. Some clips may be moved using a screw driver, and some simply bend out of the way slightly. Remember how it was removed as it must be put back in place exactly for the circuit to be completed after battery change. If the clip is removed, place it and any screws in a paper cup to prevent loss. Remember how the battery was seated, plus (positive) side up or down etc. it needs to be replaced correctly to work.
5. Test battery. Using the battery tester check the battery. If it is dead move to next step, if it is not take the watch to a jewelers for inspection.
6. Clean and inspect battery box. Inspect the battery box the battery came out of. If there is corrosion take it to jewelers for inspection. If there is light dust it may be cleaned with a clean soft cloth.
7. Buy battery. Use the numbers on the battery and buy a new one. Occasionally the number will be obsolete and you will be referenced to a replacement battery in the battery charts. This is the time to also replace the gasket if you need to. Check with a watch maker or jeweler, or the watch company to buy a replacement. We cannot stress enough how important this gasket is to a water resistant watch, without its integrity your fine watch may no longer be resistant.
8. Replace battery. Using the plastic tweezers if you have them, or fingers wearing cotton gloves, replace the battery. Never use bare fingers as finger oils may corrode or short out the new battery. Carefully replace the retention device as it was remove.
9. Replace case back. Make sure that the gasket is in place, and not pinched or caught in the case back when you set it in place. Screw down the case back using your fingers until it is tight and needs the case wrench. Attach case wrench as before and tighten down the case back.
10. Reset and clean watch. Using the appropriate method reset the watch. Use the polishing cloth to clean off any dirt and finger prints.

OR...take to your local jeweler/watchmaker who has the appropiate tools and let them do it for you!!!! :)

The most water resistant watches will have a screwed down case back and crown for maximum water resistance, both of which are backed by internal gaskets. These are the types this articlde will concentrate on. To change the battery in a water resistant watch you will need:

• Adjustable case tool
• Case holder ' + google_ads[0].line1 + '
  ' + google_ads[0].line2 + ' ' + google_ads[0].line3 + '
  
  ' + google_ads[0].visible_url + '' + ' Ads by Google'; } else if (google_ads.length > 1) { s += 'Ads by Google
  '; for(i = 0; i ' + google_ads[i].line1 + '
  ' + google_ads[i].line2 + ' ' + google_ads[i].line3 + '
  ' + google_ads[i].visible_url + '
  '; } s += ''; } document.write(s); return; } google_ad_client = 'pub-8735055091446807'; google_ad_channel = '5953492595'; google_ad_output = 'js'; google_max_num_ads = '2'; google_ad_type = 'text_html'; //google_image_size = '468x55'; google_feedback = 'off'; // --> google_protectAndRun("render_ads.js::google_render_ad", google_handleError, google_render_ad);
• Small screw driver
• Polishing cloth
• Cotton gloves
• Small tweezers
• Plastic tweezers
• Soft clean cloths
• Battery tester
• Paper cup

1. Place the watch in case holder. Place the watch in the case holder, if you have one. If you do not, place it on a soft cloth.
2. Check for room to work. Check to see if there is room to attach the adjustable case wrench and rotate it 360 degrees. If not remove watch band.
3. Remove case back. Fit the adjustable case wrench into the slots on the case back. Tighten it down until it is snug. Be careful not to slip with this tool as it can scratch the case back of your watch. Work slowly. When it is unscrewed gently pry up the case back taking great care not to damage the internal gasket. If the gasket gets damaged it will need to be replaced with the battery to retain water resistance.
4. Remove battery. The battery will be held in place by some type of retention device. It will need to be removed. Some clips will be removed by using tweezers. Some clips may be moved using a screw driver, and some simply bend out of the way slightly. Remember how it was removed as it must be put back in place exactly for the circuit to be completed after battery change. If the clip is removed, place it and any screws in a paper cup to prevent loss. Remember how the battery was seated, plus (positive) side up or down etc. it needs to be replaced correctly to work.
5. Test battery. Using the battery tester check the battery. If it is dead move to next step, if it is not take the watch to a jewelers for inspection.
6. Clean and inspect battery box. Inspect the battery box the battery came out of. If there is corrosion take it to jewelers for inspection. If there is light dust it may be cleaned with a clean soft cloth.
7. Buy battery. Use the numbers on the battery and buy a new one. Occasionally the number will be obsolete and you will be referenced to a replacement battery in the battery charts. This is the time to also replace the gasket if you need to. Check with a watch maker or jeweler, or the watch company to buy a replacement. We cannot stress enough how important this gasket is to a water resistant watch, without its integrity your fine watch may no longer be resistant.
8. Replace battery. Using the plastic tweezers if you have them, or fingers wearing cotton gloves, replace the battery. Never use bare fingers as finger oils may corrode or short out the new battery. Carefully replace the retention device as it was remove.
9. Replace case back. Make sure that the gasket is in place, and not pinched or caught in the case back when you set it in place. Screw down the case back using your fingers until it is tight and needs the case wrench. Attach case wrench as before and tighten down the case back.
10. Reset and clean watch. Using the appropriate method reset the watch. Use the polishing cloth to clean off any dirt and finger prints.

OR...take to your local jeweler/watchmaker who has the appropiate tools and let them do it for you!!!! :)