When you have placed a digital thermometer inside your refrigerator to monitor the temperature, you might notice that after many months of use, the LCD screen stops working. Fortunately, fixing this is usually easy, as this is often due to an empty battery. You just have to replace the empty battery and this does not require special skills. The only things you need is a small precision screwdriver and a new coin cell battery. Just follow the steps below.
The thermometer we used for this manual is available on Amazon under the brand names AOUCE and Unigear.
1. localize the 4 little Philips screws at the edges of the backside of the device.
2. Remove the 4 screws one by one by turning the screwdriver counterclockwise. Set the little screws apart and make sure you won’t loose them by putting them in an egg cup or something.
3. Gently remove the backside of the device by lifting it in an upward direction.
4. Use your finger nail to push the little metal tab at the right side of the battery compartment a little to the right. By doing this, the coin cell battery unlocks and can be removed from the battery compartment, using an other finger.
5. Take a new CR2032 battery from it’s packaging. The + plus side is on top. Now push the coin cell battery gently in the empty battery compartment until it clicks into place.
6. Replace the back cover of the device. ! Important: do this gently and make sure the little sensor on the circuit board exactly fits into the metal sensor-cover on the outside of the back cover. If you don’t do this gently and precisely, the sensor might bend or break.
7. Replace the 4 screws one by one into the back by turning the screwdriver clockwise.
8. Now the LCD display should start to work again. This might take a while. If necessary, push the power button.
Your digital refrigerator thermometer is ready for use again!
Make sure you purchase the right battery for your Smartphone. Batteries are not compatible between different brands, and often not among phones within the same brand. It’s recommended that you use a genuine Nokia 105 battery.
Which battery do I need for my Nokia 105 / TA-1037 Cell Phone?
For your Nokia 105 / TA-1037 Cell Phone you need a a lithium-ion rechargeable battery (sometimes called a Li-ion battery or LIB): Nokia BL-5C Battery, 3.7V 1020mAh, 3.8Wh.
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Replace the Battery
1. Turn off the power so that you won’t lose any stored information. If the device is on, press and hold the power/end-call button for a couple of seconds, until the phone shuts down.
2. Remove the back cover. Hold the device in one hand and find the small notch that will help you to release the cover. It’s on the the bottom of the phone. Insert a fingernail into the notch. Lift upwards gently to pop the phone open. Some force is probably needed. Be careful not to damage your fingernails when you remove the back cover. Also, be certain not to bend or twist the back cover excessively. Doing so may damage the cover.
3. Remove the battery. Using your nail or finger, lift up the battery via the small notch at the top of the battery compartment and lift the battery out of the phone.
4. Install the new battery
Turn the battery if necessary. The Nokia logo should be on top and in the LEFT bottom corner. Align the three gold colored contacts with the three prongs on the bottom-right side of the battery slot, as shown in the pictures below. Slide the battery into the battery housing cavity and press down gently to secure it in place. It should fit easily and exactly.
5.Replace the back cover. The 3 holes should be on top. Gently press the cover down and around the sides of the phone until it clicks into place.
8. Press and hold the power/end-call button for 1 or 2 second. Doing so will turn your phone back on and the device will automatically search for a network.
9. Check if your new battery is recognized by the device and if it’s already charged to some extent. Many battery manufacturers ship new batteries with their batteries charged around 60%. In this case, there is no real need to charge the battery before the first use. A good rule of thumb seems to be to never charge your phone up to more than 80 percent of capacity.
Make sure you purchase the right battery for your Smartphone. Batteries are not compatible between different brands, and often not among phones within the same brand. It’s recommended that you use a genuine Alcatel OneTouch battery.
Which battery do I need for my Alcatel OneTouch 10.16D Cell Phone?
For your Alcatel OneTouch 10.16D Cell Phone you need a a lithium-ion rechargeable battery (sometimes called a Li-ion battery or LIB): Alcatel CAB0400000C1 Battery, 3.7V 400mAh, 1.48Wh.
Replace the Battery
1. Turn off the power so that you won’t lose any stored information. If the device is on, press and hold the red power/end-call button for a couple of seconds, until the phone shuts down.
2. Remove the back cover. Hold the device in one hand and find the small notch that will help you to release the cover. It’s on the the bottom-right corner of the phone. Insert a fingernail into the notch. Lift upwards gently to pop the phone open. Working from the bottom-right corner upwards and then lifting the back cover seems to work well. Be careful not to damage your fingernails when you remove the back cover. Also, be certain not to bend or twist the back cover excessively. Doing so may damage the cover.
3. Remove the old battery.
Using your nail or finger, lift up the battery via the small notch at the top of the battery compartment, and lift the battery out of the phone.
4. Install the new battery
Turn the battery if necessary. The Alcatel logo and the white arrows should be on top. Align the the plus and minus signs and three contacts with the three prongs on the bottom-right side of the battery slot. The large white arrow should be on top, as shown in the picture below. Slide the battery into the battery housing cavity and press down gently to secure it in place. It should fit easily and exactly.
5. Replace the back cover. The Alcatel OneTouch logo on the back should be on top. Gently press the cover down and around the sides of the phone until it smoothly clicks into place.
8. Press and hold the Power button for a couple of seconds. Doing so will turn your phone back on. When the phone is turns on, a sound is played.
9. Check if your new battery is recognized by the device and if it’s already charged to some extent. Many battery manufacturers ship new batteries with their batteries charged around 60%. In this case, there is no real need to charge the battery before the first use. A good rule of thumb seems to be to never charge your phone up to more than 80 percent of capacity.
Hazards
More accidents happen at home than anywhere else. Replacing the battery of a smoke detector is not without hazards. Make sure you know what you’re doing. The FireX smoke alarm PADC240 is mains-powered and connected to your 110 volt or 220 volt home electrical system. The 9 volt battery only serves as backup in the event of a power failure. Since smoke alarms are placed at ceilings, there’s also a risk of falling. If the battery is not replaced correctly, it might not work properly.
When is replacement of the battery needed?
The alarm will chirp at random intervals to indicate that the backup battery is running low and needs replacing. However you should replace smoke alarms, when they are ten years old or sooner if they don’t respond properly when tested.
This manual has especially been written for the FireX Smoke Alarm PADC240, but might also be useful for other FireX smoke alarms with a 9V battery back-up, like the I240C and PAD240.
Necessaries
To replace the battery of the FireX Smoke Alarm PADC240, you need:
New high quality, long lasting 9 volt battery, NOT a rechargeable one
Small screwdriver
Step Ladder
Play low battery sound
Replacing the battery
1. Always turn off the electricity. Locate your house’s main electrical panel. Before replacing the battery, turn off main power by removing the appropriate fuse, or switch the circuit breaker that serves the smoke alarm to the off position.
2. Check that the green light on the unit is off. This indicates that the power has been successfully turned off. Other parts of the room or your house might continue to have lights and power.
3. Find the slot for the insertion of the screwdriver to enable you to remove the alarm from the base.
4. Insert the screwdriver into the slot until you feel a slight movement, indicating that the alarm has been disconnected from the base.
5. Grip the whole top of the smoke detector with your hand and turn it about a half inch counterclockwise. This will release it and you can pull it straight off. Some force might be needed, as it doesn’t necessarily come off easily.
6. Carefully unplug the cable without damaging any wired connections. The beige connector plug with the three wires should pull straight out. It’s probably tight but that’s what you need to do to get the battery compartment open. We did NOT have to push, pull or squeeze plastic “catches” or buttons to release the connector plug, but we had to use muscle power. If you can’t get enough grip on the connector plug with your fingers, you might use waterpump pliers to get it off, but do this at your own risk!
7. Use your fingernail to lift the door of the battery compartment open. You do NOT have to use the red button next to the battery door.
8. Remove the old battery from the battery compartment.
9. Gently disconnect and discard the old battery from the 9 volt battery connector. Do this carefully, otherwise you might damage the connector. Apply slight force, but hold the connector, not the wires when you remove it.
10. Connect a new, 9 volt battery to the connector. Use a high quality, long lasting battery. Using rechargeable or low quality batteries may cause your smoke detectors to fail. The 9 volt battery will have two prongs that need to be pushed into place tightly. The battery will fit only one way. Be sure the battery connector is securely attached to the battery terminals.
11. Place the new and connected battery into the battery compartment.
12. Close the battery compartment door. Push down until it snaps into place. You do NOT have to use screws.
13. Now your smoke alarm is on your table, you might want to use this opportunity to remove possible dust from the inside and outsight of the smoke alarm, using a (handheld) vacuum cleaner. To clean the housing, wipe it down with a dry microfiber cloth.
14. Press and hold the test button. The alarm will sound if the battery is properly connected and working. DO NOT use any other test method.
Play test sound
15. Replace the beige connector plug. Push firmly until the connector snaps into place with a click. Gently tug the connector to be sure it is attached properly.
16. Push the wires back into the ceiling if necessary and reattach the smoke alarm to the mounting plate by turning smoke alarm clockwise until it snaps into place.
17. Turn the electricity back on.
18. Ensure that the green light is showing on the unit. This indicates that the alarm is connected correctly to the main supply.
19. Press and hold the test button once again. The alarm will sound if the smoke alarm is properly connected and working. DO NOT use any other test method.
Play test sound
If the green light on the unit is on and the test sound works, you’ve successfully replaced the battery of your Firex smoke alarm. Congratulations! Your FireX smoke alarm will guard you for years to come!