Denise, you should have a Coin-type lithium battery CR1220 on the circuit board of your camera. that is your RTC (Real Time Clock) battery and for as long as the battery works, your camera will retain it's settings. Including Time and date. When this battery does no longer work, you will lose the settings and have to reset it every time you start your camera. I would suggest to replace the battery. Hope this helps, good luck.
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UPDATE 08/03/2018
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== '''UPDATE 08/03/2018''' ==
Replacing the date battery PowerShot A510 and A520
Confirm that the camera is turned off.[br]
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Open the terminal cover and use your finger nail to pull out the battery holder.
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[image|1516094][br]
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Pull open the battery holder in the direction indicated by the arrow (1). Remove the battery by pulling it up in the direction indicated by the arrow (2).[image|1516095]
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[image|1516094]
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[br]
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Pull open the battery holder in the direction indicated by the arrow (1). Remove the battery by pulling it up in the direction indicated by the arrow (2).
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[image|1516095]
Insert a new battery with the (-) side facing up.[br]
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Replace the battery holder back and close the terminal cover.[br]
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When the Date/Time menu appears, set the date and time.
Denise, you should have a Coin-type lithium battery CR1220 on the circuit board of your camera. that is your RTC (Real Time Clock) battery and for as long as the battery works, your camera will retain it's settings. Including Time and date. When this battery does no longer work, you will lose the settings and have to reset it every time you start your camera. I would suggest to replace the battery. Hope this helps, good luck.
+
+
UPDATE 08/03/2018
+
+
Replacing the date battery PowerShot A510 and A520
+
+
Confirm that the camera is turned off.[br]
+
Open the terminal cover and use your finger nail to pull out the battery holder.
+
+
[image|1516094][br]
+
Pull open the battery holder in the direction indicated by the arrow (1). Remove the battery by pulling it up in the direction indicated by the arrow (2).[image|1516095]
+
+
Insert a new battery with the (-) side facing up.[br]
+
Replace the battery holder back and close the terminal cover.[br]
+
When the Date/Time menu appears, set the date and time.
Denise, you should have a Coin-type lithium battery CR1220 on the circuit board of your camera. that is your RTC (Real Time Clock) battery and for as long as the battery works, your camera will retain it's settings. Including Time and date. When this battery does no longer work, you will lose the settings and have to reset it every time you start your camera. I would suggest to replace the battery. Hope this helps, good luck.