How to switch out the internal battery
the date time memory battery
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260209
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DAve Nelson I recognize this is an old question. This answer is just in case somebody still has this camera and wants to change the RTC battery. The battery part number is 1-756-710-12. It is located on the flex cable below the flash capacitor. Use this guide Sony Cyber-Shot DSC-W330 Circuit Board Replacement to get to it. Step 7 in this guide shows the battery. To change the battery is not as complicated as it seems just follow that guide.
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