RTC Data Logger V1.1 rtc battery

edited July 2 in Arduino & Crowduino

I have everywhere I can think of to find what battery is needed for the RTC .

could someone please let me know what battery size i should get.


  • You can use CR1220
    CR: Lithium battery
    12: Diameter 12mm
    20: Thickness 2.0mm

  • thank you very much

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