DS3231 RTC module, 32kB Memory, I2C interface, Battery Backup
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|Discount Type||Quantity||Volume Price|
|Quantity||3 - 9||7.5% $6.01|
|Quantity||10 - 24||12.5% $5.69|
|Quantity||25 +||15% $5.53|
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The module has a socket for a rechargeable lithium cell LR2032 and a simple charging circuit.
Since the current drawn from the battery is very tiny, and a standard CR2032 cell will last way over 5 years, it does not make much sense to invest in one of the very expensive, rechargeable cells. If you want to use a standard CR2032 lithium cell, you only need to interrupt the charging circuit by removing one component. Please see the picture gallery for details.