Negative voltages may also cause device malfunction or damage.
Real Time Clock
Iono Pi has an optional hardware real time clock with a dedicated long-life non-
rechargeable back-up battery.
The real time clock optional board is shipped with a replaceable Lithium / Manganese
Dioxide (Li/MnO2) battery installed.
The battery is only used to power the RTC chip when the main power is not available
(when the Raspberry Pi is off). Depending on operating conditions it should last up to two
years if the Iono Pi board is not powered, more if the Iono Pi receives external power.
Once the RTC modules and configuration files are properly installed, you will simply use
the date and time commands to control the hardware clock.
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User Guide