There doesn't seem to be any documentation on whether the optional battery holder CN15 can be used on the unit, nor what it's specs should be if it is populated with a battery. I need constant RTC backup from the time the unit is first configured.
thank you, sir. I either have to enable the onboardRTC permanently at time of initial board configuration, or the less desirable route of adding a battery backed i2C RTC...using the existing battery holder is preferrable.
