I have the MicroMod Weather Carrier Board with an ESP32 processor board and from looking at the design it appears there is a RTC as part of the processor board and battery for the RTC on the carrier.
So far I have not been able to get the RTC to respond.
I don’t see an RTC on the MicroMod Weather Carrier Board nor the ESP32 processor board.
The Artemis processor has an RTC build in, but given the design the RTC battery is not only providing power to the RTC, but the whole board (thus running low quickly)