Are the Tiny RTK Settings Saved in Non-Volatile Memory?

Are the Tiny RTk settings saved in non-volatile memory or is it powered by a back up battery? I plan on sending this system into the field and want to know if it’s possible that the module will revert back to factory settings unintentionally and make the module useless. So far in testing it hasn’t reverted but in the field anything could happen such as the system sitting around for too long or someone shorting the 5V to gnd causing a backup battery to fail.

There is a non volatile memory inside Tiny RTK, if you save your parameters inside it (from Config tab in U-Center) you will not lose these even if backup battery is empty.