The operation with the Emlid M + and M2 units has always been powered by USB with the use of a powerbank.
We have a button on the USB cable that turns the unit on / off. This button would be the same as inserting and removing the cable from the unit at the end of the operation.
This procedure rarely lost an event log. The unit takes a few seconds longer to initialize but nothing that impacts everyday production.
to solve the intermediary, we are at the end of the operation by accessing the unit and finalizing the registration and then downloading it.
However, we also noticed that some logs disappear even after finishing and the download zip is not generated.
Yesterday we observed that a unit created a log of more than 2h50min being that our operation hardly exceeds 50min with maximum intervals of 20min, time to remove and install the other battery in the equipment to continue the operation.
This log with these crazy times always disappears from the download option and the unit hangs for a few minutes on startup.
We are literally working with a lottery of data because we were never able to know which of the 4 M + units or the 2 M2 units had a usable log.