Backup without removing the SD-card

@overeasy, this is an interesting thread, and I just read these as well:

I’m coming up on my 1-year anniversary of my first IoTaWatt (yea!) and have not yet exported my data to the supported external databases. So, I was thinking of using the APIs to extract all the data to save it before the IoTaWatt runs out of space and may flush the oldest data out.

So, from what I gather from these threads, a 1-minute interval is what I should use for the API calls (that’s sufficient resolution for me for long-term data)?

Alternatively, should I decide to remove the microSD card and copy it, what format are the datalogs / history logs, that I may extract the data from there manually?

And, for completeness here, docs say:
https://docs.iotawatt.com/en/02_05_12/query.html

“The datalog contains measurements at 5 second (current log) and 1 minute (history log) intervals.”

I’m not finding how long the datalog goes back in time for the 5-second resolution…?