I had the board powered with the 2500 mah LiPo battery and a 2w Voltaic solar panel and I was monitoring battery life when I saw the sudden drop in voltage.
I am using a XBEE S6B wifi module for telemetery.
Current draw on the battery is between 100ma and 120ma when reading sensors and transmitting
Current draw is not measurable when sleeping
Sampling interval is 15 minutes
I can’t quite make out the serial number but it appears to be 19-0025