what is going on here?? my battery has a full charge at 2.74v and im getting wind samples of 15 seconds
What is your firmware version? See info below from WF:
https://help.tempest.earth/hc/en-us/articles/360048877194-Solar-Power-Rechargeable-Battery
Power Save Modes
Tempest devices on firmware version 175 and newer have a new dynamic wind sampling power save feature. This replaces the power save modes described further below.
It will activate when the battery voltage gets below ~2.65V and will be in one of three wind sampling rates:
3s wind sampling, speed (max gust over last 1 min) > 10 mph
6s wind sampling, 5 mph < speed <= 10 mph
15s wind sampling, 0 mph <= speed <= 5 mph