Variables like temperature and humidity can influence power meter accuracy. For best results, we always recommended to manually calibrate POWRLINK ZERO before riding.
Manually Calibrate from the Wahoo App:
When the pedals are first attached, remember to perform 2-3 quick standing track starts (pedaling hard from a standstill) before initial calibration to ensure proper mechanical seating and settling to ensure performance consistent with regular use.
Open the Wahoo Fitness App for iOS or Android and connect to POWRLINK ZERO by clicking Edit to the right of LINKED SENSORS, then use the Add New Sensor button to find POWRLINK ZERO. Always update to the newest firmware, if prompted.
Once paired, click on the linked sensor from the bottom of the workout tab and scroll down to Calibrate. Confirm your crank length in the app, then perform a Zero Offset Calibration following the instructions on screen.
Manually Calibrate from ELEMNT GPS Bike Computers:
Upon initial setup and with the pedals attached, perform 2-3 quick standing track starts (by simply pedaling hard from a standstill) before the first calibration to ensure proper mechanical seating and settling to ensure performance consistent with regular use.
Next, follow the steps outlined in How do I calibrate a Power Meter with the ELEMNT?
POWRLINK ZERO also calibrates automatically after a ride any time the bike sits in a normal vertical riding position and untouched for longer than 30 seconds to maximize power accuracy.
Note: for more calibration information, see: Understanding Automatic and Manual Calibration.