The watch contains a rechargeable lithium battery . With normal use, a fully charged watch will run for approximately 7 days before needing a charge.
When the battery level is at 15 percent, both the red and green LEDs will flash for 5 seconds to notify you that the battery needs to be charged. This will continue to happen every 5 minutes until the battery is drained completely or until you charge the watch.
IMPORTANT: Make sure that the watch syncs to the iFit app when the battery level is low; the data recorded on the watch will be deleted when the battery level is at zero percent. Be sure to sync your watch before your battery is depleted to avoid any loss of data.
Battery Level in iFit App
In the iFit app, on the dashboard, your battery level will be displayed. Look for the battery level in the bottom toolbar.