The Nike+ FuelBand SE battery life is 3-5 days, and the first generation FuelBand battery life is 1-4 days. If your FuelBand's battery lasts less than 1 day after being fully charged, please contact us for troubleshooting assistance.
Make sure your FuelBand has the latest firmware version to maximize your battery life. The FuelBand's battery life can vary due to many factors, including how frequently you sync your FuelBand with your mobile device.
Nike is continuously working to enhance and extend the FuelBand's battery life.
You can check your battery life at any time by pressing and holding the button on your band until you navigate past the Session START indicator. The battery life is displayed as a battery icon, filled with LED lights based on how charged the band is at the time. You can press and hold to see the battery icon on your first generation Nike+ FuelBand with the latest version of firmware as well.
You can also check by connecting your FuelBand to your USB port. A battery icon will appear on your LED display, either in outline (empty), filled in (full) or partially filled in (partially full).
Finally, check your battery life through the Nike+ FuelBand App. Simply swipe to the lefthand navigation to view the battery icon in the top left. Tap the icon to see more details. NOTE: Your device must be synced with your phone.
If the FuelBand's battery or memory is running low, you'll be prompted to sync your FuelBand to Nike+.