How long does the Earflo battery last when fully charged? April 29, 2026 20:39 Updated When fully charged, Earflo can be used for several consecutive days before the battery enters low-power mode. Related articles Can I use Earflo with multiple children? What should I do if using Earflo isn’t improving my child’s symptoms? Can I warm Earflo filled with a drink in the microwave? What happens if I use Earflo more than 10 times in one day? How do I know if the mask is fitting properly / if the mask has sealed with my child’s nose?