You can charge your nuraphone by simply plugging them into a wall charger or a computer using the included USB-A or a USB-C cable.
To prevent the nuraphone from draining the battery of your mobile device the micro-USB and Lightning cables do not power or charge your nuraphones.
Your nuraphone is powered from the battery in Bluetooth mode and in wired modes using analog, USB-C (when plugged into a phone), micro-USB and Lightning cables.
When fully charged, the battery of your nuraphone in Bluetooth mode will last between 15-20 hours, depending on use.
It takes approximately 3 hours to fully charge the nuraphone battery.