When the toothbrush battery is low, the 3 mode lights will flash. To charge, connect the USB port into a compatible power adaptor. Remove the charging cover on the base of the toothbrush and connect to the USB-C port. The recommended charging time is 2-3 hours.
The 3 mode lights reflects the charging status:
- Low Battery: if the toothbrush has low battery, the 3 mode lights will flash
- Charging: the 3 mode lights will cycle through to show charging progress
- Fully Charged: when fully charged the 3 mode lights will remain on until the charging cable is unplugged
It is recommended to unplug the charging cable to maintain the toothbrush battery life.