The Galaxy Buds+ give you up to 22 hours of play time, with 11 hours of play time in a single charge, and an additional 11 hours with the charging case. Charging in the case for 10 minutes will provide 3 hours of battery life.
You can check the status of the earbuds by looking at the earbuds' battery indicator light. The case can be charged without inserting the earbuds; when they are inserted, the earbuds and case will charge simultaneously.
Green: Fully charged.
Flashing Red: Charging disabled due to an error or abnormal temperature.
Can you see any lights when you place the Buds+ inside the case?