How Earbud Cases Manage Several Small Batteries
How Earbud Cases Manage Several Small Batteries
The case stores energy and charges each earbud through contacts when it is seated.
The case can be charged from a cable or, on compatible models, a wireless pad. Each earbud has its own small cell and a charging circuit that monitors its state.
Dirty contacts or an incorrectly seated bud can leave one side uncharged. The lights on the outside of a case may describe the case battery, the earbuds or both depending on the model.
Check the charge shown for each side after putting the buds away. If one stays low, inspect how it sits before assuming the battery has worn out.
