power supply current limit circuit

Bluetooth speakers​

Children's electric toy cars​

Drones​

Muscle relaxers​

To power fish tank oxygen pumps (if for camping with pet fish) to maintain the survival of fish​

To power remote-controlled cars to add a parent-child interactive entertainment project during camping​

To charge action cameras to ensure uninterrupted shooting during camping activities​

To charge Bluetooth speakers to fill the camping area with favorite music​