Dock the left and right wireless speakers onto the main unit (left and right base speakers) to charge the speakers.
Turn on the main unit.
During charging, the orange LED on the wireless speaker lights up.
When fully charged, the orange LED on the wireless speaker turns off.
It may take around 3 hours to fully charge the speakers.
The speakers must be placed correctly, ie, the left wireless speaker must be docked on the left base speaker; the right wireless speaker must be docked on the right base speaker. Otherwise, the speakers cannot be charged.