a) Keep the earbuds in the charging case (for TWS) and put the charging case on charging

b) Put the device on charge (for the rest of the devices- Neckband/Speaker/Headphones)

Using the C-Type USB cable received with the product, connect the device with the charging cable to the USB port on the laptop/computer

Make sure that your PC/laptop is turned ON and not in sleep / hibernate mode

If it still doesn't work, try with a different USB port on your laptop/computer just to be sure whether an issue exists with your USB port

Connect the Charging case with the C-type USB cable received with the product and Avoid using high-power mobile chargers (over 2A)

Make sure that the wall socket is functioning properly and not loose or damaged

If it still doesn't work, try to charge from a different wall socket or adapter.