Compare the plug shapes, voltage and frequency in Tonga and Lesotho, and find out which adapter you need before you travel.
Adapter required
Yes — coming from Tonga, you will need a travel adapter for Lesotho. Tonga uses Type I plugs, and Lesotho uses Type M, so the pin shapes will not fit any wall socket.
Tonga (home)
Lesotho (destination)
Electrical specifications in Lesotho
Voltage
Frequency
More about plugs in Lesotho
In Lesotho, the standard power plug is Type M. The country runs on 230 volts at 50 Hz. That means every wall socket in Lesotho is the same shape — Type M, and your plug needs to physically match the socket to fit.
Full Lesotho plug guide