Travel adapter from Palau to São Tomé and Príncipe
Adapter Required
Yes — coming from Palau, you will need a travel adapter for São Tomé and Príncipe. Palau uses Type A/Type B plugs, and São Tomé and Príncipe uses Type C/Type F, so the pin shapes will not fit any wall socket. Voltages differ (120 V at home vs 230 V abroad), so check the label on each device. Most modern dual-voltage chargers handle the swing without a converter, but heating appliances usually do not. The mains frequency is also different (60 Hz vs 50 Hz). This rarely matters for electronics but can affect motor-driven devices like clocks and shavers.
Palau (home)
São Tomé and Príncipe (destination)
Electrical specs
More about plugs in São Tomé and Príncipe
In São Tomé and Príncipe, the standard power plug is Type C and Type F. The country runs on 230 volts at 50 Hz. That means wall sockets in São Tomé and Príncipe can be one of 2 different shapes — Type C, Type F, and your plug needs to physically match the socket to fit.