We live in an era where we all have multiple devices we need to keep charge or recharge daily. Most of the BMW motorcycles comes standard with the BMW Hella charger socket. These are ideal to charge mobile phones, sat/nav devices and some smaller devices. Make sure your device firs the Hella plug which you can buy from most stores. We find that the smaller and rather powerful power banks one can buy nowadays works just as well if not better. Most of these offers multiple charges and can accommodate two or more devices simultaneously.
In nearly all buildings around South Africa we use the common round pin connectors at 220volts. Adapters for these can be bought locally in SA at around $ 2.50 US or €2.00 euro a unit. This is a fraction of the price paid in various overseas countries. There are a great number of accommodation venues who are in the process of upgrading their electrical sockets to be more European or US friendly when it comes to electrical devices.