If you plan on using laptops or electrical equipment that requires charging up at any point in Namibia please, please make sure that you bring with you a power surge protector.
The electrical system here can be a little floopy and surges will blow up something in your chargers.
Replacement laptops chargers are not easy to come by in Namibia unless you are in Windhoek, and only then for specific brands. So if like me you have a Dell computer then a replacement charger is harder to find than yeti poo!
The universal chargers also only work on certain brands.
So in short always have your equipment plugged in with surge protection...otherwise you can end up in a bit of a pickle!