Here are some tips on how to charge your electronics when you are traveling:
Read up about the country or place of your destination (and more
specifically the place where you will be staying) on what type of
voltage and adapter plugs they use.
If you are not sure, carry a set of adapter plugs. It would be best to
bring a small adapter plug kit because it will have most of the common
plugs. These kits sometimes have a small converter which would be
perfect in case the hotel will have a different voltage.
In this case, bring a converter of your own and a surge protector,
especially if you have more expensive equipment.