Power Adapter

I told another volunteer this but definitely invest some money in a power adapter if you're going to needing one. Cheap ones short circuit and like, blow up whatever you're powering. That's an exagerration but the point is that good ones are well worth the money. I know REI sells pretty trustable ones. The type of outlet they use in Indonesia is

Indonesia

110/220V

If 110V, then use A If 220V, then use E

They are two long cylindrical prongs 4.8mm in diameter. They look like this: