What kind of electrical plugs do they use in Bali?

According to Wikipedia, Indonesia uses type C, type F (which I believe are both standard European two prong power plugs), and less commonly type G plugs.

They use 220 – 240 V which is what most of the world uses, which means you will only need a travel adaptor (unless you’re from a place like the US, Canada, Japan or other places where they use a different voltage).

It’s best to check with where you’re staying or your travel agent to find out what type of travel adaptor you will actually need.

Here is a handy site for the whole world: http://kropla.com/electric2.htm