For US citizens you will need an adapter-converter. The electric current in Israel is 220 volts, C, single phase, 50 Hertz, the same as in Europe and most Israeli sockets are three-pronged which are not the same as the US. As with any other trip you take, make sure you bring your chargers for your laptops, phones, tablets and other electronic devices.

You can purchase an adapter-converter on websites like Amazon, at a Best-Buy, or your local electronics store.