Power Android phone with portable battery charger and internal battery removed Is it possible to power an Android phone (e.g. Samsung Galaxy S II) with its internal battery removed, using a portable battery charger? 

This question is about phone with internal battery that is removable.
Nope, it's not possible.

You need to put the battery inside in order to switch your device on. The battery completes the circuit, and without the battery the circuit wouldn't complete.