Anyone has one of these AC-3 AC adapter ?. Does it charge the grip and the camera battery ? When plugged in AC , is the camera fully functional even without battery´s ??? Thinking about the possibility of just using the AC-3 Plug and wire it to connect to external battery. Would be nice if on a long hike,,,,, About the PLUG. Anyone know if its the same plug as on some other Olympus cameras ?? Maby possible to buy it cheaper that way.