Greetings! I have just purchased an S7 Slim and unfortunately it did not include a battery. Can anyone tell me -- does your unit work without the battery installed but plugged in to the wall? I ask because mine does not power on at all without the battery in it and I do not have a battery to test in the unit. I need to order a battery from China but obviously I don't want to order it if it already is not turning on and is supposed to without the battery but plugged in to ac. So, can you try running your unit without the battery and plugged in to the wall? MANY thanks! *EDIT* After some fiddling, I determined that it does work without the battery. I have a bad cable!!!! Thanks anyway!