Can i take battery off when car is not driven?
 

Well yes i can i know that but is there anything wrong by doing it on efi ( LSx + stock ecm ) cars ? I dont want to set up any battery chargers etc . Car is driven few times in a month and i clock takes some power etc.

Won't hurt anything. In fact, GM recommends doing just that when the car is in storage.



Of course, a dry cell battery would eliminate the worries and the work....