Mitsubishi Mirage problems and issues

The anti theft system is not working, so the car can’t start

My car battery will out of charge when the car not in use/stay... 10 hour or 1 day, the battery will loose charge... I also already check it with multimeter, when i touch the battery body, there is some energy out from it... I also check it with basic check (using touch pen) and take out fuse one by one... And also check the sensor... there is no any sign if any fuse broke... and, when I look at the battery, it seem like little bit inflated. Already send my car to worshop, but the workers too busy,...

Idles really roughly , and feels and sounds like it is going to die whether it’s is lying or accelerating. When accelerating it sounds louder then it did when I first got car