Put a nine volt battery in you mouth and you'll see that DC volt can sting so I think it's too early for you to say this battery was not used for torture.
I looked up the story on the internet. The battery was found next to a bloody uniform (conjecture on whose it is) nowhere near where Pvt. Lynch was held.
The army thinks there was torture committed there so I think it's too early to say that Lynch wasn't in that hospital. I can't see them getting the uniforms mixed up, given her size.
Late last week, Yarsinske said she had thought Lynch was probably dead after hearing reports last week that the young woman's bloodied uniform had been found by Special Forces soldiers inside a closed Nasiriyah hospital room -- not the same hospital where she was found Tuesday. It was thought that the Iraqis used the room in the shuttered hospital for torture and interrogation. This article also said that "She'd been shot twice, but was said to be in stable condition.". Pvt. Lynch had no gunshot wounds. So what is to be believed if they even got that wrong?
An understandable mistake if it was a mistake. It's hard to tell what exactly caused wounds when you first see them.
I am not saying torture did not happen. I am sure IT DID happen. But no evidence is available for this to have happened to Pvt. Lynch beyond the Iraqi lawyer's (who helped rescue her) account of her being slapped around by an Iraqi officer.
Believe what you will.