A simple 'Siri' command on your iPhone will not do what you asked. It will do something totally different. 

CNBC reports when iPhone users ask 'Siri' to:

'Charge My Phone 100 Percent,' the device will actually give a 5-second window before automatically calling emergency services.

CNBC goes on to say:
'While this unusual function could lead to many mistaken emergency phone calls, it also has the potential to be a discreet method of calling the police in the event of a home invasion or kidnapping.'

Speaking of 'Siri,' meet the woman behind the voice. (To me, it's kind of weird listening to her being interviewed)

Of course, I couldn't let this opportunity pass by without another hilarious clip from The Big Bang Theory. Enjoy