This is how I play it, I don't know if it sounds right to you, but these chords 
work perfectly fine on my guitar:-) 
don't forget to check out my youtube channel http://youtube.com/maikenwish0

Jordin Sparks - Battlefield

Capo: 3rd fret (you can put it where ever you want,I use it on 3rd) 
Verse1. 
Em (022000@1)                                      DDont (xx0232@1)try to explain your mind I know whats happening here 
Em (022000@1)                                       D (xx0232@1)one minute its love and suddenly its like a battlefield
Em (022000@1)                                       Done (xx0232@1)word turns into a war why is it the smallest things that tear us down
Em (022000@1)                                                D (xx0232@1)my world is nothing when your gone im here without a shield can't go back now C

pre-chorus.
C (x32010@1)           G (320003@1)                  D (xx0232@1)Both hands tied behind my back for nothing 
C (x32010@1)              G (320003@1)                  D (xx0232@1)These times when we climb so fast to fall again why we're gonna fall for it 
 C (x32010@1)now

chorus. 
USE THESE CHORDS: C,G,D THROUGH THE WHOLE CHORUS AND PRE-CHORUS AND ON THE VERSES 
YOU USE Em,D THATS IT :-)

GOOD LUCK! 
chorus: