Hello, Gratzio.
Thank you for visiting Apple Support Communities.
Battery life can be difficult to troubleshoot as multiple factors contribute to how long a charge can last. Graphic intensive applications, display brightness and data connectivity are just a few of the items that can cause the battery life to decrease rapidly. I would need to know a little more information about your usage patterns to give you and idea on how to maximize battery life. However, here are some tips on how to adjust settings and charge the device that may help.
If you can’t charge your iPhone, iPad, or iPod touch
Maximizing Battery Life
If you still need assistance, please see the Get more help section of the first article above.
Jason H.