This will teach you how to make a charger case for any phone. (Note, it needs to be able to be charged through a USB port)
Step 1: Materials
You will need:
1 USB connectable battery
1 phone case for your phone
1 short charger cord for your phone
A way to secure the battery to your case eg; super glue, Blu tack etc.
Step 2: Connecting the Battery
By using whatever you have chosen to connect the battery to the case, stick it to the case and make sure it is firm
Step 3: The Cord
Take your short charging cord for your phone and plug it in to the usb port on the battery if the battery has a keyring (like mine) just put the wire through the keyring
Step 4: Insert Your Phone
Simply place your phone into the case and plug in the wire.