Magsafe Battery Pack not charging my phone

I have had my Mag safe battery pack for less than 6 months, and it will not charge my phone anymore.

I have charged it a few times already, I know the charger is working since it shows a green light when plugged into plus I use it with my other devices. When placed on my phone it recognizes it but the battery pack appeared empty.

Also, I does appear to charge when I plug the charger into the battery pack and to the phone, so it seems like the battery is not holding the charge.

Pretty lame for a $100 device.