Reviews: How about the output?

Allfei: 5V 800mA ( Apr 26, 2013 18:32 )

Reviews: Is it metal?

Allfei: Yes ( Apr 7, 2013 11:10 )

Reviews: How long to be fully charge?

Allfei: About 3 hours. ( Mar 20, 2013 15:34 )

Reviews: Do i have to wall charge it be fore it charges my phone?

Allfei: Yes , it has to be charged before you use it and recharged after every use . ( Mar 6, 2013 9:58 )

Reviews: Will this charge an iphone 4? and do i need to purchase a separate cord to make it work with the phone? thanks!

Allfei: Yes it will. The device comes with a cord to charge the portable charger but you will need your charger from your phone to charge your phone to the portable device. Hope this clears it up ( Feb 24, 2013 14:40 )