Potable power for iphone 4

[YY247]

I need a long lasting portable battery for my iphone 4.I dont mind how big it is.Thanks.

 

[Gregoris]

there are some cases that act as a second battery

 

[Soxty7flh]

for the 4? anybody know what they are called?

 

[Gregoris]

i know they existed for the 3gs im not sure about the 4. the only other thing i can think of is to charge on your laptop if you ever carry it around or turn everything off on your phone like bluetooth 3g..etc or wifi if you need the 3g dim the brightness more

 

[DannyBoy]

This is the one I use. Works great!!

http://us.kensington.com/html/15458.html

 

[Gregoris]

that looks pretty good

 

[d4ni3lifon4]

This looks good too...to me at least.

http://http://tekkeon.com/products-mypowerall.html