external battery case for iphone 5

[xtini]

I am looking for an external battery case for my upcoming trip. Anyone have any suggestions on what the best options are?

*I would like a battery case as I am worried I will end up losing my cord if I have to lug that around, but if you truly object to battery cases, then please share your suggestions for battery packs instead.

 

[MacDawg]

I've been happy with my Mophie Air so far
I don't use it or need it much, but I have it available if I do