any charging case like this for nexus 4?

[jinjin12]

is there any extended battery case like this one but for the nexus 4 out right now? Daily Deals | One Deal A Day | Dailysteals.com | Mobile

i could use something like this

 

[Hubertsng]

There probably aren't any cases but there are some things that can charge your phone without an outlet. Not really that new but vaas mobile is a pretty handy one and pretty portable.