2 of 3 people found the following review helpful
This is a great way to double your iPhone 5's battery life,
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This review is from: mophie juice pack air Compact Battery Case for iPhone 5 / 5S - Red (Accessory)
This is a quality item, beautifully made to match the quality of your iPhone. It increases the size and weight of the phone, so it might feel a bit lumpier in your pocket. But actually it makes the phone nicer to hold. It approximately doubles battery life (basically it contains a battery virtually identical to the one in the phone) which is a real benefit.
For me I don't mind the extra heft - it's hardly noticeable in daily life - but I am slightly annoyed by the fact that this has a micro-USB connector, not an iPhone 5 lightning connector. And you can't get at the phone's lightning connector without removing the phone. So you need yet another lead for charging! Doh! The advantage is you can charge with any of your friends' Android or Blackberry chargers (which are micro USB). The disadvantage is if you want to use your iPhone charger you will need to put the supplied micro-USB lead into your iPhone's charger instead of the lightning lead. Not a major problem but something to be aware of.
Overall, very good.