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With handy apps, Safari, iTunes and Siri, the iPhone is more than just a phone, and many times we don't even realize how much we're using it when the battery suddenly dies and the day has only just begun.

Battery life for the 5S, 5C and 4S range from 9-10 hours with Wi-Fi. Their lifespan is shortened by the use of additional functions and the rising temperatures of the hot summer months. With real-life 6 hours or less, charging the iPhone starts to get a little annoying. If you don't want to carry the mains power with you all the time, we have found the ideal solution for you.

The Mophie brand is a pioneer in external batteries for iPhone, and quite rightly so: in the minds of users, it is a guarantee of quality and good reviews spread about it. Today we are going to look at one of the latest models, the Mophie Juice Pack Air for iPhone 5/5S, which is currently the thinnest external battery from Mophie ever.

The main advantage of the Juice Pack Air is up to 100% longer battery life for the iPhone, which is guaranteed by the lithium battery with a capacity of 1700 mAh. If you work and need to take calls at all times, are on the go or watch videos late into the morning, the 2x battery life is a feature you will appreciate and it really worked for us.

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Using an external iPhone battery is simple: just put the phone in the "case", i.e. the Juice Pack Air, and turn on the switch on the back. This will change the color of the LED from red to green and the iPhone will start charging. When all the capacity of the external battery is used up, you can charge both the iPhone and the Juice Pack Air together via microUSB in just three hours.

Charging is indicated by the LED diodes, which start flashing when connected to the source. They will turn off after 30 seconds of charging and will only turn on again when the Juice Pack Air battery is 100% charged.

The Juice Pack Air comes in four colors: black, red, gold and white. All colors except white have a matte surface that is pleasant to the touch and prevents the iPhone from slipping out of your hand; only the white color is shiny, reminiscent of the surface of a refrigerator, and only the burgundy color has the special property of slightly changing its shade when the case is rotated. The case is also ergonomically shaped, so it fits perfectly in the hand.

Another benefit is that the Juice Pack Air doesn't add much to the thickness of the iPhone. The case is fatter, but not dizzyingly so - so Mophie keeps its word and deserves the epithet "thinnest and lightest external battery". It measures 6,6cm x 14,1cm x 1,6cm (compared to 5,9cm x 12,4cm x 0,76cm for the iPhone 5S) and weighs just 76 grams (iPhone 5S weighs 112 grams). Naturally, the battery also serves as protection, so your phone is safe from dirt, scratches and bumps.

You can find cheaper external batteries on the market than the Juice Pack Air. However, the benefits you get for the "extra charge" certainly include functionality with the new firmware - where Chinese products can cause problems and charging the battery can be a problem when plugged in, Mophie is a guarantee of quality, which is evidenced by the small number of complaints.

And there's a little bonus: the Juice Pack Air doesn't have a negative effect on the sound quality when the audio is on through the loudspeakers. On the contrary, Mophie designed the external battery to make the sound quality more vivid and full. The battery has no effect on the antenna and synchronization either; it is the same as in normal use and charges both devices.

If you're traveling this summer or you're worried about the hot air taking a toll on your battery life, the Juice Pack Air is definitely a good choice. The price is CZK 1 and you can buy it via InnocentStore.cz.

Where you can use Juice Pack Air

  • on vacation: reading news, books, using apps
  • at work: when you can't afford not to take a call or answer a message
  • for entertainment: watching videos, listening and streaming music
  • during a normal day so that you don't have to carry the AC adapter with you

Advantages of the Mophie Juice Pack Air

  • extend iPhone battery life by 100%
  • slim design
  • ergonomic shaping
  • non-slip surface (except white color)
  • weighs only 76 grams
  • charging both devices together (iPhone and Juice Pack Air) within 3 hours via microUSB
  • better sound quality when using loudspeakers

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