The solution to avoid the blackout.

This additional battery is truly essential if like me there will be a 3 year old and an iphone ...
most applications require energy, whether viewing a cartoon drawings or small games, the screen stays on and the very short battery life.
Plus it's always when you wait in a waiting room that we realize that we did not charge his phone.

-first Approach:
The Duracell Portable USB battery charger is quite nice aesthetically, the space equivalent to a phone is still imposing, fortunately the side plug for the 220v is removable. A small friendly green lighting switches when you load your device. The Duracell battery charger is equipped with a smart entry and a well differentiated output by two types of connectors: USB and mini USB on both sides. Is also provided a two-terminated cable connection and even a micro USB adapter.

-A Use:
Of course we must also remember to load the "shipper", but the advantage is that it keeps intact its long load with a switch if you do not use it quickly.
Some in the comments charger think it merely serves as an intermediary between the electric current and a phone, you need not have at least unwrapped this charger for not realizing that you have about a backup battery capable of recharging, permetere or the direct use of your phone.
If like me 1800 mAh means nothing much, just know that this corresponds to more than 2 loads for your Iphone.

It is also nice to be able to charge two device (two iphones in my case a 3 and a 4) and especially that it does not take more time than a load!
You need to be any specific adapter (iPhone for example) in order to load an aircraft not using the connectors provided, but you tighten amazed how many use the mini and micro USB. The mini / micro USB adapter is easy to misplace.

When charging the battery Duracell red light changes to green when fully charged, as with all the batteries of this type the first charge must be complete for these capabilities remains intact, it will also occasionally allow it a complete discharge.

-After A few weeks of use:
And also some falls, the balance is still positive, just the burden of Duracell battery seems long, until 3:00.
I use it now for several months and the battery has lost its longevity, the concern is to remember to recharge, and also that there is no gauge to know what remains as capacity Loading.

-In Summary:
A gadget that really helps out if you have an important use of your phone, or if you do not think about the load every day, in fact a kind of emergency reservoirs.
The ability to load on the 220v as a computer via a USB port puts you away from the fault.