Best and powerful external battery for android / iPhone

The USB external batteries are spreading more and more, because of the many devices and batteries are not very durable. 
Needing a sort of first aid kit today we offer external battery usb most powerful on the market, which you can use for your tablets, smartphones and other mobile devices. (Not pc) 

batteria esterna usb per android iphone e wp

Among all batteries on the market, the Anker Astro E5 is the best around, thanks to its capacity to 15,000 mah, which allows you to charge such a iphone 5 7-8 times a nexus 5 5 times and a tablet about 3 volte.Inoltre weighs only 317 grams, there are plenty for the capacity it offers, making it extremely easy to carry around 

The battery has dual output, a 5V 2 / A for fast charging, and another 5V, 1 / A, the battery promises over 500 charging cycles. It 's always possible to know the status of the battery thanks to the LEDs, which indicate the battery status. 

If you want something cheaper: List USB external batteries

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