I have had 2 piggy back battery rechargers for my iphone which degraded to only half charging my iphone within 6 months

Great external battery would recommend to anyone i have used it to charge my phone kindle ipod when out for such a little device it packs a punch you just need to ensure you take the right cables along with you

Both my wife and son who is at college have one of these in their bags and it just give you piece of mind that if their phone runs out that they can connect this up if required