Instruction: Answer the given question using the supporting document.

Input:
Question: Will this come with something to charge the backup?
Document: Completely compatible to charge the backup battery(Iphone battery charger) with the Apple USB charger plug. If you are considering getting a backup device for your Touch/Iphone, I certainly recommend getting this device.
I can't tell you how many times this has been a lifesaver. What I particularly liked is how small it is - very compact and you can use the phone while it's on without looking ridiculous. The other battery packs, while they may hold more charge, are just too bulky for me. This is perfect if you're on the go and you just need that extra bit of juice. One full charge of this backup battery can get me from 10% to about 50-70%. Many friends have asked me about it, and have subsequently went out and bought it too!
I chose this for the design and that was fine. I wanted something small that didn't take over the phone changing its appearance and size. It charged up itself fine, it actually charged up my iPhone 4 once but the next time I went to use it, it would simply not charge my phone. Instead, a message came up on my screen saying that this device was incompatible with my phone. Great. Not.But it was $15 and I felt I was just one of millions of people who got duped by an Asian company.
Just got this the other day. The Ipod touch 4 really runs out of juice in such a shorttime. I am so used to my Amazon Kindle 3 to last and last for a month before I ever have torecharge it. But...I got one of these backup battery chargers and it does add a few more hours to my ipod touch 4 which is nice. Plus I can charge this up on my computer here at work too. So for the money its a good deal. Only reason I gave it only 4 stars is that its a b---- to open up..you will break most of your nails just opening it to use it/plug it onto your ipod...but for the price, its a good deal and doesn't add much extra bulk onto your ipod touch!
this is a great way to extend your battery when needed a few more minutes as a backup. i would purchase again
I had high hopes for this but am very disappointed. It only charges my phone halfway. It's all right in a pinch but I was hoping for something more.
Used it only once so far on a trip.. It gave me an extra 50% which I was very happy with. The cover to the charger is extremely hard to get off. And it will get lost. In fact, I may just use something else to cover the prongs
Sometimes this happens without any kind of movement of the phone. Finally, the device does not fit on a phone with any kind of case, so you'll have to remove that to fully seat the battery. If it had some sort of extender or the connector was just a smidge longer, that would be helpful. Next time, when I purchase one of these (and I see myself having to, given the limitations of this one) I will spend the $40 or whatever for a better backup device.
This portable charger may seem like a good thing to buy but its not worth the money!! The charger dies very quickly and the battery will  not last long enough to get your phone up to 100%. It is not good quality at all. If you want a portable charger for your phone, i wouldn't buy something so cheap like this charger because you definitely get what you pay for
The design and use is very slick and a huge plus. Each fully charged device provides 30% to my iPhone's battery life. I was hoping for more than 30% and ended up having to keep  three for myself (I was hoping one would suffice, but alas) instead  of distributing them to my employees as planned. I have begun looking for something of similar design with more power.
Answer: This item only comes with a mini usb cable as shown. If you want to be able to charge it through a wall outlet you will need to pick up a wall charger to plug your usb cable into.