Instruction: Answer the given question by extracting information from the supporting document.

Input:
Question: Does this product work well for iphone 5?
Document: It's a good product and it arrived on time, but sometimes it doesn't work. I have to plug and unplug like 5 times until it start charging my phone. But is good though.I can charge my phone twice with only one charge of this portable charger. :)
The description scared me - so many specific devices it could be used for made me worry there could be many others that wouldn't work. And I wasn't positive I had the specific generation or model listed. But as long as one end of your charger cable has a USB plug it can be plugged into the iPower Juice and it will charge. All iPods, iPads, the Paperwhite Kindle - only the iPhone 5 requires an additional cable (the Apple Lightning Cable for the iPhone 5).
Let's face it - the iPhone battery (especially the iPhone 5) is nothing to write home about. In fact, writing home could be a problem if you run out of juice in the middle of an email! The OPSO iPowerJuice is a well-made, well-designed life saver. I can get at least two full charges for my iPhone 5 from one fully charged OPSO.
My only caveat is that it doesn't come with an adapter for the Apple Lightning plug - but that's no big deal because you can use your existing cable to power up your iPhone 5. It does come with a 30 pin adapter so if you have an iPhone 4 (or iPad, or iPod), you're good to go as well. It's hard to imagine a better backup battery.Of course, with any battery, longevity and ability to continue to retain charges is something that is only proven over time.
That said, this seems like a remarkable product. It brought my iPhone 5 to almost full charge from 38% in less than 45 minutes and still showed a full charge. And the price is right - I'll be buying another for my wife!
Excellent product small easy to bring along for me at work sometimes having 14-16 hour days it keeps my iphone alive no issue iv gotten 3-4 charges fully out of this little unit and still had juice left the directions are not written the best but it's pretty straight forward when u click each letter represents the % 100,75,50,25-
The original unit I received did not work as well as the reviews stated it should. When I contacted Aibocn customer service they immediately sent me out a new power supply and a post payed return label. The new unit works very well and I am very happy with it. I would definitely recommend not only the iPower Juice but the company as well.Rick
After using this battery charger once a week for the past 5 months, it no longer works&#8230;  I will not be buying this product again
When i got the product i felf exciting but then i notice that was made in china i was so disspointed. Now i gonna watch how long will maintain. I can not 100% sure that will works well later
I like this battery i can charge my iphone 5 twice in one day nice battery backup and you can used in any cellphone only you the usb cable.
Answer: You need to use the lightning to USB cable come with the iPhone 5 to charge.  This product did not have the cable for iPhone 5.