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

Input:
Question: Says its good for Jackery bar but Jackery's specs say "1 amp" input and this adapter puts out "2 amp".  Is this compatible with the Jackery Bar?
Document: This charger is nice, although it says 5V and 2.1 Amp, it also reads 10W max. on the same technical label on the charger itself. I tried charging New Trend emergency charger but it took longer that charging with Samsung Galaxy charger with the same specifications.I would recommend it definitely for small devices to fast charge them.
Very Useful for the ANKER battery chargers,Good price and does what it says,the only thing need is the world wide adaptor
I use the 2.1a version and it is awesome. My Motorola Razr M takes the juice as fast the phone allows -- probably goes from 1/4 power to full in an hour. Also, the longer cord allows me to more easily use the phone while charging it. If you are like me, might have a power strip on the floor. A 6ft long cord is able to reach you as sit in a chair, etc.
My husband and I just got the Pwr+ 5V 2A Rapid Charger AC Adapter along with a portable charger for our iPhones. We appreciated the compact, well-made design and have already used it many time with no issues. We also like the extra length the 6 1/2' cable has over other brands that were much shorter. It really did charge our external battery pack quickly, and we wouldn't hesitate to recommend this to our friends and family!
First off I love my Anker Astro E5 15000 external battery, it is perfect for my Iphone 5 and my IPad, only down side it doesn't come with a charging cable. That was why I was so glad to find this little gem! It is a sturdy, fast charging adapter which was just what I was looking for: only one piece which is great (too easy to lose 2 pieces) , and then to top it off it is long enough to use anywhere!
The charger arrived promptly. It is easy to use and it works just as well as they say it does. I love it!
Not much to say here, except same high quality level as most Anker products I've purchased and now confidently expect.
Does what it says...charged quickly. Very handy for charging devices when traveling. Would recommend! Fast fulfillment and no issues with packaging.
Good charger.
It is always good to have a charger to charge my batteries.
Answer: Well, all I can say is that I use it with an Anker battery pack, which says 1.5A input current.As far as I know these new chargers, which output via a USB connector, establish sort of connection with a device being charged. And the device itself will only take whatever it is capable of.So it's not like the charger will shove those 2Amps down the device's USB connector.Your device is supposed to support whatever current is listed on the device. Otherwise it will just use as much as it is capable of.That's what I've been told.Hope this helps.