Currently, the UV lamps that are found on the market consume batteries. The advantage of this RavPower stick lies in the fact that it is rechargeable. So you no longer have to worry about changing batteries (but it will still think recharge his stick regularly, no not magic ...).
2 uses:
* Recharge a smartphone like any other external battery with its 1A output (do not expect to charge an iPad, it will be very long)
* UV lamp for the detection of counterfeit notes, tasks on clothes / sofa / carpet / ..., old holes made on your walls (is the wall safe?)
I had fun with the UV lamp in the dark, and the applications are endless: watch your walls in broad daylight, they have smooth and healthy air, while at night with the UV lamp, you will see all the old holes drilled by previous owners, all masonry problems is quite fun. Observe a tissue, you will see those tasks that have not been treated properly. Visualize a sink, sink, shower, toilet, and see every corner and washed less easily, they stand very well under the UV lamp. Observe a ticket, you will see the special inks used to design the (not visible on an infringement). Finally, for all that is in the animal kingdom, you will see traces of urine left in the corners of your favorite rodents, cats, dogs, etc ... In short, use is infinite, UV let you see what we do not usually see in bright light (it's like the disco lights that we see white fabrics flashy, dandruff on the shoulders of neighbor, poorly sewn fabric with white son everywhere, etc .. .).
A good tool 2 in 1, however, I find the price a little high, so I would say that we must have a real utility of the UV lamp, otherwise it is better to prefer external batteries without UV portion (eg RAVPower 6000mAh External Battery Charger ® provided with the iSmart technology with built-in flashlight 5V 2.1A for iPhone 6 more, 6, 5S, 5C, 5, 4S, 4, iPod, Samsung Galaxy S5, S4, S4 mini, S3, S2, Note 4, Note 3, Note 2, Nexus 5, Nexu ...)
Finally, the burden of external battery with an iPhone charger, count of about 3 hours - 3 h30 (I was not able to post more precisely but it is less than 4 hours). Otherwise batonnet allowed me to recharge my iPhone 5S to 120% (from 0% to 100% + iPhone 5S launch a second charge 0% to 20% of iPhone 5S).