Used it once, and when I was taking it ...
580773
Used it once, and when I was taking it off my windshield (even though flaps were out of the car and nothing else was holding it down), one flap ripped clean off the main body.
1905380
Worked as advertized. Used only once so far, no problems!
1283464
I would give it zero starts if I could. This is a great product the first time you use it - but when you take it out for the second use, you'll find like many others that it won't hold a charge - that's a very expensive battery for one time use! If you decide to give it a go, make sure you hold onto you receipt so you can process a warranty claim!
2269762
Good stuff for the price since it will only be used once.
20547
Used once before the red was scratched and pitted.
2105786
Was only able to use it once before it broke, but it did in fact perform well while it worked. Durability was obviously an issue here.
4033238
I bought this to charge my phone while on camping trips. Well made, arrived quickly, and well packaged, too. I'm just not 100% sold on the unit yet. It worked great the first time I used it, not so great the second time. But, I am withholding judgement on the second usage because it was so beastly hot that day. It charged the phone, just not fully. There is also a lot of suspicion that the USB cable (not the one that came with the unit) might have been the problem. So, I will try again with a different cable and see if that makes a difference.
3050895
Have only used it twice, good results both times.
636903
I wish I use it as much as I thought I would; it worked great the first time
1756175
Used it only once so far, but it did the trick, and allowed me to go swimming in the ocean alone, with my iPhone and other precious items inside.
I read some negative reviews that people's items got wet and damaged, but I think it's really important to make sure the bags are not defective before the first use (as the company advises), and then to really check and double-check and triple-check the seals before going in the water.  And it's just plastic of course, so I wouldn't expect them to last forever.  Periodic re-testing is probably a good idea.
1139373
I have used it twice. The first time I noticed a small increase in energy but the second time I barely noticed anything at all.
4082990
Although not using really. One time is all it took to use. Now, just the sigth of it hushes him up.  So, I'd say it must of did its job.
4208143
Great lube, really a no brainer after you use it one time.
4535283
I used it one time and it worked. I tried to use it again and now it won't even turn on.
708369
It did the job effortlessly the first time I used it.
4515027
I liked it, the first time I used it I over inflated it so it hurt my neck.  Have found a happy medium now.
3096389
I got this to recharge the batteries for my cell phone and gps tracker while on a ten day backpack trip on the A/T. According to the specs, it should re-charge four to five times. Did fine the first time. The next night I used it again and it drained down to one charge remaining. And that charge was unable to recharge the phone. That all being said, the next time I tried it it did better. Turning the phone off while charging worked much better.