In my testing, I found how the Power Bank took 4.5 hours to charge when in combination with the included 5v/1A USB wall plug when fully discharged. The included USB charging cable is very the little transformer. It's capable of charging an Apple iOS device as well as any device using a micro USB port.
In my charging tests I ran my iPhone 4 down entirely until it shut off completely and was unable to start up. I then plugged my iPhone in the fully charged Power Bank using the included USB cable. With minimal using the iPhone while charging, the iPhone could charge up to 90% into two.5 hours. I found these results to be more then acceptable for such a small device.
Poldera states that this Power Bank LED flashlight is capable of running for further then 9 hours continuously. I did not personally test this aspect with the device. However, considering it surely could recharge a completely dead iPhone 4 approximately 90%, I think their 9-hour flashlight life of the battery is probably towards the mark. The flashlight power button needs to be held down for about 2 seconds correctly to activate. This is a fantastic aspect to prevent accidental flashlight activation whilst in a backpack or pocket. Unfortunately, if this preventative feature is combined with a button that is certainly nearly completely flush while using body from the flashlight, seeking the button without investigating it or while in the dark becomes nearly impossible. On multiple occasions in doing my tests of the flashlight, I had trouble choosing the flashlight button at night, and this is the one place you require a flashlight. It becomes a really counter productive catch-22 situation when you need a second flashlight simply to find the button of this flashlight. Since the button doesn't activate the flashlight without holding it down for any full 2 seconds, I think the well-known answer is the button ought not have been flush with the flashlight's body. If it was raised ever so slightly, the person could have located where it had been without the need to look at it. I also were built with a problem using the lens face from the flashlight without having any protection whatsoever. This, in my opinion, is a long-term drawback which will result in the lens becoming a lot more scratched as time passes. Also the product's deficiency of shock absorbing rubber coating, waterproofing, rubber plugs to the ports and simply no place for any lanyard make this less desirable for anyone going out into bad weather or perhaps the wilderness.
With that being said, the Power Bank is fairly a versatile device. The ability to charge a dead iPhone up to nearly full as well has have a 1W LED flashlight all crammed into a package (that is certainly not any greater than your average pocket flashlight) is an amazing feat. Unfortunately, the steep cost, deficiency of ruggedness and hard-to-use button choose this a bit of a tough sell. But if you want to have an emergency backup flashlight/phone battery and you don't mind dropping a Benjamin then the Power Bank could possibly be exactly what you'll need.