Are these Flash Chargers safe to use and effective?

[TH55]

http://nomorerack.com/daily_deals/view/270390?n=1663&pid=1&pc=54782

Also is this price too good to be true?

 

[Radiating]

http://nomorerack.com/daily_deals/view/270390?n=1663&pid=1&pc=54782

Also is this price too good to be true?

Price is too high product is a POS.

It will only charge the iPhone one and a half times max. It will take 9 hours to recharge (based on the capacity and the max charge rate of micro USB), and it will take around 6 hours to charge your iPhone from empty to full. It's a terrible product, much better to get a battery case.