One feedback from my customer-Stevie Ridep
"I was a bit skeptical about the effectiveness of these batteries. I just returned from a trip to China with my family. Between all of us, we had two iPhones, two iTouches, and two iPads. Given the 12-hour flight, I bought two witkey External power bank. I was amazed by how quickly these batteries charged the iPhones and iPod touches. The iPads took longer, but I found that I could plug the iPads in with a small charge, and the iPads seemed to run on auxiliary power when connected. Great product. I highly recommend it!"After i know this from him,i was so happy that my customer loves our power bank.