A:AnswerI'm sorry I wasn't clear. By "emergency power source," I meant, will I be able to USE the phone while it's plugged into the device, using it as a power source after the phone's battery has run down?
A:AnswerI don't know yet since I just purchased it not too long ago. However, I have another power bank (Mophie) that I have been using for more than 4 years, and it is working perfectly. I don't have to charge it everyday.
A:AnswerThe powerstation XL battery has a total of 2 USB ports, and can charge up to 2 devices at the same
time. The port on the right charges at speeds up to 2.1A and left port charges at speeds up to 1.0A.