Griffin PowerDuo Reserve IPhone Backup battery users?

[Infiniti7]

Does anyone own this product that griffin puts out. It's a wall charger back-up battery pack and a car charger. Griffin makes it. It works with iPhones and iPods. Anybody have one? Just got a quick question about the product thanks.

 

[ladymcquaid]

I have one. What's the question?

 

[Infiniti7]

if your phone is at 20 percent what will the battery get you to 100 percent? how much percentage do you get out of a full charge with that battery hooked up?