I would like to know the recommended capacity in a power bank to charge my iPhone 4S on the go.
I've seen power banks with over 4000 mAh of capacity. Wouldn't that damage my iPhone, since I read that the iPhone 4S has a battery of 1430 mAh and the charger is 1000 mAh.
Wouldn't the recommended capacity be around those values?
And one more question, how do we calculate how the iPhone would charge? For example:
I have a friend that has 2 power banks, one of 4400 mAh and other of 2600 mAh. She says that she can charge her iPhone twice to 100% with the 4400 mAh power bank and she can only charge to 80% with the 2600 mAh.