As with all other battery packs here is a 5V-2.1A and 5V 1A USB port available. I recommend the 1A port load for iPhone and 2.1A for iPad. You can also use the 2.1A for iPhone, then the iPhone also loads a bit faster, but it costs the Ultra Pack some extra capacity.
Advantages:
- It looks is very high and can be left lying loose at the business meeting on the table
- It is not difficult with 267g other battery packs weigh on average 400-500g
- It has an optimal size
- 10,000 mAh rich by 6-7 charges iPhone 5S (5.5 charges iPhone 6 because more battery power)
- I have an accurate indication and always know where I stand
If you considered you to buy a battery pack and travel a lot since then that's exactly right. It's not too heavy and weighs half a kilo and it is also Ruckzuck again ready and does not have overnight to the wall socket!