The u2o i-Up Portable Battery Pack is one of the best portable iPhone chargers we’ve seen.

9/10

Pros: The u2o i-Up Portable Battery Pack has one of largest battery capacities we have every seen! A whopping 6400MAH! That means the battery is capable of charging an iPhone 5 full times and an iPod Touch 6 full times! Despite the fairly large size, the i-Up has a very sleek design and the glossy black finish gives it a modern feel. It’s less that 2cm thick so it will fit in to the average pocket very nicely. You will also receive several charging tips and cables so this product is very versatile as it can charge multiple devices.

Cons: The Battery is just shy of £50 in the UK which is pretty expensive but you do get alot of power for your money. Due to the high capacity, the only way of recharging the battery is via an AC adapter and not via USB.

Overall: If you are looking for a high capacity multi purpose external battery pack, the U2o iWalk 6400mAh emergency battery charger could be exactly what you are looking for. The product is designed to allow you to charge many devices away from a physical power source making them ideal for outdoor activities. We really like this product and therefore give it a very well deserved, 9/10!

http://www.ultimate-travelgear.com/

http://www.u2o-uk.co.uk/products/mobiles-pda-gps-mp3/u2o-iwalki-up6400.html/u20