Construction- The battery pack is made of brushed aluminium and it looks great. I like the fact that manufacturers are now moving to aluminium (like apple) and it is 100 times better than the cheap plastic looking devices we used to get. But even though the finish is good, the build is not perfect. the battery i got had rough edges and there were some gaps in construction. But still i will give the construction a 4 out of 5.
Battery Backup- Now we are all buying this battery for the battery backup it provides. 6000mah means it should charge a iphone 6 plus at least 1.5 - 2 times. But in real world testing, the battery died after charging my iphone 6 plus from 0% to 66%. I was expecting at-least one full charge for my phone. So from a battery backup perspective i will give this product a 1 out of 5, as it doesnt deliver 6000mah. (maybe my product was defective, but while going through all the reviews in amazon i found that no-one is getting the rated 6000mah battery backup)
And my biggest gripe other than the lack of adequate battery backup is the way Innogie tried to use a single battery to display the amount of charge left. I am still trying to figure out how this is supposed to work. The manual says it will have 3 led's but i see only one. So maybe my battery is defective. Because of this i will give the battery a 2 out of 5 rating
Video Review - https://www.youtube.com/watch?v=ndRTq2n