Works good on my note 2. Takes 24 hours to charge 100%. One charge to 100% on my note 2 takes less than an hour. Worth the price, go for it.

Satisfied with my decision to buy this product.. A great product ..
Thanks Mi for bringing such a beautiful product
Pro's
Good backup
provides up to 6 recharges for my htc
nice design

cons
the cable provided is not lengthy enough
no adapter provided
the casing is very shiny, tend to slip from hand.. a pouch is recommended

deliverd 5 days ago from date,
packing was good and working smoothly charging capacity about 10400mah but at all it is workong fine and will be.

Purchased it from flipkart and gifted it. It's well built, good backup and it's reliable though its a chinese product.

Yes, it takes a lot of time to charge, so i recommend using a charger with current rating of 2 amperes and be patient.

It works well - quite handy and useful.. I wish it had one additional charging point so that it can charge more than one devices simultaneously.

The product came in excellent packaging . The power bank itself has a premium look and feel. Looks more like an apple product. Simple and easy to use. With this power bank in hand you are never stranded without power .Only Con is saw is that the power bank loses charge faster than expected.
But at this price point it is still better than other brands. Go for it.

I waited for this power bank more than 6 months, finally this came in to the stock and I purchased it immediately :)
Pros and cons:
• The build quality of Mi-Power bank 10400 is superb
• Led indicators works as mention in U.M
• Little bit heavy and slippery, battery cover is needed badly
• Because small size can carry any were easily

i bought this product & I am fully satisfied. Before purchasing this power bank. i went through a lots of websites in order to see where i could buy this for lesser price. though some of the websites provide it for low price, the name of the product was somewhat different. To verify i read the comments of the product. I found many of them were fake & with lots of faults, even on flipkart the same were found. while ordering this product i had a doubt whether i'll be getting the same or the ori...

This is my 1st Xiaomi product and i am totally impressed by it.
Feels like i am using an Apple product. :P

Its sleek and portable. Charges my OnePlus One 3100mAH battery from 0-100% in 2hrs which is really amazing!!!
Power bank takes 4-6hrs to charge completely which for me is not an issue.

I would rate 4 stars to MI powerbank and 5 stars to Flipkart for their exceptional service and delivery!!

Bought in September 2014 and have been using it regularly for the past 8 months.
It easily charges my iPhone 5, 4 times.
I am not technically strong enouigh to talk about the Efficiency % of this charger, but it does what its supposed to do.

I think there are better products available in the market now with LCD screens, fancy features, more ports, better prices etc.