I had ordered AMBRANE 10400 mAh power bank from flipcart 6 months ago for 1000 rs from flip cart .I have a mobile of capacity of 2100 mAh and I often uses 2 to 3 times daily to connect my phone whenever the charger isnt available at my place.
The Ambrane power bank is not a good power bank because it charges the phone very slowly from 2.1 mAh input while charging my laptop and The power bank supply last for the laptop not more than 1 hour if the power bank is fully charged.
The charging output for the phone is also low from 1 mAh output and takes more than 2 hours for charging the phone upto 85 percent.I have also attached the photos of by power bank.
The phone take at least 2 days to charge itself from 1 mAh power supply .I have to keep the powerbank for charging for whole sunday to get the powerbank to be atleast 50% charged.Not a good power bank as compare to sony and other good chargers*