Anker PowerCore Portable Charger 15600mA..

High Capacity: Weighs as little as a can of soup (13.3 oz) yet charges the iPhone 6 five times, the Galaxy S6 four times or the iPad Air almost one and a half times. Safely recharges with a 2 amp output charger (most phone chargers have 1 amp output)
Amazon Product ID: 361424_PID
Today's Price at Amazon : US$ 32.29
Delivery to Sri Lanka: Within 8 to 11 business days
Weight : 1 lbs