Rs.1149 for a Intex 10000mAh Power Bank
USE code mobi500 and get price 649 
+ pay using mobikwik /payumoney and get extra 5% (Rs.32)
so effective price Rs.618
http://www.groupon.co.in/deals/shopping/intex-10000mah-power-bank/687476

Offer is on a Intex 10000mAh Power Bank (IT-PB11)
Features:
Battery protection
Supports Mobile
Plug & Play
High Security and Capacity
Touch Availability
Full Compatible
Free delivery across India
Inclusive of all taxes and service charges
Product comes with warranty valid for 12 months post purchase