Wireless charger for my Iphone 4S?

I live in Nepal and we have power cut all the time. Like 10-12 hours a day and I barely get to charge my phone during those times. I play candy crush a lot & my battery runs out quickly. I have heard about wireless chargers which can be used during these times but i don't know where to buy them. Any idea?

I have iphone 4s wireless charger and its excellent. It charges my phone quickly and I take it everywhere. It is my emergency back up power. I got mine from http://www.choetech.com/wireless-charger-for-iphone-4s/ My iphone4s is white so I got the wireless charger pad in white color. You can also get it in black if you want. It is QI standard and weighs about I think 30g. You can use it during powercut as well. It will be very useful to you since you said you have like 10-12 hours power cut. Why don't you give it a try. I'm sure you will love it.