Best way to get portable WiFi Internet in India for light or medium users

I think this post will benefit users who are thinking to get Internet in their mobile devices.

If you are a light internet user and have multiple devices, one way you can choose is to tether your connection with your devices. This will drain battery on your device. Otherwise you will need to buy Internet packs on all the devices which will not be a cost-effective method.

My plan is to have a single connection that can be shared with all the devices so that you need only one data plan and the devices will be connected with WiFi means less battery drain. The initial investment is a bit high though ;-)

The devices you need are:

1. GSM WiFi dongle that usually supports 5 - 10 devices to be connected at once. (Sample)
2. USB power-bank. (Sample)
3. BSNL GSM connection with Internet. I chose BSNL as this is the cheapest with Rs.155 for 1GB data as of now and will support both 3G and 2G on this pack.

Setup is simple, slide in the SIM to the WiFi dongle and connect to a computer. You can add the WiFi security information (as you do while Tethering in mobile) in the page that automatically opens. You can select 3G only for faster Internet.
After this one time process, you can use the WiFi dongle in the power-bank and you can connect your devices. A 2100 mAh power bank can power the WiFi dongle for almost 12 hours.

Not just home, you can use this setup anywhere you want and the battery drain on your device will be less compared to using data in the device's connection. I believe with BSNL you can go anywhere in India and continue to use the Internet.