One of the main reasons why the Raspberry Pi is so popular these days is because of the size. The Raspberry Pi is so powerful in its size that desktops were required to do those tasks some 10 years back. The small size gives portability to the Pi and that is what drives us to find new applications for it. The major factor in hindering the portability of the Pi is the power supply. Since the Pi is driven by a 5V supply which is obtained from USB chargers connected to mains, the Pi cannot be truly mobile. In order to take it mobile, people are using it with Power banks and batteries. There are few people on the Internet who have posted the current drawn by the Pi under different circumstances and which could be helpful but it doesn’t give an estimate of how much a Pi will run on a particular batteries with a particular project. In this post I will try to compile the run time of Raspberry Pi  running under different circumstances using Power Banks. Although I am an Electronics engineer but I don’t work on Electronics, so I will not concentrate on current drawn but rather run time in hours. Continue reading →