You can now track your battery usage using software called CellSage. Kevin Gering from the Idaho National Lab developed the software to help gadget users trace their battery life and help them in choosing the best performing battery. The software can analyze the condition of your battery and how long will it last.
CellSage, from the words Cell’s Age, is designed to work with different batteries. It works by connecting with an app where a program runs to study the geography of the device, how it performs and its cycling protocol. Gering inferred that the temperature and geography affects the performance of battery life.
Source: Green Optimistic