This document discusses biobatteries as an alternative energy source. It begins with an introduction and overview of batteries and types. It then defines biobatteries as electricity generation devices that use energy sources like carbohydrates, proteins, and amino acids through enzyme digestion. The document discusses two types of biobatteries and provides examples of sugar batteries and batteries using blood and sweat. It outlines advantages like being low cost, biodegradable, renewable, and eco-friendly. Applications mentioned include powering medical devices, Sony using sugar batteries in walkmans, and use in biochips. The conclusion discusses potential integration into devices and how biobatteries could help developing countries like India become more environmentally friendly.