There have been many articles by myself and others on SurvivalBlog that discuss the use of mobile electronic devices such as radios, flashlights, cell phones, red dot sights, drones, cameras, etc. for emergency preparedness and disaster scenarios. The one thing all such devices have in common is that they require power of some sort, usually in the form of a battery, and without power those devices are about as useful as a paper weight (I guess you could use them as projectiles). Understanding how batteries work and how to best manage them can help ensure you get a long and … The post Mobile Device Battery Management – Part 1, by J.M. appeared first on SurvivalBlog.com.