Translations:AY Honors/Robotics/Answer Key/72/en
From Pathfinder Wiki
Though perhaps other power sources can be used, the main sources of electrical power for robots are batteries and photovoltaic cells. These can be used separately or together (for practical applications, most solar-powered robots will need a battery backup). The important part is that the power source must be continuously reliable since most robotic applications have a significant level of automation. That means that if they stop doing the automatic job that they are programmed to do, the robot ceases to function. Thus, in most situations, there are "backup" power sources in addition to the main or primary source. Classroom robots are usually run on simple alkaline batteries or li-ion batteries. (Source)
