Power Energy+Plus - Build and rebuild custom-made battery belts. Energy Scavenging with Shoe-Mounted Piezoelectrics - Article on how to generate electrical energy by walking. Human-powered wearable computing - Article describing the physical limits of generating energy directly by the human. Making a battery pack adaptor for the M1 HMD - explains with photos how to adapt a model-building battery pack for wearables. NRG Research - Produce several battery belts and vests (and professional video lighting equipment). Catalogue online. Power