Biocharge is a narrative audiovisual work performed by three dancers wearing custom sound-reactive LED costumes. The changing illumination of each costume represents the performers’ life energy and gradually reveals their individual visual identities. The work combines choreography with real-time and post-produced visual techniques, including fog projection controlled through Max/MSP/Jitter and moving light-painting imagery. Traditionally created as long-exposure still photography, light painting is extended here into motion, allowing traces of light to become part of the choreography itself. These technologies are integrated into the narrative rather than used as decoration: light functions simultaneously as energy, identity, and a visible measure of the performers’ remaining lives.