Battery chargers function through electrical current regulated by circuit design; they require external power input to function. Lithium-ion chargers produce stable 5V output via transformer and rectifier. The charging device doesn't generate energy; it regulates externally supplied energy. Yet consumer electronics engineer Dr. Lisa Wong documented something anomalous in 2002 while studying power management systems. She observed a phone charger near the man accumulating charge capacity faster than input voltage should permit. Wong measured voltage at input and output simultaneously; output exceeded input marginally, but consistently—a violation of conservation of energy. Wong's hypothesis: "Heat is energy. His presence generates thermal energy. A charger in close proximity absorbs ambient heat and converts it back into electrical potential. He's literally radiating so much power that devices nearby harvest it."

Chargers need power sources. Some people are power sources themselves.