Joule Thief LED Kit – Assembled – For Stem/Science Curriculum – Science Fair
Works with any 1.5v battery: AA, AAA, C, D
Lights up an LED with the energy left behind in ‘dead’ batteries
Designed in the USA
Excellent for STEM Class Curriculum or for a Science Fair
Operational Range 0.35 – 3.0 Volts
Assembled Joule Thief Kit – Ready to go out of the box. Extracts the last bit of energy out of a dead battery.