Battery or Capacitator? Has anyone actually opened up this flashlight and checked to see if it uses a battery or capacitator to store its power? For that matter does anyone know of a dynamo-type flashlight that uses a capacitator rather than a battery?
The Illuminator crank light uses one Lithium-ion button cell rechargeable battery. See my "Customer Image" to see how the battery looks like.
It does not make economical sense to use a capacitor to store power for a LED flashlight. Even with a 1-Farad Super-Cap, it can only substain around one minute of light. Check out the equations yourself:
By definition: C= dQ/dV dQ = integral of current over time = I*t (if current is constant) Let C=1F, dV=1V, I=0.02A, we get t=50 sec.