Charge is not the same as useful energy

Charge is not the same as useful energy
Silent captioned film. Concept artwork, not experimental footage.

00–07 seconds: EXPLAINER / 01
Charge is a quantity. Power is a rate.
Q = ∫ I dt     P = V × I A voltage reading alone does not establish delivered power.

07–14 seconds: EXPLAINER / 02
Follow the same load. Follow the same time.
Measure voltage and current simultaneously at a defined load. Do not multiply separate open-circuit and short-circuit readings.

14–21 seconds: EXPLAINER / 03
Useful energy is measured over time.
E = ∫ V I dt Report the interval, missing samples, uncertainty and supplied resources.