Figure 4
From: Transparent Bendable Secondary Zinc-Air Batteries by Controlled Void Ionic Separators

(A) I–V polarization/power density curves, (B) Galvanostatic full discharge profile of the transparent ZAB without any applied force. (C) Photo of a white light emitting diode (LED) powered by the transparent ZAB cell. Simple voltage transformers were used to raise the ZAB’s voltage to supply the required higher potential to light LEDs.