This is the advanced/ long-life version of the standard Air/Saltwater battery.
AIRBATX science set contains the essential materials you need to perform the air/saltwater battery experiment and demonstrate the production of electricity for more than 24 hours. This kit contains four flat magnesium electrodes and four iron electrodes. You can repeat your experiments with the same set of materials at home and in school for a total of 24 hours or more.

Includes 4 magnesium electrodes, 4 Iron electrodes, connecting wires, Multimeter and super bright LED. You will need additional materials including plastic container, saltwater and hydrogen peroxide(optional).
Hazards: Magnesium is a flamable metal. Remaining salt water may contain hazardous materials. Avoid eye contact and skin contact with the remaining saltwater.