A water-activated battery is a disposable reserve battery that does not contain an electrolyte and hence produces no voltage until it is soaked in water for several minutes. == Description == Typically, a large variety of aqueous solutions can be used in place of plain water.
A water-activated battery is a disposable reserve battery that does not contain an electrolyte and hence produces no voltage until it is soaked in water for several minutes. == Description == Typically, a large variety of aqueous solutions can be used in place of plain water.
Source: Wikipedia "Water-activated battery" · CC BY-SA 4.0
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