Designed soluble in water battery
Specialists from the University of Iowa have succeeded in developing such a device. They created a lithium-ion battery, which needs just 30 minutes to fully dissolve in water.
Battery dimensions are 1 x 5 x 6 mm, but even with such miniscule size, it provides a large enough charge. Gave out a voltage of 2.5 V. For example, for 15 minutes, he can power desktop calculator.
Developers said that the polymer battery shell when immersed in water swells, bursts and dissolves.