1. GPS Battery CHARGER

2. Picture from: Project snowstorm
As we know, project snow storm has been experimenting with ways to let the GPS signal last longer. They have tried miniature windmills, and solar panels, and they need new ideas. So I have researched on ways of charging devices and I found out electrolytes can power a device.
Picture from: Project snowstorm

3. The basics
What is an electrolyte you ask? Well, an electrolyte is a substance that contains ions within itself. One example is salt. Electrolytes are most commonly demonstrated with water, when the salt gets dissolved by water, an energy voltage will power a device connected to the voltage. This makes salt a electrolyte. Substances like sugar, do not power the device. This makes sugar, a non-electrolyte. Some substances give very little power those are called weak electolytes
Picture from: IndiaTimes

4. Examples of electrolytes
Non- electolytes
-salt water -hydrochloric acid -sodium hydroxide -gatorade
-distilled water -sugar water -milk

5. Conclusion
Therefore, after my research, I have found out another way of battery source that project snowstorm could use for their GPS backpacks.