3 ms·
> Twenty seconds after adding two drops of water the battery reaches a stable 1.2 volts, a little less than 1.5 volt AA battery. The charge lasts about an hour,
by stevenjgarner 4y ago
> Twenty seconds after adding two drops of water the battery reaches a stable 1.2 volts, a little less than 1.5 volt AA battery. The charge lasts about an hour, after which the paper dries out. Users can get another hour at 0.5 volts by adding a couple more drops of water.
This is so great. How many times can it be "recharged"?
- moffkalast 4y agoAlso what happens if you enclose it in a ziploc bag full of water? This adding of water thing seems weird to demand from the end user.
- stevenjgarner 4y agoYes or a small amount of water that is released when a user pulls a release tab.
- Clent 4y agoAlternatively, what are the availability of the materials to make these labels? I assume these are meant to be disposable like a package label.