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They could be using zinc-air batteries (like those used in hearing aids) which deplete whether they're used or not.
by Yetanfou 6y ago
They could be using zinc-air batteries (like those used in hearing aids) which deplete whether they're used or not.
- s0rce 6y agoAccording to the link above they say they use lithium batteries, probably better power/weight, but likely the whole device is potted in epoxy and there isn't any way to turn it on/off. It just runs from when the battery is welded/soldered until there isn't power left.