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This press release is quite misleading... the only novel aspect here is "flexible". It's less efficient than the existing rectenna solutions. And it's just as useless unless it's placed directly next to a WiFi router that is experiencing unusually high load. A single AA battery can deliver 40uW for about 4 years, continuously.


And if you forget the battery in those four years (which is often) when it finally fails you find the inside is full of chemical garbage.


Use a carbon zinc dry cell for things like that, they won't leak like other alkaline battery types. Bit lower capacity so you'll have to replace them more often but they'll not lead to destruction of the device either.


or if you really need higher capacity, a lithium battery.


Yeah, you probably want to avoid alkaline, and use a NiMH or lithium primary. E.g. the CR123 lithiums are usually rated for 10 year shelf life.


Indeed, for AA applications the Energizer Lithium ones are great (“other brands exist”).


then don't buy an alkaline battery?




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