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Why aren't there 1.5v AA rechargeable batteries? (lemmy.world)

submitted 2 days ago* (last edited 2 days ago) by BeatTakeshi@lemmy.world to c/asklemmy@lemmy.ml

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I bought a bunch of eneloop pro, but using them in connected thermostats is always displaying "low battery" even after just fully charged. This is when I discovered that they are actually 1.2V

It really came as a surprise, is there a catch? Are they only good for low power stuff like remote controls?

Edit: it seems they do exist in lithium. Question remains why are the NiMH only 1.2v and why are they the most widespread?

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[–] Analog@lemmy.ml 1 points 1 day ago (1 children)

Google seems to have set their nest protect units to need six lithium AA non-rechargeable cells. Which is 1.8v, not 1.5v. You put in completely fresh batteries verified with a multimeter at above 1.5v (1.58v iirc) and they’ll complain about it.

I bought lithium rechargeable and they’re 1.5v. Which seems reasonable. I wish all of ‘em would be one standard.

Feels instead like we have AA-, AA, and AA+.

[–] Evotech@lemmy.world 1 points 1 day ago

Huh yeah, guess I got lucky when I purchased extras for mine.