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

submitted 3 months ago* (last edited 3 months ago) by [email protected] to c/[email protected]

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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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[–] [email protected] 11 points 3 months ago (12 children)

I've reached the point of absolutely hating rechargable batteries. Between their ghost discharge, and the fact that I don't go through as many batteries like I used, using normal alkaline batteries seems to be the best for me anyway.

[–] [email protected] 10 points 3 months ago* (last edited 3 months ago) (5 children)

Huh, I use exclusively rechargeable batteries in everything. Works great.

Except the smoke alarm, that one complains if I don't use lithium

[–] [email protected] 1 points 3 months 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.