Asklemmy

44151 readers

1797 users here now

A loosely moderated place to ask open-ended questions

Search asklemmy 🔍

If your post meets the following criteria, it's welcome here!

Open-ended question
Not offensive: at this point, we do not have the bandwidth to moderate overtly political discussions. Assume best intent and be excellent to each other.
Not regarding using or support for Lemmy: context, see the list of support communities and tools for finding communities below
Not ad nauseam inducing: please make sure it is a question that would be new to most members
An actual topic of discussion

Looking for support?

Looking for a community?

Lemmyverse: community search
sub.rehab: maps old subreddits to fediverse options, marks official as such
[email protected]: a community for finding communities

~Icon~ ~by~ ~@Double_[email protected]~

founded 5 years ago

MODERATORS

[email protected]

102

Why aren't there 1.5v AA rechargeable batteries? (self.asklemmy)

submitted 5 days ago* (last edited 5 days ago) by BeatTakeshi to c/[email protected]

35 comments fedilink hide all child comments

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?

you are viewing a single comment's thread
view the rest of the comments

[–] [email protected] 11 points 5 days ago (1 children)

Yeah but they're a cheat. They're lithium cells regulated down to 1.5v. Good ones are rare, when you find good ones they're generally expensive and because they're regulated down you generally get 100% battery showing until just before they fail.

I used them for some voltage sensitive stuff, but finding a brand that held a good charge for more than even 50-100 charges was hard.

Nimh is much better for anything that won't be upset about the voltage too much.

[–] [email protected] 2 points 4 days ago

There's a type of lithium batteries that have a fixed voltage drop, meaning it will show the SoC of the lithium cell. I know about a company that just released a charger system meant for professionals that use these cells: https://klvr.no/charger-pro