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Single-use e-cigarettes contain batteries that last hundreds of cycles despite being discarded (techxplore.com)

submitted 10 months ago by throws_lemy@lemmy.nz to c/technology@lemmy.world

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[–] kent_eh@lemmy.ca 58 points 10 months ago (5 children)

A few of us electronics hobbyists have been collecting them (when found discarded on the street) to harvest the battery for re-use in other projects.

Yes they're nasty, but I pick them up with a dog poo bag and clean them before cracking them open to get the battery.

[–] daed@lemmy.world 17 points 10 months ago (2 children)

I was just thinking about this the other day. Any ideas for projects to use them with?

[–] redcalcium@lemmy.institute 16 points 10 months ago (1 children)

Turn them into a power bank, among other things.

[–] Corkyskog@sh.itjust.works 4 points 10 months ago* (last edited 10 months ago) (1 children)

futuristic caltrops

I am dying... 🤣

Also they all have to be 0.1 v from each other otherwise the "whole thing goes south" sounds scary and is now kind of making me rethink my plan of putting up collection boxes outside of high schools and building a battery for my house out of them.

[–] redcalcium@lemmy.institute 6 points 10 months ago* (last edited 10 months ago) (1 children)

Once it's balanced and wired it's impossible to be imbalanced again though. The risk is only during initial assembly and you accidentally includes an empty cells among fully charged cells.

building a battery for my house

Uh yeah that's totally different league than building a power bank though.

[–] adrian783@lemmy.world 4 points 10 months ago

this is only true if they're 1s. but all bets are off if you have cell groups. God forbid you use them to make anything remotely useful like an ebike battery or home power storage.

[–] adrian783@lemmy.world 1 points 10 months ago

... home made ecig?

[–] Usernameblankface@lemmy.world 12 points 10 months ago

I guess that's the silver lining, free batteries for anyone willing to deal with a dirty object.

They're also a prime starting supply for lithium battery recycling plants so they can get things figured out before they have to deal with car packs at volume.

[–] sibannac@sh.itjust.works 3 points 10 months ago (1 children)

I have a small collection from friends that use the disposables. What do you use them for? I had the idea to make keychain flash lights or a battery conversion of some kind.

[–] kent_eh@lemmy.ca 1 points 10 months ago

At the moment I have several strings of LED Christmas lights on various houseplants that are powered by salvaged batteries.

Also a dollar store magnetic "spotlight" that I modified and have mounted to the chest freezer in the basement so I can see what's in there.

[–] ScaredDuck@sopuli.xyz 2 points 10 months ago

For anyone wanting to learn more there's a bigclive video covering the extraction process.

[–] RagingRobot@lemmy.world 2 points 10 months ago

You can also use them as mini fog machines if you hook up a small pump. I build dioramas and have been experimenting with them.