this post was submitted on 01 May 2025
81 points (100.0% liked)

What is this thing?

6665 readers
107 users here now

Let us help you identify that mysterious object you’ve found.

Currently in CHALLENGE mode: If you've got something obscure knocking about, post a picture, and let's see how we do. Please prefix such posts with "CHALLENGE:" so we know we've got a fighting chance.

founded 2 years ago
MODERATORS
 

Thought it might be a battery pack at first so I wasn’t going to touch it but it appears to be plastic.

Possibly broken at the top? Unsure.

top 17 comments
sorted by: hot top controversial new old
[–] ChaoticNeutralCzech@feddit.org 65 points 1 month ago* (last edited 1 month ago) (2 children)

Looks like a PJ996 lantern battery whose top cover broke off. It's probably carbon-zinc, in which case you can recover a decently big graphite rod from each cell.

[–] peto@lemm.ee 16 points 1 month ago (2 children)

I'd warn against opening the cells if you don't know how old it is. Modern ones are safe, older ones might contain heavy metals.

[–] Tar_alcaran@sh.itjust.works 19 points 1 month ago* (last edited 1 month ago) (2 children)

I think these have basically always been carbon-zinc, or alkaline.

Technically, zinc is a heavy metal, but basically harmless to humans unless you eat the whole thing. Alkaline batteries contain managous oxide, which is a heavy metal, but you'd need some serious chronic exposure to get into trouble from that.

It's still a good idea not to open random crap that washes ashore, because there are definitely FAR more dangerous things that come in small metal cylinders. Like unexploded ordnance.

[–] essell@lemmy.world 2 points 1 month ago

Technically, zinc is a heavy metal, but basically harmless to humans unless you eat the whole thing.

New Ticktok challenge! Get the word out.

managous

Manganese :)

[–] Tar_alcaran@sh.itjust.works 12 points 1 month ago* (last edited 1 month ago)

Yeah, also knows as a 4R25 6V battery, or the battery from a "24 hours lamp" (from way back when they still used lightbulbs, they last weeks now on LEDs). Those lanterns are used a lot in marine work and roadworks. Having one land in the sea is entirely common.

[–] _cryptagion@lemmy.dbzer0.com 21 points 1 month ago (2 children)

IDK, but you probably made the right choice by taking it home and bringing it inside your house. No chance it could be anything dangerous or toxic.

Ok, good. I was worried there for a second. Thanks!

[–] FelixCress@lemmy.world 1 points 3 weeks ago

Irony level "expert" 😂

[–] dumbass@leminal.space 16 points 1 month ago (1 children)
[–] lurch@sh.itjust.works 4 points 1 month ago

I hate youtube, but couldn't find another source: https://youtu.be/_rOfz_9uTDM

[–] hperrin@lemmy.ca 16 points 1 month ago

Looks like a 6V alkaline battery, without the top. Here’s someone opening one:

https://youtube.com/watch?v=zoTeMEXZfXs

[–] Treczoks@lemmy.world 15 points 1 month ago

Remains of what I know as a "camping battery". Six Volts, and loads of energy.

[–] cryptiod137@lemmy.world 11 points 1 month ago

Someone was doing their part to keep the eels going

[–] neidu3@sh.itjust.works 10 points 1 month ago (1 children)

Remains of the battery from a lantern/marking buoy. Might contain heavy elements.

These used to be single use and dropped in the ocean upon replacement. More efficient light bulbs have replaced many with solar cells and wave generators, and better environmental awareness has stopped dumping these in the sea and they're instead recycled. At least here in Norway.

[–] bizzle@lemmy.world 3 points 1 month ago

"Shit, this plastic vessel full of poison ran out... should we take it to shore and dispose of it properly?"

"Heavens no, just throw it directly in the ocean! Out of sight out of mind!"