Picture of a disassembled Duracell 9v battery. Below the terminal assembly is a clear plastic case where you can see six sets of stacked rectangular terminals and fillings.
this post was submitted on 03 Dec 2023
296 points (98.4% liked)
Mildly Interesting
17133 readers
1 users here now
This is for strictly mildly interesting material. If it's too interesting, it doesn't belong. If it's not interesting, it doesn't belong.
This is obviously an objective criteria, so the mods are always right. Or maybe mildly right? Ahh.. what do we know?
Just post some stuff and don't spam.
founded 1 year ago
MODERATORS
you are viewing a single comment's thread
view the rest of the comments
view the rest of the comments
Those super expensive rechargeable batteries they sell for cordless power tools have smaller cylindrical batteries inside, wired together.
The Torque Test Channel on YouTube took some apart for their insane Dewalt backpack battery modification video. It's a fun watch.
Open any lithium battery pack and you’d find those cylindrical lithium cells. Even a Tesla battery has those. Only things that need to be flat like a laptop or a phone use a pouch battery.
On older laptops they used cylindrical cells too. On mine, you can clearly nake out the shape of the housing on the removable battery.
Used to repurpose the individual cells of laptop batteries for ecig batteries. The cells were 18650s, same as most customizable ecig mods use.