Anyone know anything about these strange little fellas?

[Irstoopid]

Really new to this love of battery thing but came across these in a run down old tool box and was intrigued. No probs if its a bother. Cheers anyhoo

 

[nz_lifer]

Looks like an old laptop battery pack with prismatic cells.
At a guess an expanded battery for an IBM Thinkpad looking at connector.

 

[floydR]

Panasonic , sanyo, samsung maybe other made small prismatic cells like that. the ones I have are around 1900mAh to 2000mAh cells. There have been a few threads about using them in powerwalls.

Red, rectangular, tic-tac box like cells from slim Dell laptop batteries

Hi folks, any chance you could help me id those funky cells? I searched and searched but can't seem to find anythng online which would look remotely similar. They are roughly 50x35x10mm and what's weird about them is that unlike 18650s, it's the positive terminal that's connected to the body of...

secondlifestorage.com

later floyd

 

[kc8adu]

i stuff them in 3aaa side by side items along with a tp4056 board.