[shrek]

I've bought a lot of third party batteries for ThinkPads specifically that have been pure garbage. The new OEM batteries, even for 10+ year old machines are expensive, ranging from $50 to $150. I've thought about trying to replace the cells myself. I don't really have much to lose with batteries that are already dead. 

Some interesting info:

https://forum.thinkpads.com/viewtopic.php?t=121516
https://hackaday.com/2011/08/01/who-knew...ump-start/

Has anyone here ever done this?