I found out there was no output in my laptop's battery after replacing the cells. I had to reset laptop battery's protection circuit in order to make it work again. In many "How to recell laptop battery" tutorials, there is warning that battery might get bricked when cells are removed. I've found that in many cases this kind of jump starting process can fix that.

I've received feedback from multiple users saying this has worked for other brands too, not just IBM Thinkpads. And I've noticed the same thing. Sometimes the switch is in positive side, but sometimes it has been in negative side...

Here is a blog post I wrote for this hack, telling you why I did this and how:
[ Ссылка ]

Disclaimer: This isn't tutorial or "how-to" video. This video was made and published only to document my personal project. I take no responsibility if someone tries to replicate this.

Few additions that are needed, according to the comments/PMs:
-The resistor and fan aren't needed. They are there just to prove there is some kind of ouput.
-The internal switch can be in the negative side. In that case I would have needed to connect the jumper wire from negative side of the battery pack to the negative side (-) of the outputconnector, instead of positive sides.
-If the voltage of each cell is ~3V or more and this method doesn't work, the problem is somewhere else... Most likely in the battery's PCB.

If you liked the video, please show it and hit the Like-button!
Check out my other videos:
[ Ссылка ]
Subscribe:
[ Ссылка ]

свернуть