Laptop Battery Rebuild

I have a few laptops that need new batteries. The fact that OEM is expensive and most of the time you cannot find any good after market I would like to rebuild them. I would also like to rebuild them because battery technology is better now and I think I can get better batteries.

Jump Starting Dead Batteries

One of the problems that I have read about is if the battery side of the battery circuit loses power then the circuit blocks/locks. Recommendations so far seem to be:

Jump start the circuit with voltage<ref>http://hackaday.com/2011/08/01/who-knew-thinkpad-batteries-require-a-jump-start/</ref> Independently charge the battery side<ref>http://hackaday.com/2011/08/01/who-knew-thinkpad-batteries-require-a-jump-start/</ref>

I have also read somewhere that you can never get the circuit to start again so during the repair process keep it powered.

It has been called a control circuit,

Recalibration

• To correctly build a battery pack, you'd have to clear the EEPROM through the SMBUS interface using a software.<ref>http://forum.notebookreview.com/threads/diy-laptop-battery-rebuild.213793/</ref>

Rebuilding Tips

• http://www.linuxjournal.com/content/rebuilding-laptop-battery
• http://www.engadget.com/2005/06/28/how-to-rebuild-your-laptop-battery/
• http://www.buchmann.ca/article21-page1.asp
• http://www.summet.com/blog/2007/02/17/laptop-battery-refill/ (BMS System)
• http://www.notebookreview.com/news/diy-laptop-battery-rebuild/