Jump starting a recelled IBM Thinkpad T40 battery

http://www.jaforeck.com/t40recelling/

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.

Category:

Science & Technology

Tags:

• ibm
• thinkpad
• t40
• replaced
• cells
• dead
• computer
• laptop
• repair
• fix

[pramuk9998]

I have lenovo g-450 i also re-celled the battery and i have the same problem no output from the battery connected you here short circuited the +ve point to some point on pc board in my ckt what is the point where i have to short

[hugatry]

@pramuk9998 Yeah, I quickly shorted the positive side of the cell pack and the positive pin of the connector. Unfortunately I don't know which pin is positive in g450's battery's connector.

[mitulabattyi]

Hi!

Is the fan parallel connected to the resistor?

[hugatry]

@mitulabattyi Yes. I connected the fan to be able to see when there is voltage in the connector. Resistor is for testing if the battery can handle 1A load.

[sqhschief]

@rolandhensle24 No.

[rolandhensle24]

This video went viral on Paris

[therealjammit]

Instead of a jumper, you might want to try jump starting it from the outside of the battery with a current limited 12V power supply. Pretty much any 12Vdc power supply with a 100 ohm resistor in series should be enough.

[rcChopperDave]

Thank you for posting this!

I have a dead thinkpad battery that I will try to revive following your technique.

It is kind of a good thing that you didn't keep the battery looking like new when you opened it. The damaged case will be a reminder that the battery is modified and should be handled with extra caution.