Durable Laptop Batteries
Jump starting a recelled IBM Thinkpad T40 battery
jaforeck.wordpress.com 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.
Video Rating: 4 / 5
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Thanks for the info! Good Job!!!?
Yeah. I’ve used this T40 as my? secondary computer, so I have used it only for ~40 hours after this video. I haven’t had any problems with this battery after recelling and “jump starting”.
Is this battery still working safely for? you?
I have to say that I’m not recommending you to do anything. Getting a new battery is the safest way to fix your problem.
I believe method mentioned in therealjammit’s comment MIGHT work. If you end up trying it, it should work with quickish tap (~1s). Keep in mind that batteries might explode or catch fire if you mess with power supplys and? batteries.
Hi there!
I have short circuited (just for a second) the positive and negative conncections and the output is 0V.
What if i wont? dissasemble the battery and i use an external suply to revive?
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.
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
No.?
So? I ponder exactly where the improper sort of? comments are.
This video went viral on Paris?
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.
Hi!
Is the fan parallel connected? to the resistor?
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.
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.