Thinkpad Battery Power Bank

Turns batteries for Thinkpads into USB power banks

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A copy of the "Smart Battery, Smarter Power Pack" project. I had originally planned to modify his project to accept Lenovo batteries instead of the Dell batteries used in his project. This effort was hampered by the inability to find Lenovo laptop battery connectors. I found them.

This project is a very slight reengineering of #Smart Battery, Smarter Power Pack. Changes include form factor and battery connector

  • Obtaining Unobtanium

    Benchoff02/06/2016 at 19:10 0 comments

    Clockwise from top, we have the battery connector for the six-cell X250 battery, the "TE Connectivity 2mm pitch Battery Plug assy. 7Pos. H=4.0" connector that fits perfectly in the battery, and the newest Lenovo charger port. These are the parts necessary to build a Thinkpad battery power bank.

    Quick overview of what this thing does: it's a small board that clips (or velcros - haven't decided yet) onto a battery, and provides a charging port through the usual Lenovo charger. 2 USB charging ports are also provided, allowing any phone or device to fast charge from the Lenovo battery.

    There are exactly two functions to this device:

    • Recharges thinkpad batteries with the usual Lenovo charger
    • Turns thinkpad batteries into a USB power bank

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eddierocky wrote 07/24/2019 at 19:39 point

I am trying to revived some brand new Lenovo x220 batteries that had been instorage for over 5 years. Currently, the laptop does not register the battery because they have 0 volts. I wanted to figure out a way to use the arduino to monitor and resuscitate the battery by bring up the voltage up to around 10V. (battery rated at 11.1V Currently have the pinout info but not sure what to do with it. Hopefully could pick up some pointer here.

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Vadim Zaliva wrote 09/29/2016 at 23:24 point

I had the exact same idea! I carry spare laptop battery AND USB power bank. Wouldn't it be great to combine those! I am eagerly monitoring your progress and hope you will make it possible to use ThinkPad battery as USB power brick.

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