Gregory's Servercracking open the battery. it's ultrasonically welded shut. the trick is to find a weak point and start wedging it open.
|
125 comments
@tubetime The single strip of Scotch tape in the middle is a nice touch.   @tubetime Did you have to make your own contacts of could you reuse something else? @tubetime Perhaps the Hirose DXM connector? https://www.mouser.com/new/hirose/hirose-dxm-connectors/ @maehem yeah i sorta think its a Hirose product but it's not DXM, which has only 2 rows of contacts, not 4.  @tubetime Here's the 0.8mm pitch version.  @tubetime and apparently that specific one is only found on 700 and 720 series. Probably this one is ISA only, whereas the following series have PCI and/or CardBus.  @tubetime looks like some kind of mezzanine connector last night i reverse engineered it. the design is simple so it wasn't too hard. the files are here: https://github.com/schlae/Thinkpad700CPower it also explains the mystery "INPUT SIGNAL" pin on the old 4-pin IBM Thinkpad power connector. this pin simply increases the output current limit when it is pulled low by the laptop. it's because the power brick is also the battery charger, and when the laptop is turned on, you have to increase the current to compensate. @tubetime Please don't step on those! Lego is bad enough already @tubetime Haha, that was actually my first thought when you started this thread. "Those are just dressed up card-edge connectors." Nice job.   @tubetime You're taking good care of the capacitors they're growing in size! 😆 @tubetime Now that would be a truly useful AI - upload a picture of a connector (perhaps with a ruler for scale), and it tells you what the connector is and where to get it. Yours was a tough one, but its hard even for more common connectors. Next time I go to Anchor I’m going to take some stuff with me to see if I can find matching connectors. |
then you just work your way around the seam, cracking it apart.