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I have some small Li-ion pouch batteries and I am having a hard time identifying the connector. To me it does not seem to be of a standard "JST" variety but I am not an expert. Has anyone seen such a connector used for a mass-produced Li-ion pouch battery?

I made some measurements with a caliper and made the figure below:

enter image description here

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  • \$\begingroup\$ I removed your disclaimer because component identification questions are accepted/on-topic. Thank you for providing dimensions, but one critical one you omitted is the center-to-center distance between the pins (pitch). \$\endgroup\$
    – JYelton
    Mar 31, 2023 at 20:55
  • \$\begingroup\$ QR code decodes to XG2521265893, same as the bottom line of text. That has not helped in finding any specifications for this battery/connector, however. \$\endgroup\$
    – JYelton
    Mar 31, 2023 at 21:00
  • \$\begingroup\$ @JYelton that's not QR code ... it is DataMatrix code \$\endgroup\$
    – jsotola
    Mar 31, 2023 at 21:50
  • \$\begingroup\$ @jsotola Ah, I didn't realize this obviously. Thanks for the heads up. \$\endgroup\$
    – JYelton
    Apr 1, 2023 at 0:20

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It looks like a Hirose DF57H-2S-1.2C. Some of the measurements are off but 2.6mm across the mating face matches. I would double check the dimensions against the drawing.

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  • \$\begingroup\$ For whatever is worth, I checked and I agree: Hirose DF 57. \$\endgroup\$ Mar 31, 2023 at 21:54

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