How to wire an old working C21-X502 laptop battery with charge control still attached for general use.

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  • PackProbe

    Arduino code to read Smart Battery data from laptop battery packs using SMBus/I2C

    • Connect your power wires to the P+ and P- terminals (it looks like there are 3 wires for each). The yellow and white wires are for SMBus/I2C data, which you can read out with, for example, an Arduino and PackProbe.

  • InfluxDB

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