Note: Some 9-pin revisions swap Pin 6 and 7 functions. Always verify continuity between negative pins and the cell negative terminal to identify ground.
: Standard 6-cell versions typically offer ~4000 mAh to 5200 mAh. Hp Mu06 Notebook Battery Pinout Configuration
– The serial data line used to report charge level, temperature, and cycle count. Note: Some 9-pin revisions swap Pin 6 and 7 functions
Pins 4 and 5 (SCL/SDA) are critical for the laptop to recognize the battery. If these lines are broken or the Battery Management System (BMS) has locked the data, the laptop may report "Battery Not Detected" or refuse to charge the unit. When repurposing this battery for external use, you usually only need Pins 1/2 (Positive) and Pin 7 (Negative/Negative) to draw power. However, some BMS boards require a "wake-up" signal on the data lines to output voltage. – The serial data line used to report
. Used to monitor the battery's internal temperature during charging. Pin 6: System Present / Control
Using a multimeter (set to DC Volts, 20V range), measure between: