| Measurement Points | Expected Voltage (Standalone) | Expected Voltage (In Laptop, AC Present) | |----------------------|-------------------------------|-------------------------------------------| | Pin 6 to Pin 1 | 0V (FETs open) or 10.8–12.6V (rare if not locked) | 11–13V (charging) / 9–12V (discharging) | | Pin 3 (SMBC) to GND | 0V (no pull-up) | 3.3V | | Pin 4 (SMBD) to GND | 0V | 3.3V fluctuating (data activity) | | Pin 5 (TH) to GND | 10 kΩ to 100 kΩ (resistance) | 0.5V–2.5V (depending on temperature) |
10.8V or 11.1V (depending on cell configuration) Capacity: Typically 47Wh to 55Wh for 6-cell versions Hp Mu06 Notebook Battery Pinout Configuration
For specific part number variants, you can check for setup guides on the HP Support site . | Measurement Points | Expected Voltage (Standalone) |
Often uses the BQ20ZXX family (e.g., BQ20Z40), which utilizes the SMBus protocol for impedance tracking and state-of-charge calculation. Critical Maintenance Tips Calibration:
Some third-party replacement batteries may have slightly different internal wiring for the "System Present" pin, which can prevent charging if the laptop doesn't recognize the "low" signal on Pin 6. Calibration: