Hp Mu06 Notebook Battery Pinout Configuration
The HP MU06 pinout follows the industry standard for smart lithium batteries (SMBus + NTC + redundant power). It is not a simple + / - battery – attempting to use it without SMBus communication will either fail or trigger protection locks.
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Clear once documented, but confusing due to multiple GND pins and undocumented ID resistor variations across HP models.
Would you like a schematic diagram or instructions on how to read the SMBus data from this battery using an Arduino?
HP MU06 notebook battery generally utilizes a 9-pin blade-style connector
integrated into its plastic housing. While HP does not officially publish pinout diagrams for consumer repairs, technical analysis of MU06-compatible batteries identifies the following configuration: Store Shoppe Pinout Configuration Table Typically, the pins are numbered from left to right
when looking at the battery with the connector facing you and the label side up. Description Ground (GND)
The leftmost two pins are connected to the negative terminal of the battery pack. SMBus Clock (SCL)
Used for I2C/SMBus communication between the battery's BMS and the motherboard. SMBus Data (SDA)
Carries digital data (charge level, cycle count, temperature) to the laptop. System Present / Temp Hp Mu06 Notebook Battery Pinout Configuration
Often serves as a temperature sensor (Thermistor) or a "System Present" pin that must be grounded to enable output. Reserved/ID
These pins are often unused or provide specific battery identification signals. Battery Positive (V+)
The rightmost two pins provide the main voltage output (typically 10.8V or 11.1V). Technical Identification Tips Visual Indicators : Check the battery casing for molded "+" and "-" signs
. Ground is usually the set of pins nearest the "-" sign, while V+ is near the "+". Safety Features : The MU06 utilizes an SMBus protocol
for communication. If the clock (SCL) or data (SDA) pins are not communicating properly, the laptop may fail to detect or charge the battery even if physical contact is made. Activation
: Some HP batteries require the "System Present" pin (often Pin 5) to be pulled to Ground (GND) before the internal protection circuit (MOSFETs) will allow power to flow to the main positive terminals. MU06 Battery Specifications : Lithium-Ion (Li-ion).
: Standard packs are 10.8V or 11.1V (depending on cell configuration).
: Standard 6-cell versions typically offer ~4000 mAh to 5200 mAh. The HP MU06 pinout follows the industry standard
For official troubleshooting or to check your specific model's health, you can use the HP PC Hardware Diagnostics are compatible with this MU06 battery?
Go to product viewer dialog for this item. is a standard 6-cell lithium-ion battery used in numerous Pavilion and Compaq series laptops. While pinout documentation is not officially published by HP, technical analysis of the battery's 9-pin connector reveals a configuration based on the SMBus (System Management Bus) protocol. MU06 Connector Pinout (9-Pin Layout)
The pins are typically numbered from left to right when looking at the battery connector with the label facing up. Pin Number Description 1 & 2 GND (Negative) Common ground for power and communication. 3 Clock (C) SMBus Clock line for communication with the laptop BIOS/OS. 4 Data (D)
SMBus Data line for battery telemetry (charge %, cycles, etc.). 5 Thermistor (T) Temperature sensing (NTC) to prevent overheating. 6 & 7 System Present
Sometimes used as a "detect" pin; often must be pulled to GND for the battery to output power. 8 & 9 V+ (Positive) Main power output (typically 10.8V or 11.1V). Guide to Identifying Pinout Manually
If you are working with a third-party variant or need to verify your specific unit, follow these steps:
Locate Ground and Power: Use a multimeter to find the pins with the largest blades. These are almost always at the extreme ends of the connector. On the MU06, the leftmost two pins (1, 2) are typically Ground, and the rightmost two (8, 9) are Positive.
Test Communication Lines: The communication pins (Clock and Data) are usually found on pins 3 and 4. These pins often have ESD protection diodes. You can identify them by measuring resistance to Ground; you should see a similar value (around 600–800mV in diode mode) on both. Would you like a schematic diagram or instructions
Check for "System Present": If the battery shows 0V at the main terminals despite being charged, Pin 6 or 7 may need to be bridged to Ground (Pin 1/2) to "wake up" the battery's internal BMS.
Confirm Orientation: Look for the small plastic notches on the connector. On some HP models, Pin #1 is indicated on the motherboard next to the socket. Key Technical Specs Voltage: 10.8V or 11.1V (compatible). Capacity: Typically 47Wh to 52Wh (4400mAh – 5200mAh)
Controller Chip: Commonly uses the Texas Instruments BQ20Z45 or Go to product viewer dialog for this item. SMBus fuel gauge.
For more specific troubleshooting or help with a "battery not detected" error, refer to the HP Support Community or technical teardowns at Kuzyatech.
Are you trying to rebuild the battery pack or troubleshoot a "plugged in, not charging" error? Testing laptop battery: pinout, SMBus, charge capacity
Let’s examine what each pin does inside the HP MU06 battery system.
Note: some MU06 variants use 6 contacts, others 7; contact order and presence of dedicated temperature or sense pins varies by model and laptop family. The common essentials are VBAT+, GND, and SMBus SDA/SCL. The pack’s controller sits between the cells and VBAT output and can open MOSFETs to disconnect the pack.
Before diving into the pinout, let’s establish the technical specifications of the MU06 battery: