HP SPECTRE X360 14 Not Detected Error

Internal Lithium-Ion Battery Assembly

The integrated Battery Management System (BMS) has likely triggered a hardware lockout due to cell imbalance or critical voltage drop. This prevents the Smart Battery Data System (SBDS) from communicating with the motherboard's EC, resulting in the 'Not Detected' error. Replacing the entire assembly restores the communication interface and power delivery.

SKU: L97357-005

Internal Battery Connector Cable

Mechanical stress from chassis flex or minor battery swelling can partially dislodge the high-density ribbon cable from the motherboard header. This disrupts the logic-level signals required for detection even if the power pins are still making marginal contact. A replacement cable ensures signal integrity for the battery's identification logic.

Motherboard (Integrated Embedded Controller)

In rare cases, the SMBus controller on the motherboard responsible for polling battery telemetry may fail due to an electrostatic discharge (ESD) event through the charging port. This represents a logic-level failure on the board that prevents detection of any battery, regardless of the battery's health.