HP ProBook 11 G1 Replacement Battery DB06XL 11.1V 2600mAh

HP ProBook 11 G1 / G2 / EE Series — 11.1V Li-ion Replacement Battery (DB06XL)

This is an 11.1V Li-ion battery rated at 2600mAh (28.86Wh), built to replace the original DB06XL cell in the HP ProBook 11 G1, G2, and EE series notebooks. It fits the three-cell bay in these compact education-focused laptops and connects via the OEM-matched multi-pin connector. Confirmed compatible part numbers include DB03, HSTNN-LB6Q, HSTNN-W04C, and 797430-001.

• ProBook 11 G1, G2, and EE platform fit: HP standardised the DB06XL cell across the G1, G2, and EE variants because all three share the same 11.1V rail, identical bay dimensions, and the same BMS handshake protocol over the SMBus interface. One cell covers the full family.
• Bench tested on actual hardware: We ran this cell through charge and discharge cycles on a ProBook 11 G1 unit. The BMS handshake completed without error flags, charge acceptance was normal to 100%, and no thermal cutoff events were recorded under sustained CPU load with backlight at maximum brightness.
• BIOS learn cycle after installation: After fitting this cell, run the laptop down to hibernate-cutoff under real load — video playback or screen brightness at full works — then charge uninterrupted to 100%. This forces the BIOS battery learn cycle to reset against the new cell and clears the false "poor health" or "replace battery" warning that commonly appears after every cell swap on ProBook 11 units.

BIOS reporting poor battery health immediately after installing a new cell

The ProBook 11 BIOS reads health status from EEPROM data stored on the battery's fuel gauge IC. When a new cell arrives, that EEPROM holds factory default values — not a learned charge curve matched to your unit. The BIOS compares those defaults against expected capacity and flags a mismatch as poor health. Running one full discharge to hibernate-cutoff followed by an uninterrupted charge to 100% rewrites the learned data and resolves the warning. After two or three cycles, the reported health figure in HP Support Assistant will stabilise at an accurate level.

Laptop shutting down at 20–30% charge shown on screen

This is a voltage cliff problem, not a fuel gauge error. As the cell discharges toward the lower end of its range, voltage drops faster under simultaneous CPU, display, and storage load than the fuel gauge IC predicted during its last calibration cycle. The BIOS sees voltage fall below the safe cutoff threshold and initiates an immediate shutdown before the percentage indicator reaches zero. Run the full discharge-to-hibernate cycle described in the care bullet above, charge back to 100% without interruption, and repeat twice. The fuel gauge IC recalibrates its voltage-to-percentage curve against the new cell and the early shutdowns stop.