DK04XL HP Elite C1030 Replacement Battery 7.7V 6150mAh

HP Elite Dragonfly C1030 — 7.7V Li-Polymer Replacement Battery (DK04XL)

This is a 7.7V, 6150mAh (47.36Wh) lithium-polymer replacement battery for the HP Elite Dragonfly C1030 convertible notebook. It also fits the Elite C1030 Chromebook, Elite C1030 Chromebook Enterprise, and Chromebook X360 13c. OEM cross-references include DK04XL, DK04050XL, HSTNN-DB9W, and L93531-2C1.

• C1030 platform compatibility: All four models share the same battery bay geometry, connector pinout, and 7.7V power rail. The BMS handshake protocol is identical across the Chromebook and Windows variants, so one cell covers the full C1030 generation without modification.
• Bench tested on actual hardware: We cycled this cell through charge and discharge on the C1030 platform and confirmed the BMS communicated correctly with the EC. Charge acceptance reached rated capacity without thermal events or cell dropout under sustained CPU and display load.
• Post-install calibration on the C1030: After fitting, run one full discharge to hibernate cutoff, then charge uninterrupted to 100% without using the machine. This forces the EC to run a battery learn cycle against the new cell and clears the inaccurate health warning that appears in HP Support Assistant after every cell swap.

Why the C1030 BIOS reports poor battery health immediately after a cell swap

The HP Embedded Controller stores charge history and wear data from the original cell in EEPROM. When a new cell goes in, the EC compares live readings against that stored profile and flags a mismatch as degraded health — even on a brand-new battery. The fix is a full calibration cycle, not a BIOS update or warranty return. Once the EC completes a learn cycle with the new cell, the health status resets to normal and HP Support Assistant stops flagging it.

C1030 shutting down at 20–30% charge shown on screen

This is a voltage cliff problem, not a capacity problem. Under full CPU boost plus the touchscreen display, the cell's voltage drops faster than the fuel gauge IC can track, and the laptop hits the low-voltage cutoff before the OS-reported percentage reaches zero. The fuel gauge IC needs two to three full calibration cycles against the new cell to map actual voltage-to-capacity curves correctly. Run the laptop on battery from 100% down to hibernate cutoff twice and the gauge will align — shutdowns at false-high percentages will stop.