About this replacement
HP Omen 17-W100NC — 11.55V Li-ion Replacement Battery (852801-2C1)
This 11.55V, 8200mAh (94.71Wh) Li-ion battery replaces the original pack in the HP Omen 17-W100 series gaming laptops. It fits the Omen 17-W100NC alongside over 260 compatible variants, including the W100NF, W100NG, and W100NK. OEM part numbers covered include 852801-2C1, 853294-850, 853294-855, HSTNN-DB7M, and PF06XL.
- Omen 17-W100 series compatibility: These models share the same six-cell Li-ion architecture, connector pinout, and BMS handshake protocol. The SMBus communication lines are identical across the W100 variants, so one cell fits the entire range without firmware conflicts.
- Bench tested on actual hardware: We ran this cell through full charge and discharge cycles on the Omen 17 platform. The BMS negotiated correctly with the BIOS, charge acceptance started immediately at plug-in, and the protection circuit responded to over-discharge cutoff within spec.
- Post-install calibration step: After fitting this cell, run the laptop on battery until it hibernates at low charge, then charge uninterrupted to 100%. This resets the BIOS battery learn cycle and clears the inaccurate health warning that appears after every cell swap.
BIOS reporting poor battery health immediately after fitting a new cell
The HP Omen 17 BIOS reads health data from EEPROM embedded in the battery pack. When a new cell goes in, the EEPROM carries fresh data that the BIOS has never seen, so it flags the pack as unknown or degraded. This is not a fault with the replacement cell — it is the BIOS comparing stored charge history against a blank slate. Run one full discharge-to-hibernate followed by an uninterrupted charge to 100%, and the learn cycle rewrites the health register. After two to three cycles, the BIOS health readout will stabilise.
Laptop shutting down at 20–30% charge shown on screen
This happens when the fuel gauge IC has not yet calibrated against the new cell's actual voltage curve. The IC still references the old cell's discharge profile, so it calls shutdown early — the displayed percentage does not match real cell voltage. Under combined CPU and display load, voltage drops faster than the uncalibrated gauge predicts, triggering a protective shutdown. Run two full discharge cycles — letting the laptop hibernate rather than cutting power manually — then charge to 100% each time. By the second cycle, the fuel gauge IC re-maps the curve and the shutdown-at-30% behaviour stops.