HP Chromebook 11 G5 EE Compatible Battery 11.1V AS03XL

HP Chromebook 11 G5 EE — 11.1V Li-Polymer Replacement Battery (AS03XL)

This 11.1V, 3500mAh (38.85Wh) Li-Polymer battery replaces the AS03XL cell in the HP Chromebook 11 G5 EE and compatible EE-series variants including Y4P07AV. It fits the slim 5.87mm battery bay without modification and connects via the original locking harness. Cross-reference OEM part numbers AS03XL, HSTNN-DB7Z, 918669-855, or 918340-171 before ordering.

• G5 EE platform fit: The G5 EE uses a shared voltage rail and BMS handshake across Y4P07AV, Y4P07AV_MB, and 1BS76UT variants. All pull the same 11.1V pack with an identical connector pinout, so one cell covers the full sub-family without adapter wiring.
• Bench tested on actual hardware: We cycled this cell on a G5 EE unit and confirmed the BMS accepted the pack, exited protection mode, and handed charge control to the firmware without a fault flag. Charge current ramped normally through CC and CV stages.
• Post-install calibration on ChromeOS: After fitting, let the Chromebook discharge fully until it hibernates — do not interrupt. Then charge uninterrupted to 100%. This forces the fuel gauge IC to re-learn the new cell's actual capacity curve and clears the false "battery health poor" flag that appears in ChromeOS diagnostics after every cell swap.

ChromeOS diagnostics showing battery health as poor after replacement

The G5 EE stores battery EEPROM data — cycle count, rated Wh, health percentage — tied to the original cell. When a new pack is fitted, the EC firmware compares the new cell's reported data against the stored baseline and flags a mismatch as degraded health. This is a firmware state issue, not a fault with the replacement cell. One full discharge-to-hibernate followed by an uninterrupted charge to 100% resets the learn cycle. After two to three full cycles the health reading in ChromeOS diagnostics stabilises to reflect the actual new cell.

Chromebook 11 G5 EE shutting down at 20–30% charge shown

This symptom points to a voltage cliff — the cell's terminal voltage drops sharply under combined CPU and display load before the state-of-charge gauge reaches zero. It is common when the fuel gauge IC has not yet calibrated against the new cell's discharge curve. The EC triggers a shutdown when cell voltage falls below approximately 10.8V under load, even if the displayed percentage is still 20–25%. Run two full discharge-to-hibernate cycles charged back to 100% each time and the gauge will track the actual voltage curve accurately from cycle three onward.