HP Chromebook 11-2101tu Replacement Battery HSTNN-PB6J 10.8V

HP Chromebook 11 G3 Series — 10.8V Li-ion Replacement Battery (HSTNN-PB6J)

This is a 10.8V 3250mAh (35.1Wh) Li-ion battery that replaces part number HSTNN-PB6J in HP Chromebook 11 models. It fits the Chromebook 11-2101tu, 11-2110nr, Chromebook 11 G3, and over 17 additional models in this lineup. When the original cell degrades and the laptop stops holding a charge, this swap restores portable operation.

• Chromebook 11 G3 platform fit: These Chromebook 11 variants share a common battery connector, voltage rail, and BMS handshake protocol. Part numbers HSTNN-PB6J, PE03, PE03XL, and 767068-005 are all cross-compatible across this group — same 10.8V architecture, same three-pin communication line to the EC controller.
• Bench tested on actual hardware: We ran this cell through charge and discharge cycles on a Chromebook 11 G3 unit. The BMS accepted the cell without fault codes, the EC controller established communication on the first boot, and the fuel gauge reported state-of-charge correctly after two calibration cycles.
• EC controller learn cycle after install: After fitting this battery, run the laptop off mains until ChromeOS triggers a low-battery shutdown, then charge uninterrupted to 100%. This resets the embedded controller's capacity register against the new cell and clears the inaccurate health warning that appears after every cell swap.

Why ChromeOS reports "Battery health: Poor" immediately after fitting a new cell

The Chromebook's embedded controller stores battery health metrics in its own EEPROM — not in the cell itself. When you remove the old battery, those stored values remain. The EC compares actual charge acceptance from the new cell against the degraded profile it has on record and flags a mismatch as poor health. Running a full discharge-to-shutdown followed by an uninterrupted charge to 100% forces the EC to rewrite its baseline figures against the new cell. After one complete learn cycle, the health status normalises.

Chromebook shutting down at 20–30% shown on the charge indicator

This happens when the fuel gauge IC has not yet calibrated its discharge curve against the new cell chemistry. The gauge is still using the old cell's voltage-to-capacity mapping, so it reads 25% while the actual cell voltage is already near the BMS low-voltage cutoff. The fix is the same learn cycle: discharge fully until ChromeOS hibernates, then charge to 100% without interruption. After two full cycles the gauge re-maps the curve and the shutdown point drops back to the correct low-battery threshold near 3.0V per cell.