About this replacement
HP Pavilion 11 X360 — 7.6V Li-ion Replacement Battery (HSTNN-LB6B)
This is a 7.6V 3800mAh (28.88Wh) Li-ion replacement battery for the HP Pavilion 11 X360 convertible laptop. It fits the 11-N000 series, TPN-C115, and 11-N022NW, among the 200+ model variants that share the PL02XL cell platform. OEM part numbers covered include HSTNN-LB6B, PL02XL, 751875-001, and TPN-C115.
- X360 11-N series platform fit: Every model in this cluster runs the same 7.6V two-cell configuration with a shared BMS handshake protocol. HP kept the connector and EEPROM communication spec consistent across the 11-N000 production run, so one cell fits all variants without modification.
- Bench tested on actual hardware: We cycled this cell through charge, load, and hibernate-cutoff on the X360 platform. The BMS negotiated correctly, charge termination triggered at full capacity, and the protection circuit held steady under combined CPU and display load without tripping.
- First-cycle conditioning on the X360: After installing, run one full discharge until the laptop hibernates on its own, then charge uninterrupted to 100%. This resets the BIOS battery learn cycle and clears the inaccurate health warning that appears after every cell swap on this platform.
BIOS reporting poor battery health after replacing the X360 cell
HP's BIOS reads health data from EEPROM stored on the original battery controller, not from live cell voltage. When a new cell goes in, the BIOS still holds the old EEPROM degradation record and flags the replacement as worn. This is not a fault with the new battery. Running one complete discharge-to-hibernate followed by a full uninterrupted charge forces the BIOS to overwrite that cached data and recalculate health against the new cell's actual capacity.
X360 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 discharge curve. The displayed percentage is based on a voltage-to-capacity map built from the old cell — the new cell hits a voltage cliff at a different point. The laptop cuts power before the gauge catches up. Two to three full discharge-and-charge cycles recalibrate the fuel gauge IC. After calibration, shutdown should occur below 5% reported charge.