About this replacement
HP Notebook X2 10-P043TU — 7.7V Li-Polymer Replacement Battery (SW02XL)
This 7.7V, 4200mAh (32.34Wh) Li-Polymer cell replaces the original SW02XL battery in the HP Pavilion x2 10 series hybrid tablet-laptop. It fits the 10-P043TU along with the 10-P000NA, 10-P000ND, 10-P000NF, and 167+ additional x2 10 variants. The connector, BMS handshake, and physical form factor match OEM spec across the full P-series lineup.
- x2 10 P-series compatibility: Every model in this lineup runs the same 7.7V two-cell Li-Polymer configuration with a shared BMS communication protocol. HP standardised the SW02XL form factor across the P-series so one cell covers the full range — the HSTNN-IB7N and HSTNN-LB7N designations refer to the same physical pack with different regional part codes.
- Bench tested on actual hardware: We cycled this cell on a 10-P series unit and confirmed the BMS completed handshake without fault codes. Charge acceptance ran clean from 0% to 100% with no mid-cycle cutoff. The EEPROM read-back matched expected Wh values after two full calibration cycles.
- Post-install calibration — x2 10 hybrid: After fitting this cell, run the tablet side down to hibernate-cutoff under normal load — screen on, a few browser tabs open. Then charge uninterrupted to 100% without disconnecting. This forces the fuel gauge IC to re-baseline against the new cell and clears the inaccurate health warning the BIOS throws after every cell swap.
BIOS reporting poor battery health immediately after swap
The HP x2 10 BIOS stores learned battery data in EEPROM tied to the original cell. When a new cell goes in, that stored data no longer matches the actual chemistry, so the BIOS flags the pack as degraded or unknown — even on a brand-new replacement. This is a firmware calibration issue, not a cell fault. Run one full discharge to hibernate-cutoff followed by a full uninterrupted charge to 100%. After two cycles, the fuel gauge IC re-learns the cell's actual capacity curve and the health warning clears.
Tablet shutting down at 20–30% charge shown on screen
This happens when the fuel gauge IC has not yet calibrated to the new cell's voltage curve. The x2 10 runs a combined CPU-plus-display load during active use that pulls enough current to expose a steep voltage cliff in an uncalibrated cell — the BMS interprets that voltage drop as empty and triggers a shutdown even though capacity remains. The fix is the same calibration cycle: discharge fully to hibernate, charge straight to 100% without interruption, and repeat once more. After two cycles, the OS reading will track actual cell state down to around 3.0V per cell before cutoff.