About this replacement
HP 240 G4 / 245 G4 / 250 G4 Series — 14.8V Li-ion Replacement Battery (807611-131)
This is a 14.8V, 2200mAh (32.56Wh) Li-ion replacement battery for the HP 240 G4, 245 G4, 246 G4, and 250 G4 notebook series. It cross-references OEM part numbers including 807611-131, 807612-131, HS03, HS04, and HSTNN-LB6U among others. It fits the same battery bay, uses the same connector, and communicates with the HP EC firmware over the SMBus line.
- 240 / 245 / 246 / 250 G4 platform fit: These four models share a common battery bay specification, SMBus pinout, and EC handshake protocol. HP used the HS03 and HS04 cell families across the entire G4 notebook line, so one cell covers the full range without modification.
- Bench tested on actual hardware: We cycled this cell on a 250 G4 chassis and confirmed the EC accepted the EEPROM data, reported state-of-charge correctly, and held the charge curve through three full discharge-to-cutoff cycles without a BMS trip.
- First-cycle calibration on the HP 240 G4: After fitting this cell, discharge the laptop fully until it hibernates, then charge uninterrupted to 100% without interruption. This resets the HP BIOS battery learn cycle and clears the inaccurate health warning that appears in HP Support Assistant after every cell swap.
BIOS reporting battery health as poor immediately after fitting a new cell
The HP BIOS reads health data from the battery EEPROM — a small memory chip on the cell that stores cycle count, rated capacity, and charge history. When a new cell arrives, that EEPROM data does not match what the BIOS logged from the old battery, so it flags a mismatch and reports poor health. This is not a fault with the replacement cell. Run one complete discharge-to-hibernate cycle followed by a full uninterrupted charge. The BIOS recalibrates its fuel gauge IC against the new cell and clears the warning on the next boot.
Laptop shuts down abruptly at 20–30% charge shown on screen
This happens when the cell voltage drops below the BMS cutoff threshold under combined CPU and display load before the OS fuel gauge reaches zero. The fuel gauge is calculated from a previous battery's discharge curve — it does not yet reflect the new cell's actual voltage-versus-capacity profile. The cell hits roughly 10.8V under load while the OS still reads 25%, and the BMS cuts power to protect the cell. Run two full calibration cycles as described above, and the fuel gauge will track the new cell's actual voltage cliff accurately.