About this replacement
HP ProBook 430 Series — 14.8V Li-ion Replacement Battery (707618-121)
This is a 14.8V, 2200mAh (32.56Wh) Li-ion replacement battery for the HP ProBook 430, ProBook 430 G1, and ProBook 430 G2. It fits the standard battery bay and connects via the original multi-pin connector. Cross-reference part numbers include 768549-001, H6L28AA, HSTNN-IB4L, HSTNN-W01C, and RA04.
- ProBook 430 G1 and G2 compatibility: Both generations use the same 14.8V four-cell architecture, identical bay dimensions, and the same BMS handshake protocol — so one cell works across both revisions without adapter or modification.
- Bench tested on actual hardware: We ran this cell through charge and discharge cycles on a ProBook 430 G2. The BMS communicated correctly with the EC, charge acceptance reached full capacity, and no fault codes were logged during the test sequence.
- Post-install calibration cycle: After fitting this cell, run the laptop down to hibernate-cutoff under normal use, then charge uninterrupted to 100%. This resets the BIOS battery learn cycle and clears the inaccurate health warning that appears after every cell swap.
BIOS reporting battery health as poor after fitting a new cell
The ProBook BIOS reads health data from the battery's EEPROM — not from live cell voltage. When you swap the physical cell, the EEPROM on the new pack carries default factory values that the BIOS hasn't yet learned. This mismatch triggers a "Battery Health is Poor" or "Replace Battery" warning even though the cell is new. Running one full discharge-to-hibernate followed by an uninterrupted charge to 100% gives the BIOS enough cycle data to update its health estimate correctly.
Laptop shuts down at 20–30% remaining shown on screen
This happens when the fuel gauge IC hasn't calibrated against the new cell's actual voltage curve. The gauge was mapped to the old, degraded cell and misjudges the remaining charge window. Under full CPU and display load, the real cell voltage hits cutoff while the OS still shows 20–30% remaining. Complete two full discharge-to-hibernate and charge-to-100% cycles to recalibrate the gauge — after that, the reported percentage should track actual voltage within a few percent.