About this replacement
Dell Latitude 5501 / 5401 / 5410 Series — 15.2V Li-ion Replacement Battery (3HWPP)
This is a 15.2V Li-ion replacement battery rated at 4150mAh (63.08Wh) for the Dell Latitude 5501, 5401, and 5410 series notebooks. It replaces OEM part numbers 3HWPP, 3PCVM, and YPVX3. Install it when the original cell has degraded and the laptop no longer holds a charge away from the wall.
- Latitude 5401 / 5501 / 5410 platform fit: These three models share the same 15.2V four-cell battery bay, connector pinout, and BMS handshake protocol. One replacement SKU covers the full platform — no adapter or wiring change needed.
- Bench tested on actual hardware: We ran this cell through charge-discharge cycles on a Latitude 5501 unit. The BMS negotiated correctly with the EC firmware, charge termination triggered at the expected voltage ceiling, and the fuel gauge reported capacity without error flags after the second cycle.
- Post-install calibration on Dell Latitude units: After fitting this battery, run one full discharge down to hibernate-cutoff, then charge uninterrupted to 100%. This resets the BIOS battery learn cycle and clears the inaccurate health warning that appears after swapping cells.
BIOS reporting poor battery health immediately after fitting a new cell
Dell's embedded controller reads health data stored in the battery's EEPROM and compares it against accumulated charge cycle history from the previous cell. A new cell carries fresh EEPROM data that the EC has never seen before, so it flags the state-of-health as unknown or degraded. This is a firmware artefact, not a cell fault. Run one full discharge-to-hibernate followed by an uninterrupted charge to 100% and the EC recalibrates. After two full cycles, the health status in Dell Power Manager should update to normal.
Laptop shuts down at 20–30% charge shown on the gauge
This happens when the fuel gauge IC has not yet mapped the new cell's actual voltage curve. The gauge loses track of true state-of-charge at low capacity, and when the cell voltage drops under full CPU and display load, the system shuts off before the displayed percentage reaches zero. The fix is calibration — discharge fully to hibernate-cutoff with the display at full brightness and an active workload, then charge straight to 100% without interruption. After two calibration cycles the gauge anchors to the new cell and the premature shutdowns stop.