About this replacement
Dell Latitude 15 5501 / Precision 3541 — 11.4V Li-ion Replacement Battery (1FXDH)
This is an 11.4V, 8400mAh (95.76Wh) lithium-ion replacement battery for the Dell Latitude 15 5501, Latitude 15 5511, Precision 3541, and Precision 3551. It uses OEM part numbers 1FXDH, 0D191G, and 1WJT0. Fit this battery when the original no longer holds a charge or the system reports a degraded cell.
- Latitude 5501 / 5511 and Precision 3541 / 3551 compatibility: These four models share the same 11.4V three-cell architecture, the same physical connector pinout, and the same BMS communication protocol. That shared platform is why one SKU covers all four devices without modification.
- Bench tested on actual hardware: We ran this cell on a Latitude 5501 chassis and confirmed the BMS handshake completed on first boot. The system recognised the battery, reported capacity correctly in BIOS, and the charge controller accepted a full charge cycle without fault codes.
- BIOS learn cycle after installation: After fitting this battery, run the laptop down to hibernate cutoff on battery power alone, then charge it uninterrupted to 100%. This resets the BIOS battery learn cycle and clears the inaccurate health warning that appears in Dell Power Manager after every cell swap.
Laptop shutting down at 20–30% remaining after a battery swap
The fuel gauge IC in the Dell Latitude builds a discharge model based on historical cell data stored in EEPROM. When a new cell goes in, that model is stale and does not match the actual voltage curve of the replacement chemistry. Under full CPU and display load, voltage drops faster than the old model predicts, and the system interprets it as a sudden cliff — triggering an emergency shutdown. Running two full discharge-to-hibernate cycles recalibrates the fuel gauge IC against the new cell and eliminates the premature cutoff.
Dell Power Manager shows wrong Wh rating after replacement
The Wh figure displayed in Dell Power Manager is read from the EEPROM embedded in the battery pack, not calculated live from the cell. Replacement cells sometimes carry EEPROM values from a reference cell that differs slightly in rated Wh from the actual installed chemistry — causing the system to display a number that does not match the 95.76Wh spec on the label. This is an EEPROM data mismatch, not a fault with the battery. Capacity and charge behaviour are unaffected; the displayed Wh value will re-align after the BIOS completes one full learn cycle.