About this replacement
Dell Inspiron 15-5558 — 14.8V Li-ion Replacement Battery (GXVJ3)
This is a 14.8V Li-ion replacement battery rated at 2600mAh (38.48Wh) for the Dell Inspiron 15-5558 and related Inspiron 3000 and 5000 series notebooks. It replaces OEM part numbers GXVJ3, HD4J0, K185W, M5Y1K, WKRJ2, and several others across a wide range of Inspiron models. It restores portable operation when the original cell has degraded or failed entirely.
- Inspiron 3000 and 5000 series compatibility: These models share the same 14.8V four-cell architecture, connector pinout, and BMS handshake protocol. Swapping across Inspiron 3451, 3458, 3551, and 5558 variants works because the EEPROM data and charge termination logic are consistent across the platform.
- Bench tested on actual hardware: We ran this cell through charge, discharge, and BMS communication checks on an Inspiron 5558. The BMS recognised the cell immediately, charge termination triggered correctly at capacity, and no fault flags appeared in the battery status register.
- Post-install recalibration on Dell notebooks: 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 commonly appears after a cell swap on Dell Inspiron hardware.
BIOS reporting battery health as poor immediately after replacement
Dell's BIOS reads health data from the battery's EEPROM, which stores charge cycle history from the previous cell. When a new cell arrives with a fresh EEPROM or mismatched cycle data, the BIOS flags it as degraded before any real charge history exists. This is a firmware interpretation issue, not a cell fault. Running the battery learn cycle — one full discharge to hibernate, then a full uninterrupted charge — writes fresh data to the EEPROM and corrects the health reading. After one or two complete cycles, the BIOS should report health in the normal range.
Laptop shuts down at 20–30% charge shown on the gauge
This happens when the fuel gauge IC hasn't calibrated against the new cell's actual discharge curve. The IC was tuned to the old cell's voltage profile, so it misreads remaining capacity and triggers shutdown early when voltage drops faster than expected under full CPU and display load. It is not a fault with the replacement cell. Run two complete discharge-to-hibernate and full-recharge cycles — by the second cycle the fuel gauge IC recalibrates and the cutoff point aligns to actual cell voltage, which at true empty is approximately 12.0V under load.