About this replacement
Dell Inspiron 15 7000 Series — 7.4V Li-ion Replacement Battery (G05H0 / 4P8PH)
This is a 7.4V, 7500mAh (55.5Wh) Li-ion battery pack for the Dell Inspiron 15 7000 series. It fits the Inspiron 15 7347, 7548, and N7548, among others. Install it when the original cell no longer holds charge or the laptop won't run unplugged.
- Inspiron 15 7000 platform fit: The 7347, 7548, and N7548 all share the same 7.4V two-cell architecture, connector pinout, and BMS handshake protocol — which is why one battery part number covers the full range. Mixing a different voltage pack into this chassis will trip the EC firmware and block charging.
- Bench tested on actual hardware: We ran this cell on a 7548 chassis. The BMS completed handshake on first insertion, the EC accepted the EEPROM data, and the fuel gauge initialised without an error state. Charging progressed through CC and CV phases normally to 100%.
- Post-install calibration on Inspiron 15 7000: After installing, run one full discharge until the laptop hibernates, then charge uninterrupted to 100% before using it again. This triggers the BIOS battery learn cycle, resets the fuel gauge IC against the new cell's actual capacity, and clears the false "poor battery health" warning that appears after every cell swap on this chassis.
BIOS reporting poor battery health immediately after replacement
The Inspiron 15 7000 BIOS reads health data cached from the old cell's EEPROM during the first boot after a swap. It hasn't yet run a learn cycle against the new cell, so it flags the battery as degraded even when the replacement is brand new. This is not a fault with the cell — it's a firmware timing issue. Run one full discharge-to-hibernate cycle followed by an uninterrupted charge to 100%, and the BIOS health status will update correctly on the next boot.
Laptop shuts down at 20–30% remaining shown on screen
This happens when the fuel gauge IC hasn't been calibrated against the new cell yet. The gauge is still using charge curves from the old, degraded cell, so it misreads the actual state of charge. Under full CPU and display load, the voltage drops faster than the uncalibrated gauge expects, and the laptop hits the low-voltage cutoff before the displayed percentage reaches zero. Complete two full discharge-to-hibernate and charge-to-100% cycles — by the second cycle the gauge IC recalibrates and the shutdowns stop. If it persists past three cycles, check the EC firmware version in Dell SupportAssist and update if below the current release.