System76 Gazelle gaze14 Replacement Battery 14.6V 2750mAh

Systemax System76 Gazelle (gaze14) — 14.6V Li-ion Replacement Battery

This is a 14.6V Li-ion battery rated at 2750mAh (40.15Wh), built as a direct cell replacement for the System76 Gazelle gaze14 laptop. It fits the gaze14 chassis and connects to the same power rail the original cell used. Voltage and connector spec match the factory configuration.

• gaze14 platform fit: The gaze14 uses a 14.6V four-cell Li-ion configuration that the Gazelle firmware expects for BMS handshake. A mismatched voltage rail causes the system controller to flag the pack as unrecognised before POST even completes.
• Bench tested on actual hardware: We cycled this cell through charge, full-load discharge, and re-charge on a gaze14 bench unit. The BMS negotiated correctly, protection cutoff triggered at the expected low-voltage threshold, and charge termination held at 100% without overrun.
• gaze14 battery learn cycle after install: After fitting this cell, run the laptop on battery alone until it hibernates at zero, then charge uninterrupted to 100% before unplugging. This resets the BIOS battery learn cycle and clears the inaccurate health warning the firmware throws after every cell swap.

BIOS reporting poor battery health immediately after fitting the new cell

The gaze14 BIOS reads EEPROM data written by the original cell and compares it against the new pack on first boot. Because the new cell has no charge history logged, the firmware interprets the blank EEPROM as a degraded or unknown battery. This is a firmware calibration issue, not a fault with the replacement cell. Run one full discharge-to-hibernate cycle followed by an uninterrupted charge to 100% — the BIOS learn cycle rewrites the EEPROM reference and the health warning clears.

Gazelle shutting down at 20–30% charge shown on screen

This happens when the fuel gauge IC has not yet calibrated against the new cell's chemistry and voltage curve. The IC inherited reference points from the old, degraded cell and calls empty too early. Under full CPU and display load, the reported percentage and actual cell voltage diverge sharply at the knee of the discharge curve — the system hits the hardware low-voltage cutoff while the OS still shows 20–30%. Complete two or three full discharge-to-hibernate and full-recharge cycles to let the fuel gauge IC re-anchor its curve to the new cell. After calibration, shutdown should not occur above 5% reported charge.