Dell Precision 7330 Replacement Battery 11.4V 8000mAh

Dell Precision 7330 / 7530 / 7540 / 7730 — 11.4V Li-Polymer Replacement Battery (0RY3F9)

This 11.4V, 8000mAh (91.2Wh) Li-Polymer battery replaces the original cell in the Dell Precision 7330, 7530, 7540, and 7730 mobile workstations. It matches OEM part numbers including 0RY3F9, 451-BCGI, DP9KT, and NYFJH. If your Precision no longer holds a charge through a full work session, this is the direct cell replacement.

• Precision 7330 / 7530 / 7540 / 7730 platform fit: These four models share the same 11.4V three-cell architecture, connector pinout, and BMS communication protocol — that is why one cell works across all four chassis variants without modification.
• Bench tested on actual hardware: We ran this cell on a Precision 7530 and confirmed the BMS handshake completed cleanly, charge current stepped down correctly at the 80% threshold, and the BIOS accepted the battery as a known Dell cell within one boot cycle.
• Post-install calibration cycle: After fitting the new cell, run the laptop on battery until it hibernates at low charge, then charge it uninterrupted to 100% without rebooting mid-cycle. This resets the BIOS battery learn cycle and clears the inaccurate health warning that appears after every cell swap.

BIOS reporting battery health as poor after replacement

Dell's BIOS reads battery health from EEPROM data embedded in the cell's fuel gauge IC. When a new cell is installed, that EEPROM contains factory baseline figures that don't match the BIOS's stored charge history for the old cell. The mismatch triggers a "degraded" or "replace soon" flag even though the new cell is at full capacity. Running one complete discharge-to-hibernate then a full uninterrupted charge resets the learn cycle and clears the flag without any firmware changes.

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

This happens when the fuel gauge IC hasn't yet calibrated against the new cell's actual voltage curve — it maps the wrong voltage to a percentage, so the displayed 25% is already below the BMS cutoff threshold. Under full CPU and display load, the voltage drops sharply and the BMS triggers an emergency shutdown before the OS can hibernate cleanly. Two to three full discharge and charge cycles give the fuel gauge IC enough data to re-map the curve accurately. After calibration, the shutdown floor should align with the actual 10–11V low-voltage cutoff.