Dell Precision 7330 Replacement Battery 7.6V 7900mAh 0H6K6V

Dell Precision 7330 / 7530 / 7540 — 7.6V Li-ion Replacement Battery (0H6K6V)

This is a 7.6V 7900mAh (60.04Wh) Li-ion replacement battery for the Dell Precision 7330, 7530, and 7540 mobile workstations. It replaces OEM part numbers including 0H6K6V, 0RY3F9, 0VRX0J, 7M0T6, and GHXKY. Slot it into any of those three chassis and the system powers on normally.

• Precision 7330 / 7530 / 7540 platform fit: All three models share the same 7.6V battery bay geometry, connector pinout, and BMS communication protocol. The fuel gauge IC on each motherboard speaks the same SMBus handshake, so one cell covers the full Precision 7000 generation.
• Bench tested on actual hardware: We ran this cell through charge and discharge cycles on a Precision 7530. The BMS accepted the cell without error flags, the charge circuit ramped to full voltage normally, and no thermal events were recorded across multiple cycles.
• BIOS learn cycle after install: After fitting this battery, run the machine down to hibernate cutoff, then charge uninterrupted to 100% before using it again. This resets the BIOS battery learn cycle and clears the false "poor health" warning that appears after every cell swap on Dell Precision hardware.

BIOS reporting battery health as poor after replacement

Dell Precision BIOS reads cycle count, design capacity, and state-of-health from EEPROM data embedded in the old cell. When a new cell goes in, those values don't match the stored profile, so the system flags the battery as degraded even though the cell is fresh. This is a firmware calibration issue, not a battery fault. Running one full discharge to hibernate cutoff followed by a complete uninterrupted charge gives the BIOS enough data to rebuild its fuel gauge model. After two or three full cycles, the health warning clears and the reported capacity stabilises near the rated 60.04Wh.

Laptop shuts down at 20–30% remaining after battery swap

This happens when the fuel gauge IC is still calibrated against the old, degraded cell. The gauge thinks 20% remaining equals a safe voltage level, but with a new cell the actual terminal voltage under full CPU and display load drops sharply at that state of charge — the BMS trips the cutoff before the OS can react. The fix is a forced recalibration: discharge fully until the machine hibernates, then charge to 100% without interruption. Repeat this two more times and the gauge IC re-maps its discharge curve against the new cell's actual voltage profile, which pulls the shutdown point down to below 5%.