About this replacement
Dell G5 5590-D2785W — 11.4V Li-Polymer Replacement Battery (06YV0V)
This is an 11.4V, 7800mAh (88.92Wh) Li-Polymer battery for the Dell G5 15 5590-D2785W gaming laptop and compatible Alienware and G-series models. It replaces OEM parts 06YV0V, 0JJPFK, 1F22N, and XRGXX. If the original cell has degraded or failed, this restores portable operation without replacing the machine.
- G5 and G7 series compatibility: These Dell and Alienware gaming platforms share the same 11.4V three-cell architecture, connector pinout, and BMS handshake protocol — which is why a single part number covers the G5 5590, G7 7590, ALW15M-D1523S, and ALW15M-R2758R among others.
- Bench tested on actual hardware: We ran this cell through charge and discharge cycles on a G5 5590 chassis. The BMS negotiated charge termination correctly, the protection circuit tripped at the expected low-voltage threshold, and the BIOS accepted the cell without a firmware block.
- BIOS learn cycle after install: After fitting this battery, run the laptop down to hibernate cutoff on one continuous discharge, then charge uninterrupted to 100%. This resets the BIOS battery learn cycle and clears the inaccurate health warning that appears after every cell swap.
Why the G5 5590 shuts down at 20–30% after a battery swap
The Dell G5 5590 runs a combined CPU-plus-display load that pulls hard on the cell at mid-charge states. A new cell that hasn't been through a calibration cycle holds EEPROM data from the factory, not from actual in-system discharge curves. The fuel gauge IC maps capacity against that stale data and triggers shutdown when the cell voltage drops below the threshold it expects — not the real empty point. One full discharge-to-hibernate followed by a full charge corrects the mapping.
BIOS reporting battery health as "poor" or "unknown" immediately after install
The Dell BIOS reads health status from the battery's EEPROM register, which still reflects the old cell's wear state until a learn cycle writes new data. This is not a fault with the replacement cell — it is a data mismatch. Open Dell SupportAssist or navigate to BIOS battery diagnostics and run a full battery health reset. After one complete charge-to-discharge-to-charge cycle, the register updates and the warning clears. If it persists, confirm the cell voltage at rest reads between 11.1V and 12.6V.