About this replacement
Dell Alienware 17 R2 — 14.8V Li-ion Replacement Battery (6JHDV)
This is a 14.8V, 6200mAh (91.76Wh) Li-ion battery for the Dell Alienware 17 R2 gaming laptop. It fits multiple Alienware 17 R2 variants including ANW17-2136SLV, AW17R3-7092SLV, and AW17R3-8342SLV. OEM part numbers 6JHDV, 5046J, 05046J, and 6JHCY all cross-reference to this cell.
- Alienware 17 R2 platform fit: These models share the same 14.8V four-cell configuration, connector pinout, and BMS handshake protocol. The battery management system on this platform validates cell chemistry and voltage signature at boot — this replacement passes that check without triggering a hardware fault flag.
- Bench tested on actual hardware: We cycled this battery under a sustained CPU plus discrete GPU load profile matching a typical Alienware 17 R2 session. The BMS held voltage above the 12.5V cutoff floor throughout, and charge termination triggered correctly at 16.8V with no overcharge event.
- Post-installation calibration cycle: After fitting this cell, run the laptop down to hibernate cutoff without interruption, then charge uninterrupted to 100%. This resets the BIOS battery learn cycle and clears the inaccurate health warning that appears after every cell swap on this platform.
BIOS reporting battery health as poor after replacement
The Alienware BIOS reads health data from EEPROM stored on the battery's BMS board. When a new cell is installed, that EEPROM data does not match the laptop's learned discharge profile from the previous battery. The BIOS interprets this mismatch as degraded health rather than a new cell. Running one full discharge-to-hibernate followed by an uninterrupted charge to 100% forces the BIOS to rewrite its learn cycle data against the new cell and clear the warning.
Laptop shuts down at 20–30% charge shown on new battery
This happens when the fuel gauge IC has not yet calibrated against the new cell's actual discharge curve. The reported percentage drifts ahead of the real voltage, so the cell hits its low-voltage cutoff — typically around 12.8V under full CPU and GPU draw — while the OS still shows charge remaining. It is not a faulty battery. Complete two to three full discharge and charge cycles without interrupting either phase, and the fuel gauge IC will recalibrate its estimation model to match this cell's actual capacity curve.