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Dell XPS 16 9640

Dataset id: dell-xps-16-9640

RAM coverage
high confidence · 5 reports
Storage coverage
high confidence · 15 reports
Battery coverage
high confidence · 5 reports

Dell XPS 16 9640: soldered memory observed in 5 field reports, 0 memory slots; NVMe storage observed in 100% of 15 reports; battery part DELL J8FK943 reported.

RAM

Soldered memory observed in 5 field reports.

Memory slots: 0.

Memory type: LPDDR5. Observed memory speed: 6400 MT/s.

Largest observed configuration: 64 GB (1 report).

Recorded maximum configuration: not verified.

Based on 5 field reports, 100% agreement, high confidence.

Storage

NVMe storage observed in 15 field reports.

NVMe observed in 100% of 15 reports (a rounded share of reports, not an exact drive count).

Drives observed in reports: Sandisk WD PC SN810 / Black SN850 NVMe SSD (4), KIOXIA XG8 (3), Sandisk PC SN740 NVMe SSD (DRAM-less) (3).

Installed capacities observed: not verified.

Curated physical specifications: not verified.

Based on 15 field reports, high confidence.

Battery

Battery

Battery part numbers observed: DELL J8FK943 (1), DELL WPGCC41 (1), DELL WPGCC41K (1), DELL WPGCC41L (1).

Capacity observed: 98.5 Wh (3), 98.3 Wh (1), 98.1 Wh (1).

Voltage observed: 11.7 V (11700 mV).

Chemistry observed: Li-poly.

Manufacturers observed: BYD (4), SMP (1).

This slot appeared in 5 of 5 reports for this model, 100% agreement, high confidence.

Before you order, verify the replacement: match the exact part number printed on your current battery, and check voltage, connector, and dimensions before buying.

Sources

Fields recorded directly from hardware (firmware/PCIe reports) are distinguished below from curated facts hand-verified against manufacturer documentation.