Technize

What Battery Does a Dell XPS L521X Take?

Dell XPS L521X

These are the battery part numbers observed in hardware reports for this model.

Battery

Part numbers

  • DELL W0Y6WE4F — seen in 2 reports
  • DELL 3NPC0268 — seen in 1 report
  • DELL 3NPC0358 — seen in 1 report
  • DELL 3NPC03BD — seen in 1 report
  • DELL 9F2JJ2BM — seen in 1 report
  • DELL 9F2JJ2CO — seen in 1 report
  • DELL 9F2JJ31Q — seen in 1 report
  • DELL 9F2JJ32G — seen in 1 report

Reports for this model and slot contain multiple part numbers. The reports do not establish that those parts are interchangeable.

Manufacturer
SANYO, SDI
Capacities observed
66.6 Wh, 65 Wh, 65.1 Wh
Voltage
11.10 V
Chemistry
Li-ion

Reports for this model and slot contain multiple capacities. Match the specifications on your existing battery and verify any change with the manufacturer.

Based on 10 reports.

Based on 10 independent hardware reports for the Dell XPS L521X.

Before you order, verify the replacement:
  • Match the exact part number printed on your current battery, or confirm a different number in the manufacturer’s service manual.
  • Check voltage, connector, polarity, dimensions, and mounting points against the original battery.
  • Make sure the seller names your exact laptop model or variant and offers a suitable return policy.

A part number appearing in these reports is an observation, not a guarantee that it fits every unit sold under the same model name.

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How we know

This answer is derived from 10 independent hardware reports for the Dell XPS L521X, of which 100% agree. We publish a model only when the reports agree overwhelmingly.

Check it yourself

On Windows, open a terminal and run powercfg /batteryreport, then open the generated HTML report — it names the battery’s model and part number. On Linux, run upower -i /org/freedesktop/UPower/devices/battery_BAT0. On any laptop, the surest method is the label printed on the battery itself, visible once you remove the back panel.

Battery health and replacement signs

Short runtime, unexpected shutdowns, or a large drop from design capacity can justify a closer check; a charging fault does not by itself prove the battery is worn out. See how to check battery health, judge replacement signs, or diagnose a charging problem.

Dell XPS L521X battery questions

What battery part number was reported for the Dell XPS L521X?

Hardware reports contain “DELL W0Y6WE4F”, “DELL 3NPC0268”, “DELL 3NPC0358”, “DELL 3NPC03BD”, “DELL 9F2JJ2BM”, “DELL 9F2JJ2CO”, “DELL 9F2JJ31Q”, “DELL 9F2JJ32G”. Confirm the printed identifier and physical specifications on your installed battery before ordering.

What battery capacity was observed?

The reports contain 65 Wh, 65.1 Wh, 66.6 Wh. Multiple values can reflect variants or replacements, so match your own label rather than choosing capacity alone.

Does a matching part number guarantee fit?

No. Verify the exact laptop variant, voltage, connector, dimensions, mounting points, and manufacturer or seller documentation as well.

More Dell laptops

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Battery part numbers derived from linuxhw/DMI, licensed CC-BY-4.0.