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Black rectangular laptop battery with label showing voltage and capacity

NShi

NShi W0Y6W laptop battery Dell XPS 15 L521X 11.1V 65Whr 5855mAh 6-cell

SKU CH-7H8J-CHGQY

Replacement 11.1 V 65 Whr 5855 mAh 6-cell lithium-ion battery for Dell XPS 15 L521X

  • ColorBlack
  • TypeBattery
  • CompatibilityDELL XPS 15 L521X, DELL XPS 15 (L521X)
  • Battery Type6 Cell Lithium-Ion
  • Battery Voltage11.1V
  • Battery Capacity5855mah
  • Replaces nine OEM part numbers including W0Y6W and 3NPC0
  • Fits Dell XPS 15 L521X and XPS 15 (L521X) models
  • 1V lithium-ion chemistry provides stable voltage output
  • 5855mAh capacity delivers 65Whr of usable energy
  • Tested for CE, FCC and RoHS safety compliance

Direct replacement for Dell XPS 15 L521X

This 6-cell lithium-ion battery matches the original 11.1V 65Whr specification for the Dell XPS 15 L521X. It replaces OEM part numbers including W0Y6W, 3NPC0 and 9F2JJ. The 5855mAh capacity restores factory runtime for owners of this specific model. Builders working on other Dell series or non-L521X chassis cannot use this pack.

Simple swap with built-in protection

The battery fits the existing bay without tools beyond a standard screwdriver. Integrated circuit protection guards against over-charge, over-discharge and short circuits. Low self-discharge chemistry holds charge during storage. Installers must reconnect the multi-pin connector securely; a loose seat causes the system to reject the pack or report incorrect capacity.

Steady output through a full workday

Rated at 65Whr, the pack delivers consistent voltage under sustained loads such as video playback or document editing. CE, FCC and RoHS certification confirm stable current delivery without thermal spikes. Runtime scales with screen brightness and CPU demand; heavy rendering or gaming will deplete the 5855mAh reserve faster than light office use.

Highlights

  • Replaces nine OEM part numbers including W0Y6W and 3NPC0
  • Fits Dell XPS 15 L521X and XPS 15 (L521X) models
  • 1V lithium-ion chemistry provides stable voltage output
  • 5855mAh capacity delivers 65Whr of usable energy
  • Tested for CE, FCC and RoHS safety compliance

Specifications

BrandGreenTech
ModelW0Y6W, 3NPC0, 03NPC0, CN-03NPC0, 9F233, 09F233, 9F2JJ, 09F2JJ, T1G6P
ColorBlack
TypeBattery
CompatibilityDELL XPS 15 L521X, DELL XPS 15 (L521X)
Battery Type6 Cell Lithium-Ion
Battery Voltage11.1V
Battery Capacity5855mah

Questions about this item

How can I confirm the 11.1V 5855mAh battery is working correctly after installing it in my Dell XPS 15 L521X?

The system should detect the new pack immediately, report the 65Whr design capacity in the BIOS or OS power settings, and hold charge through a full discharge cycle without unexpected shutdowns.

What comes with the GreenTech W0Y6W pack and what extra items are required for the swap?

Only the 6-cell lithium-ion battery is supplied; you must reuse the existing screws and any mounting brackets from the old unit, and no special tools beyond a standard Phillips screwdriver are needed.

Which of the listed part numbers — W0Y6W, 3NPC0, 9F2JJ or T1G6P — should I choose for my XPS 15 L521X?

All four codes refer to the same 11.1V 65Whr 6-cell specification, so any GreenTech battery carrying one of those numbers will fit and function identically in the L521X chassis.

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