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Rectangular black laptop battery pack 8.0x1.5x0.8 cm

Dr. Battery

Dr. Battery Dell XPS 14 L421X laptop battery 4662 mAh 14.8V

SKU CH-BCN2-XVXCE

Replacement lithium-polymer battery delivers 4662 mAh at 14.8 V for Dell XPS 14 L421X ultrabooks with integrated over-charge, over-discharge, overheating and short-circuit protection

  • TypeBattery
  • CompatibilityDell 421x-1046 / Dell XPS 14 (L421X) / Dell XPS 14 L421X Ult
  • Battery TypeLi-polymer
  • Battery Voltage14.8V
  • Battery Capacity4662 mAh
  • FunctionNotebook
  • 4662 mAh Li-polymer capacity powers extended work sessions
  • 8 V output matches original Dell XPS 14 L421X specifications
  • OEM-grade cells deliver stable performance across charge cycles
  • Integrated protection guards against over-charge over-discharge overheating short-circuit
  • Replaces Dell part numbers 4RXFK C1JKH FFK56 04RXFK for direct compatibility

Direct replacement for Dell XPS 14 L421X

This Dr. Battery Professional Series unit replaces the original 4RXFK, C1JKH and FFK56 packs in the Dell XPS 14 L421X Ultrabook. It uses Li-polymer cells rated at 14.8V and 4662 mAh to restore factory run-time. Integrated circuitry protects against over-charge, over-discharge, overheating and short-circuit. Buyers who need a higher-capacity pack or a different voltage should look elsewhere.

Sustained output with Li-polymer chemistry

The Li-polymer cells maintain a steady 14.8V through the discharge curve rather than sagging under load. Safety electronics monitor temperature and current continuously during long work sessions. The 4662 mAh capacity is designed to deliver consistent run-time from full charge down to the low-voltage cutoff. Systems that draw significantly more current than the original design may still trigger protection limits.

Match the 14.8V 4662 mAh specification

Confirm that the original battery shows 14.8V and 4662 mAh before ordering; a different voltage or capacity means this pack will not fit or function correctly. The part number DR-PRO-LDE321-D cross-references to Dell 421x-1046 and the L421X series only. No other Dell models are supported by this SKU.

Highlights

  • 4662 mAh Li-polymer capacity powers extended work sessions
  • 8 V output matches original Dell XPS 14 L421X specifications
  • OEM-grade cells deliver stable performance across charge cycles
  • Integrated protection guards against over-charge over-discharge overheating short-circuit
  • Replaces Dell part numbers 4RXFK C1JKH FFK56 04RXFK for direct compatibility

Specifications

BrandMicrosoft
ModelDell XPS 14 L421X Series
Part NumberDR-PRO-LDE321-D
TypeBattery
CompatibilityDell 421x-1046 / Dell XPS 14 (L421X) / Dell XPS 14 L421X Ultrabook / Dell XPS 14 LX421
Battery TypeLi-polymer
Battery Voltage14.8V
Battery Capacity4662 mAh
FunctionNotebook
Dimension8.0x1.5x0.8
Weight0.4

Questions about this item

Will the 14.8V 4662 mAh Li-polymer cell run hot during all-day use?

The battery uses OEM-grade Li-polymer cells with built-in protection against overheating, over-charge, over-discharge and short-circuit for stable temperatures.

Must I already own a Dell XPS 14 L421X with an original 04RXFK, 4RXFK, C1JKH or FFK56 battery for this replacement to fit?

Yes — this Professional Series pack is engineered to match those exact Dell part numbers and the XPS 14 L421X Ultrabook chassis.

Can I keep my existing 14.8V Dell charger when swapping to this 4662 mAh pack?

The replacement operates at the same 14.8V as the original, so your current Dell AC adapter will charge it normally.

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