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Rectangular black lithium-polymer battery pack measuring 8.0 by 1.5 by 0.8 centimetres

Dr. Battery

Dr. Battery 11.1V 3500mAh laptop battery for Dell XPS 14 L421X

SKU CH-J2BH-1CGVF

Li-polymer replacement battery for Dell XPS 14 L421X ultrabooks, 11.1V 3500mAh capacity with integrated over-charge, over-discharge, overheating and short-circuit protection

  • Battery typeLi-polymer
  • Battery voltage rating11.1 V
  • Battery capacity3,500 mAh
  • Main functionNotebook
  • Measurements8.0 × 1.5 × 0.8
  • Product typeBattery
  • 1 V 3500 mAh Li-polymer cell delivers extended runtime
  • OEM-grade cells provide stable performance and longer battery life
  • Built-in protection guards against over-charge, over-discharge, overheating and short-circuit
  • Compatible with Dell XPS 14 L421X Ultrabook series
  • Replaces original Dell part numbers 04RXFK, 4RXFK, C1JKH, FFK56

Replacement battery for Dell XPS 14 L421X

This Dr. Battery Professional Series unit is a direct replacement for the Dell XPS 14 L421X Ultrabook series. It is built with OEM-grade Li-polymer cells and integrated safety circuitry for stable daily operation. The 11.1V 3500 mAh pack restores mobile runtime for compatible laptops.

Physical fit and electrical match required

The pack measures 8.0 x 1.5 x 0.8 cm and weighs 0.4 kg, so the battery bay must accommodate those exact dimensions. Voltage is fixed at 11.1V; a different voltage will not work and could damage the notebook. Confirm the original part number before installation.

Capacity decides runtime per charge

The 3500 mAh rating sets the total energy available between charges for this specific model. Buyers needing longer unplugged time per session cannot obtain more from this part. No higher-capacity alternative is described in the data.

How it compares

Measured against everything we stock in Laptop Chargers & Batteries, at today’s prices. Recalculated every night.

Price $44.99
Pricier than about 77% of the 27,790 comparable items (median $30.99).

Specifications

Product
Brand nameASUS
Model nameDell XPS 14 L421X Series
Part numberDR-PRO-LDE321-A
Product typeBattery
Power
Battery typeLi-polymer
Battery voltage rating11.1 V
Battery capacity3,500 mAh
Size & build
Measurements8.0 × 1.5 × 0.8
Compatibility
Compatible withDell 421x-1046 / Dell XPS 14 (L421X) / Dell XPS 14 L421X Ultrabook / Dell XPS 14 LX421
More details
Main functionNotebook

Questions about this item

Is this the right capacity for my Dell XPS 14 L421X?

Yes — the pack is rated at 3500 mAh and 11.1 V, matching the original specification for the XPS 14 L421X series.

How long will the 3500 mAh pack run my laptop?

The 3500 mAh capacity at 11.1 V delivers the same energy as the factory battery, giving comparable runtime for typical office and web tasks.

What connector does this battery use and will it fit my XPS 14?

It uses the Dell original connector for part numbers 04RXFK, 4RXFK, C1JKH and FFK56, ensuring a direct fit in the XPS 14 L421X ultrabook.

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