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Rectangular black 6-cell lithium-ion laptop battery with label showing 11.1V 65Wh

FOCUSTEC

FOCUSTEC N3X1D 11.1V 65Wh 6-cell laptop battery

SKU CH-Z71H-13K32

11.1 V 65 Wh 6-cell lithium-ion replacement battery for Dell Latitude and Precision M2800 models, rated for 500 recharge cycles

  • Battery typeLithium-Ion
  • 1V 65Wh capacity powers Dell Latitude models for extended runtime
  • 6-cell lithium-ion design delivers up to 500 recharge cycles for long service life
  • Grade A cells enable fast charging with low power consumption
  • Built-in circuit protection safeguards against overcharge and short circuits
  • Replaces N3X1D, 8858X, T54FJ across E6420, E6540, E6440, E5530, E5430, E6520, M2800 series

Compatible Dell Latitude & Precision models

This 11.1V 65Wh lithium-ion battery replaces the original Dell N3X1D pack for Latitude E6420, E6540, E6440, E5530, E5430, E6520 and Precision M2800 series laptops. It also matches part numbers 8858X and T54FJ for direct swap-in compatibility.

Six-cell layout and built-in protection

The six Grade A cells deliver 65Wh of capacity while the integrated circuit protection guards against over-charge, over-discharge and short circuits. No extra cabling or firmware updates are required; the pack fits the existing battery bay and charges through the laptop's standard power circuit.

Up to 500 recharge cycles

Rated for up to 500 full cycles, the pack provides extended runtime for daily mobile workloads. It is not suited for users who need higher-wattage configurations or hot-swap capability beyond the single-bay design.

How it compares

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

Price $36.99
Pricier than about 66% of the 27,790 comparable items (median $30.99).

Specifications

Power
Battery typeLithium-Ion

Questions about this item

How many recharge cycles can the 65Wh battery deliver before capacity drops?

The battery is rated for up to 500 recharge cycles, so you can expect extended daily use before noticeable capacity loss.

Does the built-in circuit protection keep the 11.1V pack from overheating during continuous operation?

Built-in circuit protection manages voltage, current and temperature to maintain safety and stability even under sustained load.

Which Dell laptop models must I already own for this N3X1D pack to fit and work?

It replaces the original battery in Latitude E6420, E6520, E6440, E6540, E5430, E5530 and Precision M2800 series systems.

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