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Rectangular black lithium-ion laptop battery with six cells and HP branding

HP

HP ProBook 6440b 6445b 6450b 6540b 6545b 6550b 6555b 11.1V 5200mAh 6-Cell Laptop Battery

SKU CH-N4NQ-PFBE6

Lithium-Ion 11.1V 5200mAh 6-cell replacement battery compatible with HP ProBook 6440b, 6445b, 6450b, 6540b, 6545b, 6550b and 6555b models

  • Battery typeLithium-Ion
  • Compatible withCompatible with HP HP ProBook 6440b 6445b 6450b 6540b 6545b
  • 1 V lithium-ion chemistry delivers stable voltage
  • 5200 mAh capacity extends runtime between charges
  • Six premium cells balance weight and endurance
  • Fits ProBook 6440b 6445b 6450b 6540b 6545b 6550b 6555b exactly
  • CE and RoHS certified for safety and environmental compliance

Compatible ProBook Models

This 6-cell lithium-ion battery is built for HP ProBook 6440b, 6445b, 6450b, 6540b, 6545b, 6550b and 6555b laptops. It delivers an 11.1V output and a 5200mAh capacity to restore mobile runtime. The pack is designed as a direct replacement for the original unit.

Certification and Warranty

The battery carries CE and RoHS certification, confirming compliance with safety and environmental standards. A full one-year replacement warranty covers defects in materials and workmanship. No additional software or accessories are included in the package.

Build and Daily Use

Premium-grade cells are engineered for long-term reliability and consistent performance through everyday charge cycles. The 6-cell form factor matches the original chassis dimensions for a secure fit without modification. Users simply swap the old pack and resume work without compatibility concerns.

How it compares

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

Price $18.99
Cheaper than about 74% of the 27,790 comparable items (median $30.99).

Specifications

Power
Battery typeLithium-Ion
Compatibility
Compatible withCompatible with HP HP ProBook 6440b 6445b 6450b 6540b 6545b 6550b 6555b

Questions about this item

How many charge cycles will the 6-cell 5200mAh lithium-ion pack deliver before it needs replacing?

The battery is built with premium cells and carries a one-year replacement warranty covering defects in materials and workmanship.

What is the first limit reached during continuous discharge at 11.1V?

The 5200mAh capacity rating defines the total energy available; once depleted the pack must be recharged before further use.

How much heat does the 6-cell battery produce when the laptop runs all day?

Lithium-ion chemistry generates minimal heat during normal operation, and the pack meets CE and RoHS safety standards for thermal performance.

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