We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
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

  • CompatibilityCompatible with HP HP ProBook 6440b 6445b 6450b 6540b 6545b
  • Battery TypeLithium-Ion
  • 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.

Highlights

  • 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

Specifications

CompatibilityCompatible with HP HP ProBook 6440b 6445b 6450b 6540b 6545b 6550b 6555b
Battery TypeLithium-Ion

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.

Also in this aisle

People compared these

Same shelf, same checkout — eight coins and a 30-minute rate lock.