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Rectangular black lithium-ion laptop battery with label listing HP part numbers

FOCUSTEC

FOCUSTEC CA06 CA06XL laptop battery for HP ProBook 640 645 650 655 G0 G1

SKU CH-1A3A-JQF3B

Replacement lithium-ion battery for HP ProBook 640, 645, 650 and 655 G0 and G1 models, delivering 1.5 to 3 hours of use

  • Battery TypeLithium-Ion
  • Compatible with HP ProBook 640 645 650 655 G0 G1
  • Replaces original HP spare parts 718677-421 718678-421 718755-001 718756-001
  • Lithium-Ion grade A cells deliver fast charges and low power consumption
  • Built-in circuit protection safeguards against overcharge and short circuits
  • Expected run time 1.5 to 3 hours depending on usage

Replacement Battery for HP ProBook

This lithium-ion battery replaces the original CA06 and CA06XL cells in HP ProBook 640, 645, 650 and 655 G0 and G1 models. It matches spare part numbers 718677-421, 718678-421, 718755-001 and 718756-001 along with the HSTNN-DB4Y, LB4X, LB4Y, LB4Z and LP4Z codes. Buyers who need a different voltage or form factor should look elsewhere.

Thermals and Power Behaviour

Grade A cells and built-in circuit protection keep charge cycles stable and power draw low during normal use. The pack is CE and RoHS certified, indicating compliance with safety and substance restrictions. Expected run time per charge is 1.5 to 3 hours, varying with workload and system settings.

Deciding Specification

Compatibility with the listed HP ProBook series and spare part numbers is the single factor that determines fit. Verify your laptop model and original part number before ordering.

Highlights

  • Compatible with HP ProBook 640 645 650 655 G0 G1
  • Replaces original HP spare parts 718677-421 718678-421 718755-001 718756-001
  • Lithium-Ion grade A cells deliver fast charges and low power consumption
  • Built-in circuit protection safeguards against overcharge and short circuits
  • Expected run time 1.5 to 3 hours depending on usage

Specifications

Battery TypeLithium-Ion

Questions about this item

How do I install the CA06 battery in my HP ProBook 640 G1 and which step do people get wrong?

Power off the laptop, unplug the AC adapter, slide the release latch and lift the old battery out; the step often missed is pressing the new CA06 firmly until the latch clicks audibly.

What maintenance or replacement will the CA06XL battery need later?

Lithium-ion cells lose capacity over time; when run time falls well below the quoted 1.5–3 hours you will need a new battery.

What limit shows up first on the CA06 under sustained heavy use?

The built-in protection circuit will cut power if the pack overheats or draws excessive current, ending the session before the cells are damaged.

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