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Rectangular black laptop battery with six cells and label showing voltage and capacity

PISKEKAT

PISKEKAT CM03XL 6 Cell Li-ion 11.1V 4000mAh laptop battery

SKU CH-1QRA-41M5D

A 6-cell 11.1 V 4000 mAh Li-ion replacement battery for HP EliteBook 740 745 750 755 840 845 850 855 G1 G2 and ZBook 14 15u models

  • Battery TypeLaptop Batteries
  • 6-cell Li-ion design delivers 4000 mAh capacity at 11.1 V for extended runtime
  • CE and RoHS certified with built-in circuit protection for safe, stable operation
  • Fits HP EliteBook 740 745 750 755 840 845 850 855 G1 G2 and ZBook 14 15u models
  • Replaces OEM part numbers HSTNN-DB4Q HSTNN-L11C-5 HSTNN-LB4R 717376-001 CM03 CM03050XL
  • Rated for up to 600 recharge cycles with same size and shape as original battery

Replacement Battery for HP EliteBook and ZBook

The PISKEKAT CM03XL is a new lithium-ion laptop battery built for HP EliteBook 740 745 750 755 840 845 850 855 G1 G2 series and HP ZBook 14 15u models. It matches the original HSTNN-DB4Q HSTNN-L11C-5 HSTNN-LB4R 717376-001 CM03 CM03050XL part numbers. This unit suits owners of those specific notebooks who need a direct swap. It does not support other laptop families or later EliteBook generations.

6 Cell 11.1V 4000mAh Capacity and Cycle Life

The pack uses six cells rated at 11.1V with 10.8V compatibility and a 4000mAh capacity. It is rechargeable up to 600 times over its service life. CE and RoHS certifications plus built-in circuit protection cover safety and stability. Users needing higher watt-hour ratings or a different voltage will not find them here.

Same Size Shape as OEM for Straightforward Fit

The battery shares the exact dimensions and shape of the original equipment unit so it seats in the existing bay without modification. No extra cables or adapters are required. Builders working on unsupported models or those needing a different form factor cannot use this pack.

Highlights

  • 6-cell Li-ion design delivers 4000 mAh capacity at 11.1 V for extended runtime
  • CE and RoHS certified with built-in circuit protection for safe, stable operation
  • Fits HP EliteBook 740 745 750 755 840 845 850 855 G1 G2 and ZBook 14 15u models
  • Replaces OEM part numbers HSTNN-DB4Q HSTNN-L11C-5 HSTNN-LB4R 717376-001 CM03 CM03050XL
  • Rated for up to 600 recharge cycles with same size and shape as original battery

Specifications

Battery TypeLaptop Batteries

Questions about this item

Will the 11.1 V 4000 mAh battery run in my EliteBook 840 G1 that originally used a 10.8 V pack?

Yes, the battery is rated 11.1 V and listed as 10.8 V compatible, so it works in the EliteBook 840 G1 and other G1 G2 models.

How can I confirm the battery is charging correctly after I install it?

The laptop’s power LED should show the charging indicator and the OS battery meter will report increasing capacity; the built-in circuit protection manages safety automatically.

Does the package include a screwdriver or only the battery itself?

Only the 6 cell Li-ion battery is supplied; any tools needed for the swap must be provided separately.

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