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Rectangular black lithium-polymer laptop battery with label showing model DS-CS-HPZ144NB and 4.1 Ah rating

Cameron & Co

Cameron & Co DS-CS-HPZ144NB laptop battery 4.1 Ah

SKU CH-57WQ-BWT83

Replacement lithium-polymer battery delivering 4.1 Ah for HP EliteBook 745 G4, 755 G4 and 840 G4 series

  • TypeBattery
  • Reliable power for HP EliteBook 745 G4 and 755 G4 laptops
  • 1 Ah capacity extends runtime between charges
  • Li-Polymer chemistry delivers stable voltage in a lightweight pack
  • Replaces original HP part numbers 854047-421 and 854108-850
  • Brand-new Cameron Sino DS-CS-HPZ144NB battery, ready to install

Replacement battery for HP EliteBook G4 series

The Cameron Sino DS-CS-HPZ144NB is a lithium-polymer battery built for HP EliteBook 745 G4, 755 G4 and 840 G4 models. It restores mobile power for professionals who rely on these business laptops daily. The 4.1 Ah capacity matches the original specification for consistent runtime. This new unit replaces part numbers 854047-421 and 854108-850 directly.

Steady discharge for full work sessions

The cell chemistry delivers stable voltage across the discharge curve rather than a brief peak. Users can expect reliable output through long meetings, travel legs or offline document work without sudden shutdowns. Li-Polymer construction resists capacity fade better than older chemistries under repeated cycles. It supports the power profile these EliteBook chassis were designed around.

Black polymer casing fits the original bay

The housing aligns with the internal battery compartment of the listed G4 notebooks, so no adapters or shims are required. Connectors match the motherboard header for a secure click-in fit. Black finish matches the OEM aesthetic inside the chassis. Buyers needing higher capacity than 4.1 Ah or compatibility with newer G5 and later EliteBooks should look elsewhere.

Highlights

  • Reliable power for HP EliteBook 745 G4 and 755 G4 laptops
  • 1 Ah capacity extends runtime between charges
  • Li-Polymer chemistry delivers stable voltage in a lightweight pack
  • Replaces original HP part numbers 854047-421 and 854108-850
  • Brand-new Cameron Sino DS-CS-HPZ144NB battery, ready to install

Specifications

BrandCameron Sino
ModelDS-CS-HPZ144NB
TypeBattery

Questions about this item

Does the 4.1 Ah Li-Polymer cell run hot when the EliteBook 840 G4 is under load all day?

The battery is a standard Li-Polymer pack rated at 4.1 Ah; it produces no more heat than the original HP unit during continuous use.

Which HP part numbers must my laptop already use so this DS-CS-HPZ144NB fits without modification?

It replaces HP part numbers 854047-421, 854108-850 and HSTNN-LB7J / TA03XL found in EliteBook 745 G4, 755 G4 and 840 G4 models.

Will the pack charge correctly on an older EliteBook 840 G4 that still has the factory 45 W adapter?

Yes, the battery accepts the same charging profile as the original TA03XL, so the existing 45 W adapter works normally.

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