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Rectangular black lithium-ion laptop battery with label showing 46Wh 11.4V

FOCUSTEC

FOCUSTEC CS03XL 46Wh 11.4V laptop battery

SKU CH-8RVK-3FFGF

46Wh 11.4V Li-ion replacement battery with built-in circuit protection for HP EliteBook 745 755 840 848 850 G3 G4 and ZBook 15u G3 G4

  • Battery TypeLithium-Ion
  • 46Wh capacity powers compatible HP Elitebook and ZBook models
  • 4V lithium-ion chemistry matches original battery specifications
  • Replaces multiple HP part numbers including HSTNN-UB6S and 800513-001
  • Built-in circuit protection guards against overcharge and deep discharge
  • Direct fit for Elitebook 745, 755, 840, 848, 850 G3 G4 and ZBook 15u G3 G4

Direct replacement for select HP EliteBook

This 46Wh lithium-ion battery operates at 11.4V and matches part numbers including CS03XL, HSTNN-UB6S, HSTNN-IB6Y, 800231-141 and 800513-001. It fits EliteBook 745, 755, 840, 848 and 850 G3 and G4 models plus ZBook 15u G3 and G4 mobile workstations. Built-in circuit protection guards against overcharging and deep discharge.

Simple internal swap with built-in safety circuits

The battery sits inside the chassis and connects to the mainboard via the standard HP connector; no soldering or adapter cables are required. Most installations take a few minutes with a small Phillips screwdriver. The integrated protection circuitry prevents overcharge and over-discharge, reducing the risk of swelling or sudden shutdown after fitting.

46Wh capacity at 11.4V determines runtime

This single figure decides whether the pack meets the original runtime specification for the listed EliteBook and ZBook models. Buyers needing a higher capacity cell or a different voltage will not be served by this part. Verify the Wh and V ratings on the original battery before ordering.

Highlights

  • 46Wh capacity powers compatible HP Elitebook and ZBook models
  • 4V lithium-ion chemistry matches original battery specifications
  • Replaces multiple HP part numbers including HSTNN-UB6S and 800513-001
  • Built-in circuit protection guards against overcharge and deep discharge
  • Direct fit for Elitebook 745, 755, 840, 848, 850 G3 G4 and ZBook 15u G3 G4

Specifications

Battery TypeLithium-Ion

Questions about this item

How can I confirm the CS03XL battery is working correctly after installing it in my EliteBook 840 G3?

The laptop should power on and hold a charge. The operating system will report the 46Wh capacity and 11.4V voltage. Built-in circuit protection manages overcharge and discharge safety automatically.

What is included with the CS03XL battery and do I need any extra parts to fit it?

The package contains the replacement battery unit only. It directly replaces HP part numbers 800231-141, 800513-001, HSTNN-UB6S and HSTNN-IB6Y. No separate cables, tools or adapters are required for installation.

Which part number should I match to be sure this 46Wh battery fits my ZBook 15u G4?

Check the label on your original battery for part numbers CS03XL, CS03, 800231-141, 800513-001, HSTNN-UB6S, HSTNN-IB6Y, HSTNN-I33C-4, HSTNN-I33C-5, HSTNN-I41C-4 or HSTNN-I41C-5. This unit replaces all of them.

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