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Black rectangular lithium-ion laptop battery with label showing TA03XL 4420mAh 51WH 11.55V

KingSener

KingSener TA03XL laptop battery 4420mAh 51WH 11.55V for HP EliteBook 755 G4 840 G4 850 G4 848 G4

SKU CH-AT60-W0F00 MPN TA03XL

Replacement lithium-ion battery rated 4420 mAh 51 Wh 11.55 V for HP EliteBook 755 G4 840 G4 850 G4 848 G4

  • ColorBlack
  • TypeBattery
  • Compatibility4420mAh/51WH
  • Battery TypeLithium-Ion
  • Battery Voltage11.55V
  • Battery Capacity4420mAh
  • Extended runtime from 4420mAh 51WH lithium-ion cell
  • Reliable power delivery at 11.55V for demanding workloads
  • Direct replacement for TA03XL 854047-421 and HSTNN part numbers
  • Fits HP EliteBook 755 G4 840 G4 850 G4 848 G4 series
  • Brand new condition with two-year manufacturer warranty included

Replacement battery for EliteBook G4

The KingSener TA03XL is a new lithium-ion replacement battery built for HP EliteBook 755 G4, 840 G4, 850 G4 and 848 G4 series notebooks. It delivers 4420mAh capacity at 11.55V for 51WH total energy and replaces original part numbers including 854047-421 and HSTNN-LB7J. The black pack installs directly without modification.

Suits owners of listed EliteBook models

This unit fits the four G4 series named above and matches the voltage and capacity those systems expect. It is not for earlier or later EliteBook generations, other HP families, or laptops that require a different voltage or connector layout. Buyers needing higher capacity or a different form factor should look elsewhere.

Capacity and voltage decide fit

The single specification that confirms compatibility is the 4420mAh capacity combined with the 11.55V rating, which must match the original battery label exactly. If the original shows different mAh or voltage values this pack will not work correctly. Verify those two numbers before ordering.

Highlights

  • Extended runtime from 4420mAh 51WH lithium-ion cell
  • Reliable power delivery at 11.55V for demanding workloads
  • Direct replacement for TA03XL 854047-421 and HSTNN part numbers
  • Fits HP EliteBook 755 G4 840 G4 850 G4 848 G4 series
  • Brand new condition with two-year manufacturer warranty included

Specifications

BrandKingsener
ModelTA03XL
Part NumberTA03XL
ColorBlack
TypeBattery
Compatibility4420mAh/51WH
Battery TypeLithium-Ion
Battery Voltage11.55V
Battery Capacity4420mAh

Questions about this item

Does the 11.55V KingSener TA03XL battery generate noticeable heat during a full workday?

The 4420mAh lithium-ion pack runs at 11.55V and 51Wh; it warms slightly under load but stays within normal operating temperature for EliteBook 755 G4, 840 G4, 850 G4 and 848 G4 chassis.

Must the laptop already have a working charging circuit and the correct HP part-number bay for this TA03XL to function?

Yes — the battery replaces HP part numbers 854047-421, HSTNN-LB7J, HSTNN-LB7L, HSTNN-I75C-4, HSTNN-I75C-5, HSTNN-I02C-4 and HSTNN-I02C-5, so the laptop must accept one of those.

Will the 4420mAh TA03XL fit and charge in an EliteBook 840 G4 that originally used a lower-capacity HSTNN-I75C-4 pack?

It matches the 11.55V voltage and the listed part numbers including HSTNN-I75C-4, so it fits the same bay and charges normally in the 840 G4.

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