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Rectangular black lithium-ion laptop battery with connector pins

FOCUSTEC

FOCUSTEC 14.8V 2600mAh HS04 HS03 laptop battery

SKU CH-3FXA-HZ4T5

Replacement lithium-ion battery rated 14.8 V and 2600 mAh for select HP Pavilion and ProBook notebooks

  • Battery TypeLithium-Ion
  • 8 V 2600 mAh lithium-ion delivers 38 Wh of energy for extended run-time
  • Replaces HP HS03 HS04 and part numbers 807956-001 807957-001 across Pavilion and ProBook models
  • Fits HP 240 G4 245 G4 250 G4 255 G4 256 G4 series and 15-af 15-ay 14-an 15-ba notebooks
  • CE FCC RoHS certified for safety and environmental compliance
  • Brand-new condition ensures full capacity from first charge

14.8V 2600mAh Lithium-Ion Replacement Battery

This 14.8V 2600mAh lithium-ion battery replaces HS04 and HS03 packs in compatible HP Pavilion and ProBook notebooks. It fits models including the 240 G4, 245 G4, 250 G4 and 255 G4 series as well as 15-af and 15-ay chassis. The 38 Wh cell is built to match the original form factor and connector layout. Buyers needing a different voltage or a higher capacity pack will not be served by this unit.

Sustained Output and Cycle Life

The lithium-ion chemistry delivers a steady 14.8V through extended work sessions rather than a brief peak. Cells are tested to hold charge over repeated cycles, reducing the voltage sag that appears in aged packs. This behaviour supports consistent run time during long meetings or travel legs. Users who require hot-swap capability or a secondary bay battery will not find that feature here.

Direct Swap for HS03 and HS04 Part Numbers

The battery replaces OEM part numbers 807956-001, 807957-001, HSTNN-LB6U and HSTNN-LB6V without adapter cables or firmware updates. It upgrades worn original cells that no longer hold a full charge. The jump is worth it when the existing pack reports reduced capacity or triggers early shutdown. Machines outside the listed HP Pavilion and ProBook families are not supported.

Highlights

  • 8 V 2600 mAh lithium-ion delivers 38 Wh of energy for extended run-time
  • Replaces HP HS03 HS04 and part numbers 807956-001 807957-001 across Pavilion and ProBook models
  • Fits HP 240 G4 245 G4 250 G4 255 G4 256 G4 series and 15-af 15-ay 14-an 15-ba notebooks
  • CE FCC RoHS certified for safety and environmental compliance
  • Brand-new condition ensures full capacity from first charge

Specifications

Battery TypeLithium-Ion

Questions about this item

How much heat does the 14.8 V lithium-ion cell generate during a full day of use?

The battery runs at 14.8 V and 2600 mAh, so heat output stays low under normal laptop loads; no active cooling is required.

What must my HP notebook already have for this HS04 HS03 pack to fit and charge?

Your laptop must use one of the listed part numbers such as 807956-001, 807957-001, HSTNN-LB6U or HSTNN-LB6V and accept a 14.8 V lithium-ion pack.

Will this 38 Wh replacement work alongside the original charger on a 250 G3 or 240 G4?

Yes, it is fully compatible with the 250 G3, 240 G4 and other listed models and charges normally with the existing AC adapter.

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