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Black rectangular lithium polymer laptop battery with connector on one end

NShi

NShi CS03XL laptop battery 11.4V 46.5Wh 3910mAh

SKU CH-SJNW-QCW4M MPN CS03XL

11.4 V lithium-polymer pack rated 46.5 Wh / 3910 mAh replaces CS03XL, HSTNN-IB6Y and 800231-1C1 in HP EliteBook 745, 755, 840, 850 G3-G4 and ZBook 15U G3-G4

  • Battery TypeLithium Polymer
  • 5 Wh capacity keeps your EliteBook running longer
  • 4 V 3910 mAh lithium-polymer cell matches original specs
  • Replaces HP part numbers CS03XL HSTNN-IB6Y 800231-1C1
  • Fits EliteBook 745 755 840 850 G3 G4 and ZBook 15U G3 G4
  • CE FCC RoHS certified with grade-A cells for safety

Compatible HP EliteBook and ZBook models

This new lithium polymer battery replaces part numbers CS03XL, HSTNN-IB6Y and 800231-1C1. It fits HP EliteBook 745, 755, 840 and 850 G3 and G4 series notebooks. It also fits HP ZBook 15U G3 and G4 series mobile workstations. Always verify the original battery part number before ordering.

Suitable for direct replacement.

Owners of the listed EliteBook and ZBook models who need a 11.4V 46.5Wh replacement will find this unit matches the original specifications. Buyers with different HP series or other brands should look elsewhere because the connector and form factor are specific to these part numbers. The battery is certified to CE, RoHS and FCC standards.

46.5Wh capacity for typical mobile workloads

The 3910mAh cell delivers 46.5Wh at 11.4V, providing a direct capacity match for the original battery in supported systems. It handles everyday office applications, web browsing and video playback within the designed runtime envelope. Heavy computational loads or extended off-grid use will exhaust the charge more quickly.

Highlights

  • 5 Wh capacity keeps your EliteBook running longer
  • 4 V 3910 mAh lithium-polymer cell matches original specs
  • Replaces HP part numbers CS03XL HSTNN-IB6Y 800231-1C1
  • Fits EliteBook 745 755 840 850 G3 G4 and ZBook 15U G3 G4
  • CE FCC RoHS certified with grade-A cells for safety

Specifications

Battery TypeLithium Polymer

Questions about this item

Which HP EliteBook or ZBook models accept the CS03XL 11.4V 46.5Wh battery?

The CS03XL fits EliteBook 745 G3 and G4, 755 G3 and G4, 840 G3 and G4, 850 G3 and G4, plus ZBook 15U G3 and G4.

Will the CS03XL connector match the original HSTNN-IB6Y battery in my EliteBook 840 G4?

Yes, the CS03XL replaces part numbers CS03XL, HSTNN-IB6Y and 800231-1C1, so the connector is identical.

After installing the CS03XL, how can I verify the 3910mAh capacity is reporting correctly?

Check the battery information in your OS or BIOS; it should show 11.4V and approximately 46.5Wh or 3910mAh when fully charged.

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