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Rectangular black lithium-ion laptop battery with label showing SR03XL 4550mAh 11.55V

KingSener

KingSener SR03XL laptop battery 4550mAh 11.55V

SKU CH-3DKR-A4KZH MPN SR03XL

Replacement lithium-ion battery delivering 4550mAh at 11.55V for compatible HP Pavilion and Envy x360 laptops

  • Battery typeLithium-Ion
  • Battery voltage rating11.55 V
  • Battery capacity4,550 mAh
  • Product colorBlack
  • Product typeBattery
  • Compatible with4,550 mAh/52.5WH
  • 4550 mAh capacity supports longer sessions between charges
  • 55 V output matches original laptop power requirements
  • 5 Wh energy rating delivers reliable all-day runtime
  • Lithium-ion cells provide stable discharge without memory effect
  • Replaces SR03XL, HSTNN-DB8Q and multiple HP part numbers

Replacement battery for HP Pavilion Gaming

This KingSener SR03XL lithium-ion battery replaces the original HSTNN-DB8Q and L08934-2B1 packs in HP Pavilion Gaming 15-cx and Envy x360 15-cn and 15-cp series laptops. It is built for owners whose factory cell no longer holds a charge and who want a direct drop-in spare.

4550 mAh capacity at 11.55 V

The pack stores 52.5 Wh of energy at its rated voltage, which defines the practical runtime ceiling for any workload. Capacity loss over repeated cycles will gradually reduce available minutes, and the battery cannot exceed the power delivery limits set by the laptop's own charging circuit.

Simple internal swap with connector alignment

Installation requires opening the chassis, disconnecting the old pack and mating the new connector exactly as keyed; reversed insertion or debris in the socket are the most common causes of a no-power symptom. Users who skip the battery calibration cycle after fitting may see inaccurate charge reporting for the first few charges.

How it compares

Measured against everything we stock in Laptop Chargers & Batteries, at today’s prices. Recalculated every night.

Price $41.99
Pricier than about 73% of the 27,790 comparable items (median $30.99).

Specifications

Product
Brand nameKingsener
Model nameSR03XL
Part numberSR03XL
Product colorBlack
Product typeBattery
Power
Battery typeLithium-Ion
Battery voltage rating11.55 V
Battery capacity4,550 mAh
Compatibility
Compatible with4,550 mAh/52.5WH

Questions about this item

Which SR03XL capacity matches the 52.5WH rating?

The SR03XL is offered in a single 4550mAh / 52.5WH capacity, so there is no alternate version to choose from.

What runtime does the 4550mAh capacity deliver in a Pavilion 15-cx or Envy x360?

The 4550mAh / 52.5WH rating means the battery stores 52.5 watt-hours; actual runtime depends on the laptop's power draw and workload.

Does the 11.55V voltage match the original HSTNN-DB8Q specification?

Yes, the SR03XL is rated at 11.55V, which matches the voltage of the HSTNN-DB8Q and other listed replacement part numbers.

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