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Black rectangular laptop battery with six cells and label text

HP

HP HSTNN-IB9M 11.58V 83.14Wh 6821mAh 6-cell Li-ion battery accessory

SKU CH-1N3V-H1DFG MPN HSTNN-IB9M

Replacement 6-cell lithium-ion battery for HP Envy 15-EP series laptops, rated at 11.58 V and 83.14 Wh

  • Genuine HP replacement for Envy 15-EP series
  • 14 Wh capacity supports extended mobile use
  • 6-cell lithium-ion design at 11.58 V
  • 6821 mAh charge rating for reliable runtime
  • Matches part numbers L85853-1C1 and L85885-005

Genuine HP Envy 15-EP Battery

This 6-cell lithium-ion battery is built for the HP Envy 15-EP series and carries part number L85853-1C1. It delivers 11.58V and 83.14Wh of capacity to restore mobile runtime for compatible notebooks. The unit is a direct replacement for the original KL06XL pack.

Sustained discharge performance

Rated at 6821mAh, the pack supplies steady current during long work sessions instead of only brief peaks. Internal 3ICP7/52/58-2 cells maintain voltage stability across the discharge curve. Users can expect consistent output until the reserve is depleted.

Thermal and power behaviour

Lithium-ion chemistry runs cool during typical office loads and does not require active cooling. Normal charging completes within a few hours from the laptop's own adapter. No extra power draw or fan noise is introduced by the battery itself.

Highlights

  • Genuine HP replacement for Envy 15-EP series
  • 14 Wh capacity supports extended mobile use
  • 6-cell lithium-ion design at 11.58 V
  • 6821 mAh charge rating for reliable runtime
  • Matches part numbers L85853-1C1 and L85885-005

Specifications

No published specifications for this item yet.

Questions about this item

Does the 11.58 V 83.14 Wh 6-cell battery run hot or draw extra power during all-day use?

The 6-cell Li-ion pack operates at 11.58 V and 83.14 Wh, matching the original thermal and power profile for the Envy 15-EP series.

What must I already own to install the HSTNN-IB9M battery?

You need an HP Envy 15-EP series laptop that accepts part numbers L85853-1C1 or L85885-005; no extra tools or cables are required.

Will this KL06XL 3ICP7/52/58-2 battery work alongside the original charger and BIOS on my older Envy 15-EP?

Yes, the 6821 mAh cell uses the same voltage and connector, so the existing charger and firmware recognise it without changes.

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