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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.

How it compares

Measured against everything we stock in Cable Locks & Laptop Extras, at today’s prices. Recalculated every night.

Price $44.99
Pricier than about 81% of the 8,808 comparable items (median $16.99).

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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