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Rectangular 3-cell lithium-ion laptop battery in black plastic casing

PowerWarehouse

PowerWarehouse SI03XL 3-cell lithium-ion laptop battery 11.55V 4840mAh

SKU CH-CE02-0BRG0

Replacement 3-cell lithium-ion pack rated at 11.55V and 4840mAh for select Chromebook and EliteBook models

  • Battery type3 Cell Lithium-Ion
  • Compatible withCHROMEBOOK 14B-NA, 15AT-NB, PRO C645 G1, 14B-NB, ELITE C640
  • Compatible with multiple Chromebook and EliteBook models
  • Replaces over eight OEM part numbers for easy matching
  • 3-cell lithium-ion design delivers 11.55V 4840mAh capacity
  • Brand-new condition ensures full performance from first charge
  • Backed by a 12-month warranty from a US-based supplier

Replacement for HP Chromebook and Elite models

This new three-cell lithium-ion pack replaces the original SI03XL battery in a range of HP Chromebook 14B, 15A and Elite C640 or C645 devices. It matches the listed OEM part numbers including HSTNN-IB9S and M12329-AC1 so installation is a direct swap. Buyers needing a different voltage or a higher cell count will not be served by this unit.

Steady output through a full workday

The 11.55 V, 4840 mAh rating delivers consistent current across the discharge curve rather than a brief peak, supporting typical classroom or office workloads without sudden voltage sag. Internal cell balancing maintains stable performance over repeated cycles. Users who require hot-swap capability or an external charge indicator will not find those features here.

Voltage and capacity fix the fit

The 11.55 V / 4840 mAh specification is the single figure that confirms compatibility; a different voltage would prevent the laptop from recognising the pack. The three-cell lithium-ion chemistry matches the OEM design for the listed models. Anyone whose device calls for a 4-cell or 15 V pack must select a different part.

How it compares

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

Price $53.99
Pricier than about 85% of the 27,790 comparable items (median $30.99).

Specifications

Product
Part numberHSTNN-IB9S, HSTNN-OB1 V, M12329-1D1, M12329-AC1, M12585-005, SI03058XL, SI03058XL-PL, SI03XL
Power
Battery type3 Cell Lithium-Ion
Compatibility
Compatible withCHROMEBOOK 14B-NA, 15AT-NB, PRO C645 G1, 14B-NB, ELITE C640 14 G3, X360 14C-CC, 14CT-CD, ELITE C645 14 G2, X360 14C-CD, 15A-NB, PRO C640 G2

Questions about this item

Does the 11.55V 4840mAh 3-cell lithium-ion battery run hot or noisy during all-day use?

The 3-cell lithium-ion pack has no moving parts, so it produces no fan noise and generates only minimal warmth during normal charging and discharging cycles.

Must my laptop already use one of the listed OEM part numbers such as HSTNN-IB9S or SI03XL for this battery to fit?

Yes, the battery is designed to replace the exact OEM part numbers HSTNN-IB9S, HSTNN-OB1V, M12329-1D1, M12329-AC1, M12585-005, SI03058XL, SI03058XL-PL and SI03XL.

Will the SI03XL work in an older Elite C640 G2 or Pro C645 G1 that I keep as a backup machine?

The battery is compatible with Elite C640 G2, Pro C645 G1 and the other listed Chromebook and x360 models, so it will fit those older devices directly.

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