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Black rectangular lithium-ion laptop battery with connector strip

Beisite

Beisite C31N2005 50Wh 11.55V laptop battery for Asus CX9 CX3 B3402

SKU CH-613W-TR22H

50 Wh, 11.55 V lithium-ion replacement battery for Asus Chromebook CX9, CX3 and ExpertBook B3 Flip models

  • Battery typeLithium-Ion
  • Product colorBlack
  • Product typeBattery
  • 50 Wh capacity supports extended use between charges
  • 55 V lithium-ion chemistry matches original specifications
  • Replaces C31N2005 and 0B200-03810000 part numbers
  • Fits Asus Chromebook CX9 CX9400CEA and CX3 CX3400FMA series
  • Compatible with ExpertBook B3 Flip B3402 models

Replacement Battery for Asus Chromebook CX9 CX3

This new lithium-ion battery replaces part numbers C31N2005 and 0B200-03810000. It fits Asus Chromebook CX9 CX9400CEA series and Chromebook CX3 CX3400FMA series devices. It also fits ExpertBook B3 Flip B3402 models. Buyers with other Asus laptops or different Chromebook lines cannot use this unit.

Voltage and Capacity Limits

The cell operates at 11.55V and stores 50Wh of energy. Lithium-ion chemistry sets the practical cycle life and self-discharge rate. The pack has no built-in charge controller beyond the laptop's own management circuit. Users who need a different voltage or a higher watt-hour rating must choose another part.

50Wh Capacity Decides Fit

The 50Wh rating is the single specification that determines whether this battery matches the original equipment. A lower or higher capacity changes run time and may not sit in the chassis correctly. Verify the original battery label shows 50Wh before ordering.

How it compares

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

Price $39.99
Pricier than about 71% of the 27,790 comparable items (median $30.99).

Specifications

Product
Brand nameC31N2005
Model nameC31N2005
Product colorBlack
Product typeBattery
Power
Battery typeLithium-Ion

Questions about this item

How do I confirm this 50Wh C31N2005 battery fits my specific Asus model?

Match the part number C31N2005 or 0B200-03810000 on your original battery, or check if your laptop appears in the supported list covering CX9 CX9400CEA, CX3 CX3400FMA and ExpertBook B3 Flip B3402 series.

What runtime can I expect from the 50Wh capacity at 11.55V in daily use?

The 50 watt-hour rating at 11.55 volts delivers the same energy as the factory pack; actual hours depend on your screen brightness, workload and Chrome OS power settings.

Does the C31N2005 use a standard connector that plugs straight into the motherboard?

Yes, it is built to the original C31N2005 specification so the existing connector mates directly with the motherboard header on supported Asus Chromebook and ExpertBook models.

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