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Rectangular black lithium-ion battery pack, 10.75 by 3 by 0.2 inches, 0.7 lb

GreenTechLLC

GreenTechLLC C31N2005 50Whr laptop battery for ASUS CX3400FMA CX9400CEA B3402FBA B5602CBA

SKU CH-8YT0-929JT

A 50 Whr 3-cell lithium-ion replacement battery for compatible ASUS laptops including CX3400FMA, CX9400CEA, B3402 and B5602 series models

  • Battery type3 Cell Lithium-Ion
  • Battery voltage rating11.55 V
  • Battery capacity4335mah
  • Measurements10.75 × 3 × 0.2 in
  • Product colorBlack
  • Product typeBattery
  • 50 Whr capacity keeps compatible ASUS models running longer
  • 55 V lithium-ion cell matches original voltage for stable power
  • Fits CX3400FMA CX9400CEA B3402 series B5602 series laptops
  • Replaces OEM part numbers C31N2005 3ICP5/70/82 0B200-03810100
  • Tested for correct voltage circuit protection low self-discharge CE FCC RoHS certified

Replacement Battery for ASUS CX3400FMA

This 50Whr lithium-ion pack replaces the original C31N2005 unit in compatible ASUS laptops including the CX3400FMA, CX9400CEA, B3402FBA and B5602CBA models. It delivers 11.55V from three cells rated at 4335mAh. The battery arrives new and tested for voltage stability and circuit protection.

Fits Directly Into Existing Chassis Without

The pack measures 10.75 X 3 X 0.2 inches and weighs 0.7lb, matching the OEM form factor so it slots into the same bay using the original screws and connector. No adapter cables or firmware updates are required. CE, FCC and RoHS certifications confirm the safety circuitry meets regulatory baselines.

Sustains Steady Output Through Long Work Sessions

Under continuous load the three-cell design maintains stable current with low self-discharge, avoiding the voltage sag that appears in degraded packs after short bursts. The 50Whr capacity supports extended mobile use between charges. Testing verifies consistent performance across the full discharge curve.

How it compares

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

Price $61.99
Pricier than about 90% of the 27,790 comparable items (median $30.99).

Specifications

Product
Brand nameGreenTech
Model nameC31N2005, 3ICP5/70/82, 0B200-03810100
Part numberC31N2005, 3ICP5/70/82, 0B200-03810100
Product colorBlack
Product typeBattery
Power
Battery type3 Cell Lithium-Ion
Battery voltage rating11.55 V
Battery capacity4335mah
Size & build
Measurements10.75 × 3 × 0.2 in
Product weight0.7 lb (0.32 kg)
Compatibility
Compatible withASUS CX3400FMA, CX9400CEA, B3402, B3402FBA, B3402FEA, B3402FVA, B5602CBA, B5602CVA, B5602FBA

Questions about this item

How long will the 50Whr capacity last under continuous load?

The 50Whr, 4335mAh lithium-ion pack delivers runtime proportional to the laptop's power draw; heavier workloads reduce per-charge hours accordingly.

Does the battery run hot or draw extra power during all-day use?

The 11.55V, 3-cell design matches the original voltage and includes circuit protection for stable current and low self-discharge during extended operation.

Which ASUS models must I already own for this C31N2005 to fit?

It fits ASUS CX3400FMA, CX9400CEA, B3402, B3402FBA, B3402FEA, B3402FVA, B5602CBA, B5602CVA and B5602FBA.

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