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Rectangular black lithium-polymer laptop battery pack

E-buy

E-buy C21N1638 38Wh laptop battery for Asus VivoBook 14 X442U

SKU CH-1WSV-Z8959

38 Wh lithium-polymer replacement battery for Asus VivoBook 14 X442U series laptops

  • Battery typeLaptop Batteries
  • Product typeBattery
  • Li-polymer chemistry keeps weight low while delivering 38Wh capacity
  • 7V output matches original specification for stable system operation
  • 4940mAh rating supports extended unplugged sessions
  • Replaces Asus part C21N1638 for direct compatibility
  • Fits VivoBook 14 X442U and related 442 series models

Compatible 38 Wh battery for VivoBook 14 X442U

This 38 Wh lithium-polymer replacement battery fits Asus VivoBook 14 X442U, X442UQ, F442U, F442UR, F442UF, A480U, A480UF, A480UR, A480UA, R419U and R419UR models. It restores original run-time for owners of those specific laptops.

Verify exact model number before ordering

Check the label on your original battery for part number C21N1638 or 0B200-02630000 to confirm compatibility. The replacement operates at 7.7 V and 4940 mAh, matching the factory specifications for the listed series.

No extra accessories or software included

The package contains only the black battery unit itself; no tools, cables, drivers or management utilities are supplied. Buyers who need installation kits or diagnostic software must source them separately.

How it compares

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

Price $38.99
Pricier than about 70% of the 27,790 comparable items (median $30.99).

Specifications

Product
Product typeBattery
Power
Battery typeLaptop Batteries

Questions about this item

Does the 38Wh C21N1638 battery arrive as a single unit or are screws and tools included?

The battery ships as a single 7.7V 4940mAh Li-polymer unit; mounting screws and opening tools are not supplied.

My model list shows both X442U and A480U — which 38Wh version do I need?

The C21N1638 fits every listed model — X442U, X442UQ, X442UF, F442U, F442UR, F442UF, A480U, A480UA, A480UF, A480UR, R419U and R419UR — so choose this one part number.

What runtime can I expect from the 38Wh rating in a VivoBook 14 X442U?

At 7.7V and 4940mAh the pack stores 38Wh; actual runtime depends on screen brightness, CPU load and battery health, but it restores the original capacity for this chassis.

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