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Rectangular black lithium-ion laptop battery, 71Wh 15.4V

Beisite

Beisite C42N1728 71Wh 15.4V laptop battery

SKU CH-3S8K-MFSDE

A 15.4 V, 71 Wh lithium-ion replacement battery compatible with numerous Asus Zenbook Pro 15 models including the UX550 and UX580 series

  • Battery typeLithium-Ion
  • Product colorBlack
  • Product typeBattery
  • 71Wh capacity extends runtime on compatible Asus ZenBook Pro models
  • 4V lithium-ion chemistry matches original power requirements
  • Replaces part numbers C42N1728 and 0B200-02520100 for direct fit
  • Fits UX550, UX580 and U5500 series laptops listed in compatibility data
  • Brand-new condition with 12-month supplier warranty included

Replacement battery for Asus Zenbook Pro 15

This 15.4V 71Wh lithium-ion unit replaces part numbers C42N1728 and 0B200-02520100. It fits a wide range of UX550, UX580, U5500 and U555 series notebooks. The black pack is brand new and carries a 12-month warranty. Owners of compatible Asus ultraportables can restore original runtime with a direct swap.

71Wh capacity for daily workloads

The 71 watt-hour rating supplies enough energy for typical office, browsing and media tasks on supported 15-inch models. Runtime scales with screen brightness, CPU load and peripheral use. Heavy rendering or sustained gaming will drain the pack faster. Users needing multi-day autonomy without a charger will find the capacity limiting.

Drop-in fit for listed chassis

The battery matches the mechanical and electrical layout of the original C42N1728, so no adapter or firmware step is required. It frees the owner from hunting obsolete OEM stock. Builders repairing units outside the supported model list must verify compatibility before purchase.

How it compares

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

Price $42.99
Pricier than about 74% of the 27,790 comparable items (median $30.99).

Specifications

Product
Brand nameC42N1728
Model nameC42N1728
Product colorBlack
Product typeBattery
Power
Battery typeLithium-Ion

Questions about this item

Will the C42N1728 15.4V 71Wh battery fit my Asus UX580GD without changing the charger?

Yes, it replaces part numbers C42N1728 and 0B200-02520100 and matches the original 15.4V 71Wh specification, so the existing charger works normally.

How can I confirm the new battery is recognised correctly after installation?

Power on the laptop, open the battery report in Windows or the BIOS, and verify it shows 15.4V, 71Wh and the C42N1728 model name.

Does the package include the C42N1728 battery only, or are tools and screws supplied as well?

The box contains the new C42N1728 lithium-ion battery; installation tools and replacement screws are not included and must be sourced separately.

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