We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Black rectangular lithium-polymer laptop battery, model C31N1831

POWER-FENG

POWER-FENG 50Wh C31N1831 laptop battery

SKU CH-BG17-E07E4

A 50 Wh 11.55 V lithium-polymer replacement battery for select Asus 574 and 3540 series laptops

  • TypeBattery
  • Battery TypeLaptop Batteries
  • 50 Wh capacity supports longer unplugged sessions
  • 4335 mAh rating delivers reliable daily power
  • 55 V output matches original laptop spec
  • Li-polymer chemistry keeps weight low
  • Replaces C31N1831 for Asus P574FA and P3540FA series

50 Wh lithium-polymer battery for Asus laptops

This 50 Wh replacement battery uses lithium-polymer chemistry at 11.55 V and 4335 mAh. It fits Asus models P574FA, P3540FA, P3548FA, PE574FA and PX574FA. Buyers who need a different voltage or capacity cannot use this part.

Direct swap installation with part-number match

The unit replaces part number C31N1831 and fits the listed models without soldering or adapter cables. Misidentifying the exact model suffix is the most common reason a unit will not seat or charge.

50 Wh capacity decides runtime

Capacity of 50 Wh at 11.55 V determines how long the laptop runs on battery power. If the original specification calls for a different watt-hour rating this battery will not meet the requirement.

Highlights

  • 50 Wh capacity supports longer unplugged sessions
  • 4335 mAh rating delivers reliable daily power
  • 55 V output matches original laptop spec
  • Li-polymer chemistry keeps weight low
  • Replaces C31N1831 for Asus P574FA and P3540FA series

Specifications

TypeBattery
Battery TypeLaptop Batteries

Questions about this item

How can I verify the battery is charging correctly after installation?

The system should report 11.55V and a full charge near 4335mAh in the OS battery utility.

What is included in the package and do I need any extra parts?

Only the Li-polymer battery is supplied; no tools, screws or cables are included.

Which replacement part number matches my Asus laptop model?

Use part C31N1831 for P574FA, P3540FA, P3548FA, PE574FA or PX574FA.

Also in this aisle

People compared these

Same shelf, same checkout — eight coins and a 30-minute rate lock.