Fancy Buying A31N1519 Laptop Battery for ASUS X540

Fancy Buying A31N1519 is a direct replacement lithium-ion battery engineered to restore reliable power to compatible ASUS X540-series laptops.

If your ASUS X540, X540S, X540SA, X540L, X540LA, X540SC, X540YA or R540-series laptop is losing runtime or won't hold a charge, this Fancy Buying A31N1519 (3ICR19/66) battery offers a plug-and-play swap with certified safety features. The pack delivers 11.1V at 2200mAh (24Wh) across three cells and meets CE, FCC and RoHS criteria. Each unit is tested for correct voltage, circuit protection, steady current output and low self-discharge, and is designed for roughly 500 recharge cycles under normal use.

Will this battery fit my ASUS X540 laptop model?

Compatibility covers a broad set of X540 and R540 model numbers. Match the part number A31N1519 (also referenced as 3ICR19/66) with your laptop’s existing battery label to confirm fitment before ordering. If your current battery shows the same part ID, this Fancy Buying replacement is intended as a direct substitute.

• Compatible models include X540, X540S, X540SA, X540L, X540LA, X540LJ, X540SC, X540YA, R540L, R540SA and related series.
• Part number to verify: A31N1519 / 3ICR19/66.
• Three-cell pack sized for the corresponding ASUS battery bay and connector.

How long will the A31N1519 battery last during typical use?

Run-time depends on your laptop’s configuration and workload, but this replacement battery restores the original class of performance for everyday tasks like web browsing, document editing and video playback. The pack is rated for about 500 full recharge cycles, after which capacity gradually reduces as with all lithium-ion cells.

• Nominal capacity: 2200mAh (24Wh) at 11.1V.
• Expected lifecycle: ~500 recharge cycles before notable capacity decline.
• Actual runtime varies by screen brightness, apps, and power settings.

What safety and quality checks are performed on this replacement battery?

Fancy Buying units undergo multiple electrical and safety inspections to ensure stable performance and compatibility. The battery includes circuit protection to reduce risks from overcurrent, overcharge and short circuits, and is manufactured to meet CE, FCC and RoHS requirements where applicable.

• Tested for correct voltage and stable current output.
• Low self-discharge characteristics for longer shelf life.
• Compliance marks: CE, FCC and RoHS certified components.

How do I install the replacement battery safely?

Install by powering down the laptop, removing the back cover and swapping the old pack for the new one, aligning the connector carefully. Use basic tools and ground yourself to avoid static damage; keep screws organized and consult your laptop’s service manual if needed.

• Power down and unplug the adapter before starting.
• Disconnect the existing battery connector gently—do not force it.
• Reassemble and perform a full charge cycle before regular use.

Who this is for: This Fancy Buying A31N1519 battery is designed for ASUS owners who want an affordable, factory-style replacement to restore mobility and daily runtime. It's suitable for students, remote workers, technicians replacing old packs, and anyone needing a tested, compatible battery for X540 or R540 family notebooks. Ensure your laptop’s battery part number matches A31N1519 / 3ICR19/66 before purchase to guarantee fit and connector compatibility.