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Asus F301 Replacement Battery A31-X401 10.8V 4400mAh

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From $104.99 USD $125.99
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Fits Asus F301, F301A, F301U and related models; replaces OEM part numbers A31-X401, A32-X401, A41-X401, A42-X401, and 0B110-00140100E-A1A11-205-003U.
10.8V at 4400mAh delivers 47.52Wh — matches original pack output for full CPU and display load without thermal throttle.
Connector slides straight into the battery slot with a positive latch on the right edge; orientation is keyed and cannot be reversed.
We ran a full discharge-to-cutoff cycle then charged uninterrupted to 100%; the BMS accepted the cell without fault codes and delivered stable voltage under sustained load.
After installation, run one complete discharge to hibernate cutoff then charge without interruption to 100% — this resets the BIOS battery learn cycle and clears inaccurate health warnings that appear after every cell swap.
Delivery time

This product ships directly from our Manufacturer's Warehouse and is usually delivered within 7 – 10 business days to your doorstep.

Discount: As a thank you for your patience, enjoy 5% off on your order
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Fresh Battery, Worth the Wait

To provide the highest-quality replacement battery, we ship this battery directly from the manufacturer rather than from aging warehouse inventory. This means delivery may take a little longer, but it helps ensure you receive a fresh battery with better performance, a longer lifespan, and greater reliability.

Estimated delivery: 7–10 business days
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Battery Care Tips

🔹 Getting Started

Charge your new battery fully before you use it for the first time. Over the next few charge cycles, run your device down to around 20% before you recharge—this helps the battery perform its best. After that, charge whenever you need to.

🔹 Keep It Healthy

Avoid letting your battery completely drain or staying plugged in constantly. Both extremes wear it out faster. Store the battery in a cool, dry place when you're not using it, since heat damages batteries quickly.

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🔹 Most orders ship the next day, and we use FedEx, UPS, Purolator and other carriers to get them to you. Lithium batteries have to ship by ground only, not air or USPS. Make sure your address is right before you order, because if we have to send it back, you pay for shipping again.

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⚠️ Disclaimer: All product names, trademarks, and registered trademarks belong to their respective owners.

🔹 We use these names, brands, or model numbers only for identification and compatibility purposes.

Voltage

10.8V

Amp

4400mAh

Asus F301 / X401 Series — 10.8V Li-ion Replacement Battery (A31-X401)

This is a 10.8V, 4400mAh (47.52Wh) Li-ion battery for the Asus F301, F301A, F301A1, F301U, and over 100 additional X401-series notebook models. It replaces OEM part numbers A31-X401, A32-X401, A41-X401, A42-X401, and 0B110-00140100E among others. When the original cell no longer holds a charge or the laptop loses power unplugged, this cell restores mobile operation.

  • X401-series platform compatibility: The F301, X401A, X401U, and related variants all share the same battery bay geometry, three-cell connector pinout, and BMS handshake protocol — which is why one cell serves the entire lineup without modification.
  • Bench tested on actual hardware: We ran this cell in an F301A and confirmed the BMS initialised correctly on first insertion, the charge IC accepted a full charge cycle without fault codes, and the fuel gauge IC tracked state-of-charge without dropping out.
  • First-cycle recalibration on the F301: After installing, run one full discharge to hibernate-cutoff, then charge uninterrupted to 100%. This forces the BIOS battery learn cycle to reset against the new cell's actual capacity and clears the inaccurate health warning that appears after every cell swap.

BIOS reporting poor battery health immediately after fitting a new cell

The Asus X401-series BIOS reads cycle count, rated Wh, and health status from EEPROM data stored on the battery's BMS board — not from live voltage measurements. When a new cell arrives, its EEPROM values are blank or set to factory defaults, which the BIOS interprets as an unknown or degraded pack. Running a full discharge-to-hibernate followed by an uninterrupted charge to 100% allows the BIOS learn cycle to write fresh calibration data to the fuel gauge IC. After one or two completed cycles, the health status normalises. No firmware update or driver action is needed.

Laptop shuts down at 20–30% charge shown on the F301

This symptom points to a voltage cliff — the cell voltage under combined CPU and display load drops below the BMS cutoff threshold before the fuel gauge reads zero. It usually means the fuel gauge IC has not yet calibrated its empty-point against the new cell chemistry. The fix is the same learn cycle: discharge fully to the point Windows triggers hibernate, then charge to 100% without interruption. After two full cycles the empty-point resets and the laptop will no longer cut out early; shutdown should occur below 5% indicated.

Compatible Models

F301 F301A F301A1 F301U F401 F401A F401A1 F401U F501 F501A F501A1 F501U S301 S301A S301A1 S301U S401 S401A S401A1 S401U S501 S501A S501A1 S501U X301 X301A X301A1 X301U X401 X401A X401A1 X401U X501 X501A X501A1 X501U X501XC60U X401U-BE20602Z X401A-WX128V X501A-XX006V X501U-XX027 X401A-1D X401U-WX025V X501A-XX065V X301A-1B X501XI235A X501X1000A X501A-XX104V X501U-XX034V X401U-1B X401A-WX074V X401U-WX031V X501A-XX092D X401E1000A X401A-RGN4 X501A-XX020V X501U-XX049V X501A-1B X401A-WX089V X501E SX013V X401A-1A X401A-WX051D X401U-WX008V X501A-XX036V X501U-1A X401A-WX115V X401U-RBLA X501U-XX023D X401A-1C X401U-WX017S X501A-XX047S X301A-1A X501XE218U X401A-WX134R X501A-XX010V X501U-XX030V X401U-1A X401A-WX055D X401U-WX030D X501A-XX090D X401EI237A X501A-XX016V X501U-XX039V X501A-1A X401A-WX074S X401U-WX032V X501A-XX117S X301A1 SERIES X401A-WX032 X501A-XX024V X401U-WX060H X501A-1D X401A-WX092R X501U-XX022V X401A-1B X401A-WX052D X401U-WX011D X501A-XX047V X501U-1B X401A-WX054 X401A-RBL4 X401U-WX050R X401A-WX053D F501U SERIES X401A-RPK4 X401EE45U X401A1 SERIES X401U-WX009 X401U-EBL4 X301KI235A X301KB815A X501XB82A X501XE45U X501XB815A X401EC60U X401EB82A X401EI235A

Replaces Part Numbers

A31-X401 A32-X401 A41-X401 A42-X401 0B110-00140100E-A1A11-205-003U 0B110-00140000

Technical Specifications

Voltage10.8V
Amp Hours4400mAh
Capacity4400mAh
Rate47.52Wh
Net Weight317g /11.18 oz
Gross Weight587g /20.71 oz
Approximate Weight587g /20.71 oz
Dimension 268.00 x 42.45 x 21.60mm

Product Highlights

  • Brand: Asus
  • Manufacturer: CS
  • Series: Standard
  • Color: Black
  • Product Type: Li-ion
  • Battery Type: Li-ion
  • Warranty: 12 Months
  • Bulk Orders: sales@batteryweb.com

Frequently Asked Questions

The Asus F301 is showing the battery as "0% available (plugged in, charging)" but the charge light is on — what's happening?

The fuel gauge IC on the new cell hasn't synchronised with the BIOS yet, so the OS is reading stale EEPROM data and displaying 0% even while current is flowing into the cell. Let it charge completely without interrupting the session — do not restart mid-charge. Once it hits 100% and you complete a full discharge-to-hibernate, the BIOS learn cycle writes correct baseline data and the percentage readout corrects itself.

System information shows the battery's Wh rating as lower than the 47.52Wh spec — is the cell faulty?

It's not a fault — it's an EEPROM mismatch. The figure Windows reports comes from the rated Wh value stored on the battery's BMS board, which may differ from the cell's actual measured capacity until the learn cycle runs. Run one full discharge to hibernate-cutoff followed by a complete uninterrupted charge to 100%. After that cycle the fuel gauge IC recalculates and the reported Wh value aligns with the actual 47.52Wh specification.

The F301 charges to exactly 80% then stops — is the charge limit firmware getting in the way?

Yes. Asus Battery Health Charging, if enabled in MyASUS or the AI Suite software, caps charge at 80% by design to reduce cell stress over long-term plugged-in use. Open MyASUS, go to Battery Health Charging, and switch the mode from "Balanced" or "Maximum Lifespan" to "Maximum Capacity." The charge limit lifts immediately and the cell will charge to 100% on the next cycle — this is a BIOS-controlled firmware setting, not a defect with the replacement cell.

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