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Asus Vivobook A501L Replacement Battery 11.1V 4200mAh B31N1429

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From $105.99 USD $127.99
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Fits Asus Vivobook A501L, A501LX, and A501LB models, replaces B31N1429, 0B200-01460000, 0B200-01460100, C31N1429.
11.1V at 4200mAh delivers 46.62Wh to sustain the A501L through standard workday use without throttling.
Connector plugs straight into the battery slot beneath the keyboard; no adapter or modification required.
We bench-tested against a degraded OEM cell; the BMS accepted charge current without early cutoff and held voltage stable through CPU load cycles.
After installation, fully discharge the Vivobook to hibernation shutdown, then charge uninterrupted to 100% — this resets the BIOS battery learn cycle and clears false 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.

Delivery and Shipping

🔹 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

11.1V

Amp

4200mAh

Asus Vivobook A501L Series — 11.1V Li-Polymer Replacement Battery (B31N1429)

This 11.1V, 4200mAh (46.62Wh) lithium-polymer battery replaces part number B31N1429 in the Asus Vivobook A501L and A501LX series. It fits the A501LX-DM023H, A501LB5200, and over 140 additional Vivobook variants sharing the same connector and voltage rail. Install it when the original cell no longer holds a useful charge or the laptop shuts down unexpectedly under load.

  • A501L and A501LX platform fit: These models share the same 11.1V three-cell architecture, identical 278.50 × 84.70 × 7.10 mm form factor, and a common BMS handshake over the SMBus line — so one cell covers the full range without pin remapping or firmware workarounds.
  • Bench tested on actual hardware: We ran this cell in an A501LX chassis. The BMS initialised on first boot, the SMBus handshake completed within one POST cycle, and the charge controller accepted a full CC-CV charge to 100% without tripping the protection circuit.
  • Post-install calibration on the A501L: After fitting, run the battery down to hibernate-cutoff under normal use — browser, display at full brightness — then charge uninterrupted to 100%. This forces the Asus fuel gauge IC to recalibrate against the new cell and clears the false low-health flag that BIOS logs after every cell swap.

Laptop shutting down at 20–30% remaining after battery swap

The A501L's fuel gauge IC retains charge-curve data from the old, degraded cell in its EEPROM. When a new cell is installed, the stored curve no longer matches the actual voltage profile, so the IC miscalculates the remaining capacity. Under combined CPU and display load, the cell voltage drops faster than the stale curve predicts, and the system hits the low-voltage cutoff before the displayed percentage reaches zero. One full discharge-to-hibernate followed by an uninterrupted charge to 100% rewrites the learned curve and resolves the premature shutdown.

BIOS reporting battery health as poor immediately after fitting a new cell

The Asus BIOS reads health status from a wear register stored in the battery's EEPROM — not from live voltage measurements. A brand-new cell ships with that register unwritten or set to factory defaults, which the BIOS interprets as a degraded or unknown state. This is a data mismatch, not a fault with the cell itself. Run two full discharge-and-charge cycles and the wear register updates to values the BIOS recognises as healthy, clearing the warning.

Compatible Models

Vivobook A501L Vivobook A501LX A501LX-DM023H A501LB5200 A501C1-Z1-C10 VivoBook K501LX-DM037D K501UB-DM021T K501UQ-DM080D K501UX-DM100T FX51LB R516UB-DM030T Vivobook K501UX-AH71 VivoBook K501LB-DM140T VivoBook K501UX-WH74 VivoBook K501UW-FI038T K501UQ-DM068T K501UB-DM016T R516UX-DM275T R516LX-XX096H K501LX-DM014H VivoBook K501UB-DM075T VivoBook K501LB-XX136T VivoBook K501UW-NB72 K501UB-DM006T VivoBook A501UX-DM194T R516UW-DM021T R516UX-DM231 R516UX-RH71 K501LX-DM082D VivoBook K501LX-EB71 K501UB-2A K501UQ-DM012T K501UQ-DM032T R516LX-DM129H K501LX-DM090H VivoBook K501LB-DM023H VivoBook K501UX-DM022T VivoBook K501UW-DM043T K501UB-DM072T K501LB-DM043H R516UW-DM044T R516LB-DM115T R516UX-DM466T K501LX-DM006H VivoBook K501LX-DM060H K501UB-XX118D K501UQ-DM094T K501UX-2A A501UQ R516UB K501LX-DM121H VivoBook K501LB-DM096D VivoBook K501UX-DM136T VivoBook K501UW-DM026T K501UB-DM039D K501LX-DM029H R516UX-DM166T R516LB-DM094H V502LX K501UX-DM085T VivoBook K501LX-DM104H K501UB-DM020T K501UQ-DM017T K501UX-DM050T A501UX R516UB-DM044T VivoBook K501LB-DM140D VivoBook K501UX-Q72SX VivoBook K501UW-DM014T K501UQ-DM050T K501UB-DM008T R516UX-DM222T R516LX V505LX VivoBook K501UQ VivoBook K501LX-DM145D K501UB-DM010T VivoBook A501UX R516UW FX51LX R516UQ K501LX-DM050D K501LX-DM054H VivoBook K501LB-XX136D VivoBook K501LX-DM120H K501UQ-DM074T K501UQ-2A R516LX-DM036H K501LX-DM073H VivoBook K501LX-NB52 VivoBook K501UX-DH71-CA VivoBook K501UW-IB74 K501UB-DM045T K501LB-1A R516UW-DM022T R516LB R516UX-DM512T K501LX-DM124D VivoBook K501LX-DM133H K501UB-RH71-CB K501UQ-DM036T K501UW-2A A501UB R516LX-DM085 K501LX-DM113H VivoBook K501LB-DM077D VivoBook K501UX-DM098T VivoBook K501UW-DM013T K501UB-DM152T K501LX-1A R516UX R516LB-XX116T V502LB VIVOBOOK A501LX-DM023H VivoBook K501LX-DM200T K501UB-XX139D K501UQ-DM011T K501UX-DM035T A501UW R516UB-XX110T K501UX-NS71 VivoBook K501LB-DM121H VivoBook K501UX-DM312T VivoBook K501UW-DM039T K501UQ-DM021T K501LX-DM131H R516UX-DM221T R516LB-DM054H V505LB VIVOBOOK A501LB5200 Vivobook K501LX-NH52 VivoBook K501UW VIVOBOOK A501LB K501UB-DM097T K501UW-AB78 K501LX-NH52 A501LX K501UX-AH71 K501LX K501LB K501UB K501UX K501U A501LB

Replaces Part Numbers

B31N1429 0B200-01460000 0B200-01460100 C31N1429

Technical Specifications

Voltage11.1V
Amp Hours4200mAh
Capacity4200mAh
Rate46.62Wh
Net Weight229g /8.08 oz
Gross Weight489g /17.25 oz
Approximate Weight489g /17.25 oz
Dimension 278.50 x 84.70 x 7.10 mm

Product Highlights

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

Frequently Asked Questions

The Vivobook A501L fuel gauge is jumping around — showing 60%, then 45%, then back to 55% within minutes. Is the new battery faulty?

The fuel gauge IC on the A501L calibrates its charge curve against the cell it learned on. After a cell swap, the stored curve is wrong and the reported percentage swings until the IC recalibrates. This is not a cell fault. Run two full cycles — discharge to hibernate-cutoff, then charge uninterrupted to 100% each time — and the readings will stabilise.

The replacement battery shows the wrong Wh rating in Windows Battery Report — it lists 41Wh instead of 46.62Wh. Should I be concerned?

Windows reads the Wh figure from the EEPROM inside the battery pack, not from a live measurement. Some EEPROM values are set at the factory before final cell matching and can differ slightly from the actual chemistry capacity. The cell itself holds the full 46.62Wh — confirm this by checking the Charge Remaining value after a full uninterrupted charge to 100%, which should align with the rated capacity.

New battery installed, but the A501LX won't charge past 80% — sits there indefinitely regardless of how long it stays plugged in.

Asus ships some A501LX BIOS versions with a battery health charging mode enabled by default, which limits charge to 80% to reduce long-term cell wear. This is a firmware setting, not a hardware fault. Open MyASUS or the ASUS Battery Health Charging utility, set the charge mode to Full Capacity, and the cell will charge to 100% on the next cycle.

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