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A32-K72 Asus A72 Replacement Battery 11.1V 4400mAh

Up to 19% off
New arrival
From $67.99 USD $82.99
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Fits Asus A72, A72D, A72DR, A72F and 75+ models; replaces A32-K72, A32-N71, 70-NX01B1000Z OEM pack.
11.1V at 4400mAh delivers 48.84Wh — matches original capacity for full portable session between charges.
Connector slides straight into the battery bay slot; locking tab secures flush against the chassis frame.
We bench-cycled this cell against an A72D motherboard; BMS negotiated handshake cleanly and held voltage under sustained load.
After installation, discharge fully to system hibernation cutoff, then charge uninterrupted to 100% — this resets the BIOS battery learn cycle and clears the inaccurate health warning that appears 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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By continuing with your purchase, you acknowledge and agree to the estimated 7–10 business day delivery timeframe.
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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.

Disclaimer

⚠️ 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

4400mAh

Asus A72 Series — 11.1V Li-ion Replacement Battery (A32-K72)

This is an 11.1V, 4400mAh (48.84Wh) Li-ion battery for the Asus A72 notebook series, including the A72D, A72DR, and A72F. It fits the original A32-K72 slot and connector without modification. OEM part numbers A32-N71, 70-NX01B1000Z, 70-NXH1B1000Z, 70-NZY1B1000Z, and 70-NZYB1000Z all cross-reference to this cell.

  • A72 platform fit: The A72 series shares a common battery bay geometry and three-pin SMBus connector across its variants. The BMS communicates charge state and temperature data directly to the Asus EC chip — the physical and electrical interface is identical across A72D, A72DR, and A72F boards.
  • Bench tested on actual hardware: We ran this cell through charge and discharge cycles on the A72 platform. The BMS handshake completed without error, the EC recognised the battery immediately, and charge current tapered correctly at the top of the cycle — no runaway charge events or cutoff faults.
  • First-cycle conditioning on the A72: After fitting this cell, run the laptop on battery until it hits hibernate cutoff — do not plug in early. Then charge uninterrupted to 100%. This forces the Asus EC to complete a full battery learn cycle and clears the inaccurate health warning that appears in BIOS after any cell swap.

BIOS reporting poor battery health immediately after fitting a new cell

The Asus A72 EC reads EEPROM data stored on the previous cell and compares it against incoming charge cycles. A new cell has no usage history, so the EC flags it as degraded by default. This is a firmware behaviour, not a fault with the replacement. Running one complete discharge-to-hibernate followed by an uninterrupted full charge resets the learn cycle and updates the health register. After two to three full cycles the BIOS health indicator returns to normal.

Laptop shuts down abruptly while the OS gauge still shows 20–25% charge

This happens when the fuel gauge IC has not yet calibrated against the new cell's actual voltage curve. The IC is still using the discharge profile from the old, degraded cell — so the percentage readout and the real cell voltage fall out of sync. Under full CPU and display load the cell voltage drops sharply past the BMS cutoff threshold before the gauge reaches zero. Run two full discharge-to-hibernate cycles without interruption and the fuel gauge IC will re-map its curve to the new cell, closing the gap between reported and actual charge state.

Compatible Models

A72 A72D A72DR A72F A72J A72JK A72JR K72 K72D K72DR K72DY K72F K72J K72JA K72JB K72JC K72JE K72JF K72JH K72JK K72JL K72JM K72JO K72JQ K72JR K72JT K72JU K72JV K72JW K72K K72L K72N K72P K72Q K72R K72S K72Y K73 K73E K73J K73JK K73S K73SV N71 N71J N71JA N71JQ N71JV N71V N71VG N71VN N71YI N73 N73F N73G N73J N73JF N73JG N73JN N73JQ N73Q N73S N73SD N73SL N73SN N73SQ N73SV N73SW N73V X77 X77J X77JA X77JG X77JO X77JQ X77JV X77V X77VG X77VN

Replaces Part Numbers

A32-K72 A32-N71 70-NX01B1000Z 70-NXH1B1000Z 70-NZY1B1000Z 70-NZYB1000Z

Technical Specifications

Voltage11.1V
Amp Hours4400mAh
Capacity4400mAh
Rate48.84Wh
Net Weight296.3g /10.45 oz
Gross Weight446.3g /15.74 oz
Approximate Weight446.3g /15.74 oz
Dimension 205.47 x 55.57 x 19.69mm

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

Windows shows the Asus A72 battery as "0% available (plugged in, not charging)" straight after fitting — what's happening?

The fuel gauge IC on the A72 mainboard still holds the discharge profile from the old cell. Until it sees at least one full cycle it cannot accurately read the new cell's state of charge, so Windows reports 0% or an unknown state. Unplug the adapter, let the laptop run on battery to hibernate cutoff, then plug in and charge uninterrupted to 100%. After that first complete cycle the gauge IC locks onto the new cell's curve and the percentage reads correctly.

System Information shows the wrong Wh rating — 48Wh installed but the OS reports a different figure — is the battery faulty?

The Wh figure the OS displays is pulled from EEPROM data written to the previous cell, not read directly from the new one. The A72 EC updates that register only after a completed learn cycle. Run the cell from full charge down to hibernate cutoff, then recharge to 100% without interruption. After the cycle completes, check System Information again — the reported Wh value should update to match the 48.84Wh rating of the replacement cell.

The A72 charges the new battery fine but BIOS still shows "Battery health: Poor" on every boot — how do I clear it?

The Asus EC stores health data tied to the old cell's cycle count and internal resistance measurements. A fresh cell with no history triggers the poor-health flag because there is no accumulated data for the EC to assess. This does not mean the cell is faulty. Complete two full discharge-to-hibernate cycles followed by uninterrupted charges to 100%, then enter BIOS setup and check the health field again — it should update to reflect the current cell state once the EC has enough cycle data to recalculate.

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