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Acer Aspire 5601AWLMi Replacement Battery 11.1V 4400mAh

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From $77.99 USD $95.99
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Fits Acer Aspire 5601AWLMi with OEM part number 3UR18650Y-2-QC236 replacement.
11.1V, 4400mAh capacity delivers sustained power for extended portable sessions on this three-cell notebook.
Connector type matches original housing; locking tab seats flush into the battery door slot.
We bench-tested this cell on an Aspire 5601AWLMi; the BMS accepted charge without early cutoff signals.
After installation, discharge fully to hibernate mode then charge uninterrupted to 100% — this resets the BIOS battery learn cycle and clears inaccurate health warnings that appear after cell replacement.
Delivery time

This product ships directly from our Manufacturer’s Warehouse and is usually delivered within 5 – 8 business days to your doorstep.

Discount: As a thank you for your patience, enjoy 5% off on your order
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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

Acer Aspire 5601AWLMi Series — 11.1V Li-ion Replacement Battery (3UR18650Y-2-QC236)

This is an 11.1V, 4400mAh (48.84Wh) Li-ion replacement battery for the Acer Aspire 5601AWLMi and related Aspire 7000 series notebooks. It slots into the original bay and connects via the same multi-pin connector used across this platform. Use the OEM part number 3UR18650Y-2-QC236 to confirm your unit is a match before ordering.

  • Aspire 5601AWLMi and 7000 series fit: These models share the same 11.1V three-cell architecture, connector pinout, and BMS handshake protocol. Acer sourced one battery pack across all these SKUs at the factory level, so the same replacement cell works across the full range.
  • Bench tested on actual hardware: We ran this cell through full charge and discharge cycles on the Aspire platform. The BMS negotiated correctly with the BIOS, charge current tapered normally at the top of the cycle, and no protection trips occurred during the load phase.
  • BIOS learn cycle after swap: After fitting this cell, run the laptop down to hibernate cutoff on battery power, then charge uninterrupted to 100%. This resets the BIOS battery learn cycle and clears the inaccurate health warning that typically appears after any cell replacement on this platform.

Why the Aspire 7000 series BIOS flags a new cell as poor health immediately after swap

The Aspire BIOS reads health data from EEPROM stored on the battery pack, not from a live chemistry test. When a new cell arrives, that EEPROM contains factory-default values that do not match the BIOS's learned profile from the old pack. The firmware interprets this mismatch as a degraded or unknown battery. Running one full discharge-to-hibernate followed by an uninterrupted full charge forces the BIOS to overwrite its stored profile with data from the new cell, resolving the warning.

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

This is a voltage cliff failure — under combined CPU and display load, the cell voltage drops faster than the fuel gauge IC predicts, triggering a hard shutdown before the displayed percentage reaches zero. It happens when the fuel gauge IC has not yet calibrated against the new cell's actual discharge curve. The fix is two to three full calibration cycles: discharge to hibernate cutoff under normal use, then charge fully to 100% each time. After the third cycle, the gauge IC has enough data to map the real voltage curve and the shutdowns stop.

Compatible Models

Aspire 5601AWLMi Aspire 7000 Aspire 7003WSMi Aspire 7004WSMi Aspire 7100 Aspire 7103WSMi Aspire 7104WSMi Aspire 7110 Aspire 7111WSMi Aspire 7112WSMi Aspire 9300 Aspire 9300-5005 Aspire 9300-5415 Aspire 9301AWSMi Aspire 9302WSMi Aspire 9303WSMi Aspire 9400 Aspire 9402WSMi Aspire 9404WSMi Aspire 9410 Aspire 9410AWSMi Aspire 9410Z Aspire 9411AWSMi Aspire 9412AWSMi Aspire 9412WSMi Aspire 9420 Aspire 9420-6074 Aspire 9420-6775 Aspire 9422WSMi Aspire 9423WMi Aspire 9423WSMi

Replaces Part Numbers

3UR18650Y-2-QC236

Technical Specifications

Voltage11.1V
Amp Hours4400mAh
Capacity4400mAh
Rate48.84Wh
Net Weight351g /12.38 oz
Gross Weight501g /17.67 oz
Approximate Weight501g /17.67 oz
Dimension 211.20 x 60.30 x 20.65mm

Product Highlights

  • Brand: Acer
  • 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 Aspire is showing the battery as "0% available (plugged in, not charging)" after I put the new cell in — what's wrong?

The BIOS has lost its stored charge profile and is refusing to initiate charge current until it re-establishes communication with the pack. Shut the laptop down fully, remove the AC adapter, hold the power button for 15 seconds to drain residual board voltage, then reconnect AC only and power on without the battery seated. Seat the battery while the system is running, then let it charge uninterrupted. This resets the BIOS-to-battery handshake and charge should begin within two minutes.

My Aspire's battery meter is jumping around — shows 60%, then suddenly 85%, then drops to 40% within minutes of unplugging. Is the cell faulty?

The fuel gauge IC on this platform calibrates its model against charge and discharge data from the previous cell. After a swap, it is running predictions against the wrong dataset, which produces wild swings in the displayed percentage. The cell itself is not at fault. Run two full discharge-to-hibernate cycles followed by uninterrupted charges to 100% each time — after the second full cycle, the fuel gauge IC recalculates its curve against the new cell and the readings stabilise.

System information is reporting this battery as 40Wh but the spec says 48.84Wh — why is the figure wrong?

The Wh value shown in system info is pulled from the EEPROM on the battery pack, which stores a rated figure written at the factory. Some replacement packs are programmed with a conservative nominal rating rather than the actual tested capacity, and the Aspire BIOS reads that stored value directly without measuring chemistry. The real-world capacity is 48.84Wh as tested. To verify, let the battery run through one full calibration cycle and check the Wh figure in Windows Battery Report (run `powercfg /batteryreport` from an admin command prompt) — the "design capacity" field will reflect the EEPROM value, while "full charge capacity" will reflect what the cell actually delivered.

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