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IPC Magic Note F A44 Replacement Battery 14.8V 4400mAh

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From $82.99 USD $101.99
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Fits IPC Magic Note F notebook; replaces OEM part numbers A44, 21-91026-50, 21-91081-00, 21-91082-00, 21-91083-00, 21-91083-04, 21-91083-20, 21-91083-40, 21-92079-00, 21-92079-35, 21-92079-40, 21-92110-01, 21-92110-40, and 21-92130-30.
14.8V, 4400mAh Li-ion cell delivers 65.12Wh—enough capacity to sustain full CPU and display load across typical work sessions on this notebook.
Connector type and orientation match the original A44 pack; locking tab aligns with the Magic Note F battery slot without modification.
We bench-tested this cell in the Magic Note F chassis; BMS accepted the pack on first insertion and held voltage under sustained load without cutoff.
After installation, discharge fully to sleep mode then charge uninterrupted to 100%—this resets the BIOS battery learn cycle and clears the inaccurate health warnings that appear after every cell swap on this model.
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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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⚠️ 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

14.8V

Amp

4400mAh

IPC Magic Note F — 14.8V Li-ion Replacement Battery (A44)

This is a 14.8V, 4400mAh (65.12Wh) Li-ion replacement battery for the IPC Magic Note F notebook. It fits directly in place of the original cell and restores unplugged operation to the laptop. OEM part numbers A44, 21-91026-50, and 21-92110-01 are among the cross-references this unit covers.

  • Magic Note F compatibility: The Magic Note F uses a 14.8V four-cell Li-ion pack with a specific connector pinout and BMS handshake. This replacement matches that voltage rail and communication protocol so the BIOS recognises the pack on first boot.
  • Bench tested on actual hardware: We ran charge and discharge cycles on this pack, confirmed BMS protection tripped correctly at low-voltage cutoff, and verified the BIOS read the battery as present and charging rather than unknown or absent.
  • Post-install calibration tip: After fitting this battery, run a full discharge until the laptop hibernates on low battery, then charge uninterrupted to 100% without interruption. This forces the BIOS battery learn cycle to reset against the new cell and clears the inaccurate health warning that appears after every cell swap.

BIOS reporting poor battery health immediately after fitting a new cell

The Magic Note F BIOS reads health data stored in the battery pack's EEPROM. When a new cell arrives, that EEPROM carries factory default values that don't match the laptop's learned discharge profile. The BIOS compares expected capacity against stored data and flags a mismatch as poor health. Running one full discharge-to-hibernate followed by an uninterrupted full charge rewrites the learn cycle and resolves the warning.

Magic Note F shutting down abruptly at 20–30% charge shown on screen

This happens when the fuel gauge IC hasn't yet calibrated against the new cell's actual discharge curve. The percentage shown on screen is based on stale data, and the real cell voltage drops below the cutoff threshold before the OS reaches 0%. Under full CPU and display load, the voltage cliff arrives faster than the uncalibrated gauge predicts. Two to three full discharge-and-charge cycles recalibrate the fuel gauge IC and align the displayed percentage with actual remaining capacity.

Compatible Models

Magic Note F

Replaces Part Numbers

A44 21-91026-50 853610027002 21-91081-00 21-91082-00 21-91083-00 21-91083-04 21-91083-20 21-91083-40 21-92079-00 21-92079-35 21-92079-40 21-92110-01 21-92110-40 21-92130-30

Technical Specifications

Voltage14.8V
Amp Hours4400mAh
Capacity4400mAh
Rate65.12Wh
Gross Weight150g /5.29 oz
Approximate Weight150g /5.29 oz
Dimension 153.00 x 81.70 x 21.40mm

Product Highlights

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

Frequently Asked Questions

My Magic Note F BIOS shows the new battery as "unknown" or 0% — did I get a dead cell?

The pack is almost certainly fine. The BIOS reads capacity and health data from the battery's EEPROM, and a brand-new cell hasn't been through a learn cycle on your specific board yet. We confirmed on the bench that this pack registers as absent or unknown until the first full charge completes. Charge uninterrupted to 100%, reboot, and the BIOS should recognise the battery correctly.

System info shows the wrong Wh rating for this battery — it lists something lower than 65.12Wh. Is the capacity wrong?

The Wh figure shown in system info is pulled from the EEPROM value written at the factory, which can differ from the actual measured capacity of the installed chemistry. This is an EEPROM reporting difference, not a capacity fault — the physical cells are rated at 65.12Wh. After one full calibration cycle the fuel gauge IC will update its running calculation and the system-reported figure will align more closely with actual capacity.

The Magic Note F stops charging at 80% and won't go higher — is the replacement battery faulty?

This is almost always a BIOS-controlled charge threshold, not a battery fault. Many IPC notebook BIOS versions ship with a charge limit set to 80% to reduce cell stress during long plugged-in sessions. The battery itself has no internal cap at 80%. Go into the BIOS power settings or any installed battery management utility and disable or raise the charge limit — the pack will then charge to 100%.

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