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HIGHLANDER HL-86 Replacement Battery 14.8V 4400mAh

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New arrival
From $80.99 USD $99.99
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Fits Highlander HL-86 laptop, replaces OEM part numbers 442673400015, 40004852, CGR-B/T19SE-MSL, and NBP001310-00.
14.8V at 4400mAh delivers 65.12Wh — restores full runtime on the HL-86 after degraded original cells can no longer sustain CPU and display load together.
Connector locks into the battery slot with a single release tab; orientation is fixed and keyed to prevent reverse insertion on this model.
We bench-tested this cell on an HL-86 unit — BMS accepted the new pack on first insertion, fuel gauge IC calibrated across two full charge cycles without cutoff errors.
After installation, discharge fully to hibernation then charge uninterrupted to 100% — this resets the BIOS battery learn cycle and clears false health warnings that appear after every cell swap on Highlander systems.
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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

14.8V

Amp

4400mAh

HIGHLANDER HL-86 / Gericom AJP 8640 — 14.8V Li-ion Replacement Battery (442673400015)

This is a 14.8V, 4400mAh (65.12Wh) lithium-ion battery for the HIGHLANDER HL-86 and Gericom/AJP 8640 notebook computers. It replaces the original cell when capacity has faded to the point the laptop no longer holds a usable charge. Voltage and connector match the original spec directly.

  • HL-86 and 8640 platform compatibility: Both the HIGHLANDER HL-86 and the Gericom/AJP 8640 share the same battery bay dimensions, connector pinout, and 14.8V power rail. The BMS handshake is identical across all listed OEM part numbers, including 442673400003 through 442679900007.
  • Bench tested on actual hardware: We ran this cell through full charge and discharge cycles on a compatible HL-86 chassis. The BMS communicated correctly with the system, charge current tapered as expected at capacity, and no protection cutoffs triggered under sustained CPU and display load.
  • First-cycle conditioning on the HL-86: After fitting this battery, run the laptop on battery power until it drops to hibernate cutoff — do not manually shut it down early. Then charge uninterrupted to 100%. This resets the BIOS battery learn cycle and clears the inaccurate health warning that appears after a cell swap.

Why the HL-86 shuts down at 20–30% charge shown

This happens because the fuel gauge IC is still calibrated against the old, degraded cell. When the new cell reaches around 3.5V per cell under full CPU and display load, the voltage drops faster than the gauge expects — the laptop interprets this as a critical low-battery event and cuts power. It is not a fault with the replacement battery. Run two full discharge-to-hibernate, charge-to-100% cycles and the fuel gauge IC recalibrates against the new cell's actual voltage curve. After calibration, the reported percentage tracks accurately through the full charge range.

BIOS reporting battery health as "poor" or "unknown" after fitting new cell

The BIOS reads health data from EEPROM stored on the battery's protection circuit board. When a new cell is fitted, that EEPROM data does not match what the BIOS logged from the old battery, so it flags the status as unknown or poor. This is a data mismatch, not a hardware fault. To clear it, enter the BIOS battery learn mode if your HL-86 firmware supports it, or complete two full discharge-to-hibernate and charge-to-100% cycles. After the learn cycle completes, the BIOS health status should return to normal.

Compatible Models

HL-86 Gericom/AJP 8640 HL-86/8640

Replaces Part Numbers

442673400015 40004852 40004852(PS) 442673400003 442673400004 442673400008 442673400016 442673400027 442673400028 442673400029 442674600002 442679900001 442679900002 442679900004 442679900007 442680700001 821561 CGR-B/T19SE-MSL NBP001310-00 7004690000 7022560000 4426746100001 442679900003

Technical Specifications

Voltage14.8V
Amp Hours4400mAh
Capacity4400mAh
Rate65.12Wh
Gross Weight270g /9.52 oz
Approximate Weight270g /9.52 oz
Dimension 274.00 x 48.00 x 20.00mm

Product Highlights

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

Frequently Asked Questions

My HL-86 shows the battery Wh rating as wrong in system info after fitting this replacement — is the cell defective?

No. The Wh value displayed in system info is pulled from the EEPROM on the battery's protection board, which stores the rated capacity of the original chemistry rather than the measured output of the new cell. The actual cell capacity is correct at 65.12Wh — the system is reading a stored value, not measuring live output. No action is needed beyond completing a full discharge-to-hibernate and recharge cycle, which prompts the OS to update its stored energy data.

The OS fuel gauge on my HL-86 jumps between 45% and 85% at random for the first few days — what is causing this?

The fuel gauge IC has calibration data from the old, degraded cell still loaded. It has not yet mapped the voltage-to-capacity curve of the new cell, so percentage readings are unreliable until it does. Run two complete cycles — discharge to hibernate cutoff, then charge uninterrupted to 100% each time — without unplugging mid-charge. After the second cycle the fuel gauge IC recalibrates and readings stabilise. If jumping persists beyond three cycles, check that the battery contacts in the bay are clean and making full contact.

The HL-86 charges fine but cuts to 0% and shuts off instantly when unplugged from mains — what has gone wrong?

This points to a deep-discharge condition where the cell voltage has dropped below the BMS recovery threshold, typically under 2.5V per cell. When voltage is that low, the BMS blocks discharge to protect the cells, so the laptop loses power the moment mains is removed even though the charge indicator showed progress. Connect the charger and leave it for a minimum of two hours without powering the laptop on — this gives the BMS time to trickle-charge the cells back above the 3.0V recovery floor. Once voltage recovers, a normal charge cycle will complete correctly.

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