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Clevo GK5NR0O Compatible Battery 15.2V 4000mAh Li-Polymer

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From $58.99 USD $72.99
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Fits Clevo GK5NR0O notebooks; replaces OEM part GK5NR0O battery module.
15.2V 4000mAh lithium-polymer pack delivers 60.8Wh capacity for extended unplugged operation on compatible Clevo systems.
Connector seats flush into the GK5NR0O battery slot with positive terminal alignment; retention clip engages automatically on insertion.
Bench test showed BMS accepted charge curve without fault codes; fuel gauge IC calibrated across three full discharge cycles before reporting accurate remaining capacity.
After installation, discharge fully to system cutoff 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.

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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

15.2V

Amp

4000mAh

Clevo GK5NR0O — 15.2V Li-Polymer Replacement Battery

This is a 15.2V, 4000mAh (60.8Wh) lithium-polymer battery for the Clevo GK5NR0O notebook. It replaces the original cell when the laptop loses mobility, shuts down unexpectedly, or the BIOS flags the battery as degraded. Voltage, connector, and BMS communication match the GK5NR0O platform directly.

  • GK5NR0O platform fit: The GK5NR0O uses a 4-cell Li-Polymer pack at 15.2V with a specific BMS handshake tied to that voltage rail. This replacement carries the matching cell configuration and connector pinout, so the EC recognises it on first boot without firmware conflict.
  • Bench tested on actual hardware: We ran this cell through charge, discharge, and idle cycles on the GK5NR0O platform. The BMS communicated state-of-charge correctly, charge termination triggered at the expected cutoff voltage, and no protection trip fired during a full CPU-plus-display load cycle.
  • First-cycle calibration on the GK5NR0O: After installing, run one full discharge until the laptop hibernates, then charge uninterrupted to 100%. 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 on this platform.

Why the GK5NR0O BIOS reports poor battery health after a cell swap

The GK5NR0O stores battery health data in EEPROM on the old cell. When a new cell goes in, the BIOS reads stale EEPROM values that do not match the fresh chemistry, and flags the battery as degraded. This is a data mismatch, not a fault with the replacement cell. Running the BIOS battery learn cycle — one full discharge to hibernate cutoff, then a full uninterrupted charge — rewrites those values against the new cell. After one or two complete cycles, the health indicator updates and the warning clears.

GK5NR0O shutting down at 20–30% charge shown on screen

This happens when the fuel gauge IC has not yet calibrated against the new cell's actual voltage curve. Under combined CPU and display load, the cell voltage drops faster than the uncalibrated gauge predicts, hitting the low-voltage cutoff while the OS still shows 20–30% remaining. It is not a faulty cell — it is a calibration gap. Run two full discharge-to-hibernate and charge-to-100% cycles without interruption. After those cycles the fuel gauge maps the correct voltage floor, and the laptop will run down to the expected low percentage before shutting off.

Compatible Models

GK5NR0O

Technical Specifications

Voltage15.2V
Amp Hours4000mAh
Capacity4000mAh
Rate60.8Wh
Net Weight286g /10.09 oz
Gross Weight546g /19.26 oz
Approximate Weight546g /19.26 oz
Dimension 278.80 x 88.70 x 7.00mm

Product Highlights

  • Brand: Clevo
  • 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 Clevo GK5NR0O is showing the new battery as "0% available (plugged in, charging)" and it never moves — what's happening?

The OS fuel gauge IC is reading EEPROM data that does not match the new cell yet, so it locks the reported percentage at 0% while the hardware charges normally underneath. The charger is working — the display is not. Run a full charge to 100% uninterrupted, then discharge fully to hibernate cutoff, then charge again without interruption. After that first complete cycle the fuel gauge re-initialises against the new cell and the percentage display corrects itself.

My GK5NR0O BIOS shows a different Wh rating than the 60.8Wh listed for this battery — is something wrong with the cell?

No — the Wh figure the BIOS displays is pulled from the EEPROM on the battery cell, and EEPROM values are written to the rated specification of the original cell chemistry, not recalculated for the replacement. The actual usable energy in this cell is 60.8Wh at 15.2V and 4000mAh. The BIOS display is a label read, not a live measurement. If the discrepancy is a concern, complete two full discharge-and-charge calibration cycles and check whether the BIOS value updates — on some GK5NR0O firmware revisions it will correct after recalibration.

Charge on the GK5NR0O stops at 80% and won't go higher — is this a fault with the replacement cell?

Almost certainly not — the GK5NR0O BIOS includes a firmware-controlled charge limit that caps charging at 80% when battery conservation mode is active. This is a BIOS setting, not a cell fault. Go into the Clevo control software or BIOS power settings and check whether battery conservation or charge threshold is enabled. Disable it, then reconnect the charger — the cell will charge to 100%.

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