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AA-PBTN6QB Samsung NP900X5N-K07HK Compatible Battery 11.5V 5700mAh

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From $98.99 USD $121.99
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Fits Samsung Series 9 NP900X5N-K07HK ultrabook; replaces OEM part AA-PBTN6QB.
11.5V, 5700mAh lithium-polymer cell delivers 65.55Wh to sustain this ultrabook through a full workday.
Connector slides into the internal battery slot with a single locking tab; no tools required.
We bench-tested this cell on a Series 9 platform; BMS accepted the new pack on first charge without fault codes.
After installation, run one full discharge to hibernation cutoff then charge uninterrupted to 100% — this resets the BIOS battery learn cycle and clears inaccurate health warnings that appear after every cell swap.
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

11.5V

Amp

5700mAh

Samsung NP900X5N Series — 11.5V Li-Polymer Replacement Battery (AA-PBTN6QB)

This is an 11.5V, 5700mAh (65.55Wh) Li-Polymer replacement battery for the Samsung Series 9 NP900X5N ultrabook. It fits the NP900X5N-K07HK, NT900X5N-K29S, NT900X5N-K59W, NT900X5N-L38W, and 72 additional NP900X5N variants. It replaces the OEM AA-PBTN6QB cell when the original can no longer hold a usable charge.

  • NP900X5N series compatibility: All NP900X5N variants share the same battery bay, connector pinout, and BMS handshake protocol. The 11.5V three-cell Li-Polymer configuration matches the voltage rail the Series 9 mainboard expects. A mismatched voltage would prevent the BMS from completing the authentication handshake and the laptop would refuse to charge.
  • Bench tested on actual hardware: We ran the AA-PBTN6QB replacement through full charge and discharge cycles on NP900X5N hardware. The BMS completed handshake on first connection, charge current stepped down correctly at the 80% and 95% thresholds, and the cell held stable voltage through a CPU-plus-display load draw.
  • First-cycle calibration after install: After fitting the new cell, run one full discharge to hibernate-cutoff, then charge uninterrupted to 100%. This resets the BIOS battery learn cycle. Without it, Windows will report inflated or near-zero capacity until the fuel gauge IC has mapped the new cell's actual charge curve.

Why the NP900X5N shuts down between 20–30% after a battery swap

This happens because the fuel gauge IC still holds the discharge curve of the old, degraded cell. Under combined CPU and display load, the new cell's voltage reads lower than the IC expects at that state-of-charge, and the BIOS triggers an emergency shutdown to protect the system. The fix is a full learn cycle: discharge to hibernate-cutoff without interruption, then charge to 100% with the lid closed. After two or three complete cycles, the IC recalibrates against the new cell's actual voltage curve and the early shutdowns stop.

BIOS reporting battery health as "poor" or "replace now" immediately after install

The Series 9 BIOS reads health status from EEPROM data stored on the battery's protection circuit board — not from the cell's current capacity. A brand-new replacement cell carries factory EEPROM values that the BIOS hasn't yet validated against actual charge cycles, so it flags the battery as unknown or poor. Run the Samsung Battery Manager utility and initiate a battery learn cycle. After one complete discharge-to-hibernate and uninterrupted charge-to-100%, the BIOS rewrites the health register and the warning clears. If Samsung Battery Manager is not installed, download it directly from Samsung's support page for the NP900X5N.

Compatible Models

NP900X5N-K07HK NT900X5N-K29S NT900X5N-K59W NT900X5N-L38W NT900X5N-L37L NT900X5N-K39W NT900X5N-L38D NT900X5N-L78SS NP900X5N-K03HK NT900X5N-K38 NT900X5N-K79W NT900X5N-L58L NP900X5N-L01US NT900X5N-K58L NT900X5N-K58S NT900X5N-L38M NT900X5N-X516 NT900X5N-X78L NT900X5N-X58W NT900X5N-K38BB NT900X5N-KSF NT900X5N-L58SS NP900X5N-K01 NT900X5N-K37W NT900X5N-K58W NT900X5N-L38MW NT900X5N-X58WS NT900X5N-K716 NT900X5N-K38W NT900X5N-L34M NT900X5N-L59S NP900X5N-K07 NT900X5N-K201C NT900X5N-K59L NT900X5N-L38T NT900X5N-X716S NT900X5N-L78S NT900X5N-K39S NT900X5N-L38BB NT900X5N-L716 NP900X5N-K01HK NT900X5N-K37S NT900X5N-K78A NT900X5N-L58BB Notebook 9 NP900X5N NT900X5N-K34W NT900X5N-K58R NT900X5N-L38L NT900X5N-L79W NP900X5N NT900X5N-X58 NT900X5N-K38A NT900X5N-K79WS NT900X5N-L58R NP900X5N-K01US NT900X5N-K58A NT900X5N-K58SS NT900X5N-L38MT NT900X5N-X516S NP900X5N-X01US NT900X5N-X715 NT900X5N-K38S NT900X5N-L34D NT900X5N-L58WS NP900X5N-K03 NT900X5N NT900X5N-K59 NT900X5N-L38S NT900X5N-X716 NT900X5N-L58W NT900X5N-K39 NT900X5N-L38 NT900X5N-L59SS NT900X5N-K02 NT900X5N-K04 NT900X5N-K03

Replaces Part Numbers

AA-PBTN6QB

Technical Specifications

Voltage11.5V
Amp Hours5700mAh
Capacity5700mAh
Rate65.55Wh
Net Weight276g /9.74 oz
Gross Weight536g /18.91 oz
Approximate Weight536g /18.91 oz
Dimension 267.80 x 117.20 x 5.80mm

Product Highlights

  • Brand: Samsung
  • 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

My NP900X5N shows the replacement battery as 0% or "unknown" in Windows — is it dead on arrival?

It is not dead. The Windows fuel gauge IC is reading EEPROM data from the old cell's charge history, not the new cell's actual state. Discharge the laptop fully until it hibernates, then charge uninterrupted to 100% without removing the charger. After that single complete cycle, the gauge IC maps the new cell and the percentage reads correctly.

The system info panel shows a different Wh rating than the 65.55Wh listed for this battery — is something wrong?

Nothing is wrong with the cell. The Wh figure shown in Windows Device Manager or Samsung Battery Manager pulls from the EEPROM-stored design capacity on the protection circuit board, which may reflect the OEM cell's rated chemistry rather than the replacement cell's actual measured capacity. The 65.55Wh figure in the product data is the correct value for this cell. After two full calibration cycles, the reported figure will align more closely with the actual cell.

Why does the NP900X5N charge stop at 80% and refuse to go higher?

This is a BIOS-controlled charge limit, not a fault with the replacement cell. Samsung's Series 9 firmware includes a battery lifespan mode that caps charging at 80% when enabled. Open Samsung Battery Manager, navigate to the battery life extender or charge limit setting, and switch it from "Maximum Battery Life" to "Maximum Battery Life Off" or "Fully Charged." The charge ceiling will immediately rise to 100%.

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