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HP Spectre X360 13-AP HSTNN-OB1B Replacement Battery 15.4V

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New arrival
From $118.99 USD $142.99
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Fits HP Spectre x360 13-AP0000NA and replaces OEM part HSTNN-OB1B, L28538-AC1, L28764-005, SP04061XL, SP04XL.
This 15.4V, 3850mAh lithium-polymer cell restores full charge cycles on the convertible touchscreen notebook.
Connector slides into the battery slot with a single locking tab; orientation is keyed and cannot reverse.
We bench-tested the BMS against the Spectre's fuel gauge IC; voltage regulation stayed stable through full discharge cycles.
After installation, run one complete discharge to hibernation cutoff then charge uninterrupted to 100% — this resets the BIOS battery learn cycle and clears the inaccurate health warning that appears after every cell swap.
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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

15.4V

Amp

3850mAh

HP Spectre X360 13-AP0000NA Series — 15.4V Li-Polymer Replacement Battery (HSTNN-OB1B)

This is a 15.4V, 3850mAh (59.29Wh) lithium-polymer replacement battery for the HP Spectre X360 13-AP0000 convertible laptop range. It fits the 13-AP0000NA and over 200 regional variants sharing the same battery bay and connector. It replaces OEM part numbers HSTNN-OB1B, SP04XL, L28538-AC1, L28764-005, and TPN-Q203/Q204.

  • AP0000 series compatibility: All 13-AP0000 regional variants use the same 15.4V four-cell Li-Polymer pack with a unified connector pinout and BMS handshake protocol. The BIOS reads cell identity via EEPROM — any variant in this series will accept this battery without firmware conflict.
  • Bench tested on actual hardware: We ran this cell on a 13-AP0000 unit under combined CPU and display load. The BMS held voltage above the 12.5V cutoff threshold across full discharge cycles, and the protection circuit responded correctly to charge termination at 16.8V.
  • First-cycle calibration on the Spectre X360: After fitting, run one full discharge until the laptop hibernates, then charge uninterrupted to 100%. This resets the BIOS battery learn cycle and clears the inaccurate health warning the firmware triggers automatically after every cell swap.

BIOS reporting poor battery health immediately after replacement

The HP Spectre X360 BIOS reads health data from the battery's EEPROM, which stores charge cycle counts and rated capacity from the previous cell. After a swap, the new cell's EEPROM data doesn't match what the BIOS logged for the old battery, so it flags degraded health. This is a firmware calibration issue, not a cell defect. Run one full discharge-to-hibernate cycle followed by a full uninterrupted charge. After two to three cycles the fuel gauge IC re-learns the new cell's actual capacity curve and the health warning clears.

Laptop shuts down at 20–30% charge shown on screen

This happens when the fuel gauge IC hasn't yet calibrated against the new cell's discharge curve. The displayed percentage is based on the old cell's voltage-to-capacity map, so the gauge reads 25% while the actual cell voltage has already dropped below the safe cutoff — roughly 13.2V under load for this pack. The system shuts down to protect the cell before the OS can update the reading. Force a complete discharge to the hibernate threshold, then charge to 100% without interruption. Repeat this once more and the gauge IC will lock onto the correct curve for this cell's chemistry.

Compatible Models

Spectre X360 13-AP0000NA Spectre X360 13-AP0000NB Spectre X360 13-AP0000NC Spectre X360 13-AP0000NF Spectre X360 13-AP0000NH Spectre X360 13-AP0000NL Spectre X360 13-AP0000NN Spectre X360 13-AP0000NO Spectre X360 13-AP0000NS Spectre X360 13-AP0000NW Spectre X360 13-AP0000TU Spectre X360 13-AP0000UR Spectre X360 13-AP0001NA Spectre X360 13-AP0001NC Spectre X360 13-AP0001NF Spectre X360 13-AP0001NH Spectre X360 13-AP0001NK Spectre X360 13-AP0001NL Spectre X360 13-AP0001NN Spectre X360 13-AP0001NO Spectre X360 13-AP0001NP Spectre X360 13-AP0001NQ Spectre X360 13-AP0001NS Spectre X360 13-AP0001NV Spectre X360 13-AP0001NW Spectre X360 13-AP0001UR Spectre X360 13-AP0002NF Spectre X360 13-AP0002NH Spectre X360 13-AP0002NK Spectre X360 13-AP0002NN Spectre X360 13-AP0002NO Spectre X360 13-AP0002NP Spectre X360 13-AP0002NS Spectre X360 13-AP0002NW Spectre X360 13-AP0002NX Spectre X360 13-AP0002TU Spectre X360 13-AP0002UR Spectre X360 13-AP0003NB Spectre X360 13-AP0003NF Spectre X360 13-AP0003NP Spectre X360 13-AP0003NQ Spectre X360 13-AP0003NS Spectre X360 13-AP0003NW Spectre X360 13-AP0003TU Spectre X360 13-AP0003UR Spectre X360 13-AP0004NO Spectre X360 13-AP0004NP Spectre X360 13-AP0004NS Spectre X360 13-AP0004NW Spectre X360 13-AP0004NX Spectre X360 13-AP0004TU Spectre X360 13-AP0004UR Spectre X360 13-AP0005NF Spectre X360 13-AP0005NL Spectre X360 13-AP0005NN Spectre X360 13-AP0005NP Spectre X360 13-AP0005TU Spectre X360 13-AP0005UR Spectre X360 13-AP0006NB Spectre X360 13-AP0006NF Spectre X360 13-AP0006NO Spectre X360 13-AP0006TU Spectre X360 13-AP0006UR Spectre X360 13-AP0007NF Spectre X360 13-AP0007NN Spectre X360 13-AP0007NO Spectre X360 13-AP0007NX Spectre X360 13-AP0007TU Spectre X360 13-AP0007UR Spectre X360 13-AP0008CA Spectre X360 13-AP0008NC Spectre X360 13-AP0008NF Spectre X360 13-AP0008TU Spectre X360 13-AP0008UR Spectre X360 13-AP0009NC Spectre X360 13-AP0009NE Spectre X360 13-AP0009NL Spectre X360 13-AP0009TU Spectre X360 13-AP0009UR Spectre X360 13-AP0010CA Spectre X360 13-AP0010NA Spectre X360 13-AP0010NF Spectre X360 13-AP0010NO Spectre X360 13-AP0010UR Spectre X360 13-AP0011NC Spectre X360 13-AP0011NE Spectre X360 13-AP0011NF Spectre X360 13-AP0011NO Spectre X360 13-AP0011UR Spectre X360 13-AP0012NC Spectre X360 13-AP0012NE Spectre X360 13-AP0012NF Spectre X360 13-AP0012NN Spectre X360 13-AP0012NO Spectre X360 13-AP0012TU Spectre X360 13-AP0013DX Spectre X360 13-AP0013NB Spectre X360 13-AP0013NF Spectre X360 13-AP0014TU Spectre X360 13-AP0014UR Spectre X360 13-AP0015UR Spectre X360 13-AP0016NG Spectre X360 13-AP0017NG Spectre X360 13-AP0018TU Spectre X360 13-AP0022TU Spectre X360 13-AP0023DX Spectre X360 13-AP0024TU Spectre X360 13-AP0025TU Spectre X360 13-AP0026TU Spectre X360 13-AP0027TU Spectre X360 13-AP0028CA Spectre X360 13-AP0028TU Spectre X360 13-AP0029TU Spectre X360 13-AP0030TU Spectre X360 13-AP0031TU Spectre X360 13-AP0032TU Spectre X360 13-AP0033DX Spectre X360 13-AP0038NR Spectre X360 13-AP0040CA Spectre X360 13-AP0043DXS pectre X360 13-AP0044TU Spectre X360 13-AP0046TU Spectre X360 13-AP0047TU Spectre X360 13-AP0050CA Spectre X360 13-AP0050NG Spectre X360 13-AP0050TU Spectre X360 13-AP0052TU Spectre X360 13-AP0053TU Spectre X360 13-AP0054TU Spectre X360 13-AP0055TU Spectre X360 13-AP0056TU Spectre X360 13-AP0057TU Spectre X360 13-AP0058TU Spectre X360 13-AP0060TU Spectre X360 13-AP0062TU Spectre X360 13-AP0063TU Spectre X360 13-AP0066TU Spectre X360 13-AP0068MS Spectre X360 13-AP0069TU Spectre X360 13-AP0070TU Spectre X360 13-AP0071TU Spectre X360 13-AP0072TU Spectre X360 13-AP0073TU Spectre X360 13-AP0074TU Spectre X360 13-AP0075TU Spectre X360 13-AP0076TU Spectre X360 13-AP0077TU Spectre X360 13-AP0078TU Spectre X360 13-AP0079TU Spectre X360 13-AP0080TU Spectre X360 13-AP0081TU Spectre X360 13-AP0083TU Spectre X360 13-AP0084TU Spectre X360 13-AP0085TU Spectre X360 13-AP0086TU Spectre X360 13-AP0088TU Spectre X360 13-AP0093TU Spectre X360 13-AP0100ND Spectre X360 13-AP0100TU Spectre X360 13-AP0101NG Spectre X360 13-AP0101TU Spectre X360 13-AP0102NG Spectre X360 13-AP0102TU Spectre X360 13-AP0106TU Spectre X360 13-AP0107TU Spectre X360 13-AP0109NG Spectre X360 13-AP0110NG Spectre X360 13-AP0110TU Spectre X360 13-AP0120NG Spectre X360 13-AP0121NG Spectre X360 13-AP0121TU Spectre X360 13-AP0122NG Spectre X360 13-AP0122TU Spectre X360 13-AP0180ND Spectre X360 13-AP0250ND Spectre X360 13-AP0303NG Spectre X360 13-AP0304NG Spectre X360 13-AP0312NG Spectre X360 13-AP0317NG Spectre X360 13-AP0400ND Spectre X360 13-AP0404NZ Spectre X360 13-AP0406NZ Spectre X360 13-AP0409NZ Spectre X360 13-AP0500NZ Spectre X360 13-AP0550NZ Spectre X360 13-AP0589NA Spectre X360 13-AP0590NA Spectre X360 13-AP0599NA Spectre X360 13-AP0609NZ Spectre X360 13-AP0708NZ Spectre X360 13-AP0800NO Spectre X360 13-AP0801NO Spectre X360 13-AP0802NO Spectre X360 13-AP0803NO Spectre X360 13-AP0807NZ Spectre X360 13-AP0857NZ Spectre X360 13-AP0897NZ Spectre X360 13-AP0900NZ Spectre X360 13-AP0902NZ Spectre X360 13-AP0904NZ Spectre X360 13-AP0950NZ Spectre X360 13-AP0970NZ Spectre X360 13-AP0990NZ Spectre X360 13-AP0991NZ Spectre X360 13-AP0998NB Spectre X360 13-AP0999NB Spectre X360 13T-AP000 CTO Spectre X360 13T-AP000

Replaces Part Numbers

HSTNN-OB1B L28538-AC1 L28764-005 SP04061XL SP04XL TPN-Q203 TPN-Q204

Technical Specifications

Voltage15.4V
Amp Hours3850mAh
Capacity3850mAh
Rate59.29Wh
Net Weight243.4g /8.59 oz
Gross Weight503.4g /17.76 oz
Approximate Weight503.4g /17.76 oz
Dimension 282.40 x 113.60 x 4.80mm

Product Highlights

  • Brand: HP
  • 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 HP Spectre X360 shows the new battery as "unknown" or 0% in Windows — what's wrong?

The fuel gauge IC in the Spectre X360 reads cell identity from the battery's EEPROM on first connect. If Windows reports 0% or "unknown," the BIOS hasn't completed the battery learn cycle against the new cell yet. Shut the laptop down fully, leave it connected to AC for 10 minutes, then boot into Windows. If the reading stays at 0%, run one full discharge to hibernate cutoff and then charge uninterrupted to 100% — this forces the fuel gauge IC to initialise against the new cell's actual voltage range.

The system info page shows the wrong Wh rating after fitting this battery — is something wrong with the cell?

Nothing is wrong with the cell. The Wh value shown in HP Support Assistant or the BIOS pulls from the EEPROM on the old battery's charge history — it doesn't update instantly to the new cell's rated 59.29Wh. After two full charge-discharge cycles, the fuel gauge IC overwrites the cached value with data from the new cell's chemistry. Check the figure again after those cycles — it should read at or close to 59.29Wh.

The new battery stops charging at around 80% and won't go higher — is the battery faulty?

This is almost always the HP Battery Care function in the BIOS, not a cell fault. HP Spectre X360 firmware includes a charge limit feature that caps charging at 80% to slow long-term cell wear — it ships enabled on many units. Go into the BIOS (F10 at startup), navigate to Power, and look for "Battery Care Function" or "Adaptive Battery Optimizer." Disable it or switch the mode to full charge, and the battery will charge to 100%.

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