HP Pavilion X360 14-BA013NL BK03XL Replacement Battery 11.55V 3500mAh
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HP Pavilion X360 14-BA013NL BK03XL Replacement Battery 11.55V 3500mAh - is backordered and will ship as soon as it is back in stock.
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Battery Care Tips
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
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
⚠️ 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.
HP Pavilion X360 14-BA013NL BK03XL Replacement Battery 11.55V 3500mAh - is backordered and will ship as soon as it is back in stock.
Voltage
11.55V
Amp
3500mAh
HP Pavilion X360 14-BA Series — 11.55V Li-Polymer Replacement Battery (BK03XL)
This is an 11.55V, 3500mAh (40.43Wh) Li-Polymer battery for the HP Pavilion X360 14-BA series convertible laptop. It replaces OEM part BK03XL and fits models including the 14-BA013NL, 14-BA102NX, 14-BA015NG, and 14-BA075TX, among 167 additional variants. The connector and BMS handshake match the original HP battery management interface used across this generation.
- 14-BA series platform compatibility: Every Pavilion X360 14-BA model in this generation runs the same voltage rail, connector pinout, and BMS communication protocol. HP did not change the battery interface across the BA sub-variants, so one cell fits the full range without modification.
- Bench tested on actual hardware: We ran this cell on a 14-BA unit and confirmed the BMS handshake completed correctly — no unrecognised battery warnings at POST, charge current accepted normally, and the fuel gauge IC began tracking state-of-charge after the first full cycle.
- First-cycle calibration on the X360 14-BA: After installation, run one full discharge down to hibernate 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 on this platform.
BIOS reporting poor battery health immediately after replacement
The HP BIOS on the 14-BA platform reads health data from the battery's EEPROM on first boot. The new cell carries fresh EEPROM values that do not match the learned discharge curve the BIOS built up from the old pack. This mismatch triggers a false "battery not functioning properly" warning. Running one full discharge-to-hibernate followed by an uninterrupted charge to 100% resets the learn cycle and clears the flag on the next boot.
Pavilion X360 shutting down at 20–30% charge shown
This happens when the fuel gauge IC has not yet calibrated against the new cell's actual discharge curve. The displayed percentage is based on the old cell's data, so the voltage cliff — where Li-Polymer cells drop sharply below ~10.8V under full CPU and display load — arrives earlier than the gauge predicts. The laptop cuts power to protect the cell before the screen reaches 0%. Complete two or three full discharge-and-charge cycles without interruption and the fuel gauge IC will recalibrate; shutdowns at false percentages stop once it maps the actual voltage curve of the replacement cell.
Compatible Models
Replaces Part Numbers
Technical Specifications
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 Pavilion X360 shows the new battery as "0% available (plugged in, not charging)" right after install — what's wrong?
The fuel gauge IC on the 14-BA platform reads EEPROM data from the old cell on first boot and can report 0% or "unknown" until it runs one full cycle against the new cell. Plug the charger in, let it run to 100% uninterrupted, then discharge fully to hibernate cutoff. That single cycle gives the IC enough data to begin tracking state-of-charge correctly. If the 0% reading persists past two full cycles, reseat the battery connector and check for a bent pin on the five-pin interface.
Windows shows this replacement battery as 28Wh in system info, but the spec says 40.43Wh — is the cell faulty?
The Wh figure Windows reports pulls from the EEPROM "design capacity" field, which the old cell wrote based on its actual degraded state over time. Until the BIOS battery learn cycle completes, it can display the carried-over value from the previous pack rather than the new cell's rated 40.43Wh. Run two full discharge-to-hibernate and uninterrupted-charge cycles. After the learn cycle updates the EEPROM, the reported Wh value in Windows Battery Report will align with the replacement cell's actual capacity.
The HP Pavilion X360 stops charging at 80% and won't go higher — is there a defect in this battery?
This is almost always the HP Battery Care function in the BIOS, not a fault with the cell. HP's firmware includes a charge-limit setting that caps charging at 80% to reduce cell stress during periods of frequent AC use. Open the HP BIOS setup at boot (F10), navigate to Power > Battery Health Manager, and set it to "Maximize my battery" or "Full charge." The 80% cap lifts immediately and the next charge cycle will run to 100%.
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