HP Pavilion 15 UHD TE03XL Replacement Battery 11.55V 5100mAh
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HP Pavilion 15 UHD TE03XL Replacement Battery 11.55V 5100mAh - 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.
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Disclaimer
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🔹 We use these names, brands, or model numbers only for identification and compatibility purposes.
HP Pavilion 15 UHD TE03XL Replacement Battery 11.55V 5100mAh - is backordered and will ship as soon as it is back in stock.
Voltage
11.55V
Amp
5100mAh
HP Pavilion 15 UHD / OMEN 15-AX — 11.55V Li-ion Replacement Battery (TE03XL)
This is an 11.55V, 5100mAh (58.91Wh) Li-ion battery for the HP Pavilion 15 UHD, Pavilion 15-BC series, and OMEN 15-AX series laptops. It replaces OEM part TE03XL and cross-references HSTNN-UB7T, HSTNN-UB7A, and 849570-541 among others. Fits the physical bay and connector directly — no modification needed.
- Pavilion 15-BC and OMEN 15-AX compatibility: These models share a three-cell 11.55V architecture with the same 3ICP7/65/80 cell arrangement and identical BMS handshake protocol over the SMBus line. The TPN-Q173 board ID is what the BIOS queries at POST — this battery answers that query correctly.
- Bench tested on actual hardware: We ran this cell on a Pavilion 15-BC unit and monitored the SMBus communication during charge cycles. The BMS negotiated charge current correctly, reported accurate state-of-charge data to the EC, and did not trigger any abnormal cutoff events under sustained CPU and GPU load.
- First-cycle calibration on HP Pavilion platforms: After fitting this battery, run one full discharge to hibernate-cutoff, then charge uninterrupted to 100%. This forces the HP BIOS battery learn cycle to reset against the new cell and clears the inaccurate health warning that appears in HP Support Assistant after every cell swap.
Why the Pavilion 15 BIOS reports poor health immediately after replacement
The HP EC reads health data from the battery's EEPROM, which stores cycle count, design capacity, and wear flags from the previous cell. A new battery carries factory-default EEPROM values that don't match the learned profile the BIOS accumulated from the old cell. This mismatch triggers a "battery not detected" or "consider replacing your battery" flag in HP Support Assistant within the first boot. It is not a fault with the new cell — it is a calibration state. Run one full discharge-to-hibernate followed by an uninterrupted charge to 100% and the BIOS learn cycle will rewrite its stored profile against the new cell's actual data.
Pavilion 15 shutting down at 20–30% charge shown on screen
This happens when the fuel gauge IC's stored discharge curve no longer matches the cell it is measuring — a common symptom after swapping cells. The gauge predicts 20–30% remaining, but the actual cell voltage has already dropped below the load-sustain threshold under full CPU plus display draw, so the EC triggers an emergency shutdown. The fix is the same calibration cycle: discharge fully to hibernate-cutoff, then charge uninterrupted to 100% without interruption. After two to three full cycles the fuel gauge IC recalibrates its curve against the new cell and the shutdowns stop.
Compatible Models
Replaces Part Numbers
Technical Specifications
Product Highlights
- Brand: HP
- Manufacturer: CS
- Series: Standard
- Color: Black
- Product Type: Li-ion
- Battery Type: Li-ion
- Warranty: 12 Months
- Bulk Orders: sales@batteryweb.com
Frequently Asked Questions
HP Support Assistant says "battery health is poor" the day I installed the new battery — is the cell dead already?
No — this is an EEPROM mismatch, not a failed cell. The HP BIOS compares incoming battery data against the wear profile it stored from the old cell, and a fresh cell's factory EEPROM values don't match that profile. Run one full discharge to hibernate-cutoff, then charge uninterrupted to 100%. That resets the BIOS battery learn cycle and clears the warning.
Windows is showing 58Wh in Device Manager but HP Support Assistant lists a different Wh rating — which is correct?
The 58.91Wh figure in Device Manager is read directly from this battery's EEPROM and reflects the actual rated capacity of the new cell — treat that as the accurate number. HP Support Assistant sometimes pulls a cached Wh value from the previous battery's learned profile until the BIOS learn cycle completes. After one full discharge-to-hibernate and an uninterrupted charge to 100%, both readings should align at 58.91Wh.
The battery percentage on my Pavilion 15 jumps around erratically for the first few days — normal or faulty?
This is the fuel gauge IC recalibrating against the new cell chemistry. The IC uses a discharge curve built up over many cycles with the old cell; that curve is wrong for a fresh cell, so percentage readings spike and drop until it gathers enough data. Run two to three complete discharge-to-hibernate and full-charge cycles without interruption. By the third cycle the gauge IC has enough reference points to track the new cell accurately and the erratic readings stop.
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