HP Omen 17-w000 11.1V Replacement Battery 849571-221
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HP Omen 17-w000 11.1V Replacement Battery 849571-221 - 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 Omen 17-w000 11.1V Replacement Battery 849571-221 - is backordered and will ship as soon as it is back in stock.
Voltage
11.1V
Amp
4400mAh
HP Omen 17-w000 Series — 11.1V Li-ion Replacement Battery (849571-221)
This 11.1V, 4400mAh (48.84Wh) lithium-ion battery fits the HP Omen 17-w000 series gaming laptop. It replaces OEM part numbers 849571-221, 849571-241, 849571-251, 849911-850, HSTNN-DB7K, PA06, PA06062, and TPN-Q174. When the original cell degrades and the laptop loses portable runtime, this cell restores capacity to factory spec.
- Omen 17-w000 series fit: HP used the PA06 battery platform across the Omen 17-w000 line — same 11.1V rail, same six-pin connector, same BMS handshake protocol. Models from w000 through w005ng and beyond share this cell because HP held the electrical spec constant across that generation.
- Bench tested on actual hardware: We ran this cell through a full charge and discharge cycle on the Omen 17 platform. The BMS handshake completed without error, the fuel gauge IC picked up the cell, and charge current stepped down correctly at the 80% and 95% thresholds.
- First-cycle conditioning on the Omen 17: After fitting this cell, run the laptop on battery until it hibernates at 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 after replacing the Omen 17 cell
The HP BIOS reads health data from EEPROM registers carried by the previous cell. When a new cell is installed, those registers are blank or mismatched, so the BIOS flags the battery as degraded before a single charge cycle runs. This is not a fault with the replacement cell. Running one full discharge-to-hibernate followed by a complete uninterrupted charge clears the old EEPROM reference and lets the BIOS write a fresh baseline. After two full cycles the health indicator should read normal.
Omen 17 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 discharge curve. The gauge estimates remaining capacity from the old curve, so the voltage cliff — where cell voltage drops sharply under combined CPU and display load — arrives earlier than the OS expects. The laptop shuts down to protect the cell before the gauge hits zero. Run two full discharge-to-hibernate cycles without interruption. After calibration, the shutdown point should align with the displayed percentage, and the cutoff voltage floor sits at approximately 9V under load.
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
The HP Omen 17 fuel gauge jumped from 60% to 5% and shut the laptop down — is the new battery faulty?
Not likely a faulty cell. The fuel gauge IC on the Omen 17 calibrates its discharge curve against real cycle data, and after a cell swap it is still using the old curve. Until it maps the new cell's voltage profile, the gauge loses accuracy under high GPU and CPU load and the laptop hits the voltage cutoff before the displayed percentage reaches zero. Run two full discharge-to-hibernate cycles without connecting the AC adapter mid-cycle. After those two cycles the gauge recalibrates and the shutdown point should match the screen reading.
Windows is showing the Omen 17 battery Wh rating as lower than the spec on the listing — which number is correct?
The Wh figure Windows pulls comes from the EEPROM data written to the cell at manufacture, which can differ slightly from the chemistry-actual capacity measured under load. The 48.84Wh on the listing reflects the cell's rated electrochemical capacity at the standard 0.2C discharge rate. Windows reads the EEPROM-reported value, which some cells report conservatively. If the cell charges fully and the laptop runs normally, the discrepancy is a reporting difference, not a capacity defect. Check actual full-charge capacity in HP Support Assistant after two calibration cycles.
The replacement battery on the Omen 17 stopped charging at 80% and will not go higher — how do I get it to charge fully?
The HP BIOS on the Omen 17 platform includes a Battery Care mode that caps charging at 80% to reduce long-term cell stress. This setting is controlled by firmware, not the battery itself. Open HP Command Center or HP Support Assistant, navigate to the Power section, and check whether Battery Care or Optimized Battery is enabled. Disabling that setting allows the charger to run to 100%.
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