HP Pavilion dm3 Replacement Battery 11.1V 4400mAh HSTNN-OB0L
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HP Pavilion dm3 Replacement Battery 11.1V 4400mAh HSTNN-OB0L - 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 dm3 Replacement Battery 11.1V 4400mAh HSTNN-OB0L - is backordered and will ship as soon as it is back in stock.
Voltage
11.1V
Amp
4400mAh
HP Pavilion dm3 Series — 11.1V Li-Polymer Replacement Battery (HSTNN-OB0L)
This 11.1V, 4400mAh (48.84Wh) Li-Polymer cell replaces the original battery in the HP Pavilion dm3 series, including the dm3-1001au, dm3-1014tu, dm3-1032tx, and over 145 additional configurations. It crosses to OEM part numbers HSTNN-OB0L, HSTNN-E02C, HSTNN-DB0L, HSTNN-UB0L, FD06, and 577093-001, among others. Physical dimensions match the original bay at 194.92 × 91.28 × 15.08mm.
- dm3 Series compatibility: All dm3 variants listed share the same 11.1V three-cell configuration, connector pinout, and BMS handshake protocol — which is why one cell covers the full lineup despite the range of regional SKUs and suffix variations.
- Bench tested on actual hardware: We ran this cell through full charge and load cycles on a dm3 unit, confirmed BMS communication on all pins, and verified the fuel gauge IC accepted the new cell without throwing a fault state or halting charge.
- Post-install calibration on the dm3: After fitting this cell, run one full discharge to hibernate-cutoff, then charge uninterrupted to 100%. This resets the BIOS battery learn cycle and clears the inaccurate health warning that appears in HP Support Assistant after a cell swap.
BIOS reporting poor battery health immediately after fitting a new cell
The dm3 BIOS reads health data stored in the battery's EEPROM, not just live voltage. When a new cell arrives, its EEPROM charge-cycle counter and capacity history don't match what the BIOS expects from a conditioned pack. The system flags this as degraded health even though the cell is new. Running one full discharge-to-hibernate then an uninterrupted full charge gives the BIOS enough data to update its health register and clear the warning.
dm3 shutting down abruptly while the OS still shows 20–25% remaining
This happens when the fuel gauge IC has not yet calibrated against the new cell's actual discharge curve. The IC is still using the old cell's voltage-to-capacity map, so it misreads where the voltage cliff sits under combined CPU and display load. The cell voltage drops faster than the gauge predicts, and the BMS trips the protection circuit before the OS can initiate a clean shutdown. Two to three full discharge-and-charge cycles recalibrate the IC; after that, the cutoff should track accurately down to the cell's 9.0V low-voltage protection threshold.
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
HP Support Assistant is showing the new battery as "unknown" or 0% right after install — what's causing that?
The dm3 fuel gauge IC reads EEPROM data written during the cell's initial conditioning, and a fresh replacement hasn't built up enough cycle history for the BIOS to recognise it cleanly. This isn't a fault with the cell or the connector. Do one full discharge to hibernate-cutoff, then charge uninterrupted to 100% — the BIOS battery learn cycle will complete and the gauge will return a real reading.
System info is showing the wrong Wh rating for this battery — it's listing something different from 48.84Wh. Is the cell wrong?
The Wh figure in Windows or HP Support Assistant is pulled from the EEPROM's rated-capacity field, which may reflect the OEM cell's nominal chemistry rating rather than the replacement cell's actual measured capacity. This is an EEPROM data difference, not a physical mismatch. The cell is still delivering 4400mAh at 11.1V — confirm actual capacity by running a full discharge cycle and checking the coulomb counter reading, which should settle near 48Wh.
The battery stops charging at around 80% and won't go higher — is the cell defective?
On the dm3, HP's BIOS includes a firmware-controlled charge limit that caps charging at 80% when Battery Saver or a charge-limit policy is active. Check HP Support Assistant under Power settings and disable the charge limit or "Maximize my battery health" option. If no policy is set and charge still stalls at 80%, reset the battery learn cycle by discharging fully to hibernate-cutoff, then reconnect AC power and let it charge to 100% without interruption.
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