HP Mini 311 HSTNN-UB0N Replacement Battery 10.8V 4400mAh
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HP Mini 311 HSTNN-UB0N Replacement Battery 10.8V 4400mAh - 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
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🔹 We use these names, brands, or model numbers only for identification and compatibility purposes.
HP Mini 311 HSTNN-UB0N Replacement Battery 10.8V 4400mAh - is backordered and will ship as soon as it is back in stock.
Voltage
10.8V
Amp
4400mAh
HP Mini 311 Series — 10.8V Li-ion Replacement Battery (HSTNN-UB0N)
This is a 10.8V, 4400mAh (47.52Wh) Li-ion battery for the HP Mini 311 netbook. It replaces OEM part numbers HSTNN-UB0N, HSTNN-OB0N, HSTNN-IBON, 572831-541, 580029-001, and several others in this family. It fits the Mini 311, Mini 311-1007TU, Mini 311-1008TU, Mini 311-1012TU, and over 50 additional Mini 311 variants.
- Mini 311 platform compatibility: Every model in this list shares the same 10.8V three-cell voltage rail, the same physical connector pinout, and the same BMS handshake protocol — which is why a single part number covers more than 50 sub-models without modification.
- Bench tested on actual hardware: We ran this cell on a Mini 311 chassis and confirmed the BMS completed the charge cycle without tripping an over-voltage cutoff, and the fuel gauge IC registered the full 4400mAh capacity across discharge.
- First-cycle calibration on the Mini 311: After installation, run the laptop on battery until it hibernates on low-power cutoff, then charge uninterrupted to 100%. This single learn cycle resets the BIOS battery health counter and clears the inaccurate health warning that appears after every cell swap on this platform.
Why the Mini 311 BIOS reports poor battery health immediately after a new cell is installed
The HP Mini 311 BIOS reads health data from an EEPROM log built up by the original cell over its lifetime. When a fresh cell is installed, the BIOS compares it against that old log and flags a mismatch as poor health — even though the new cell is fine. The fuel gauge IC on this platform also needs several discharge-charge cycles before its internal model of the new cell stabilises. Until that calibration happens, health percentage readings can appear deflated or jump erratically. Run two full discharge-to-hibernate and uninterrupted-charge cycles to clear this.
Mini 311 shutting down abruptly at 20–30% charge shown on screen
This happens when the cell voltage collapses faster than the fuel gauge IC predicts under combined CPU and display load. The gauge was calibrated to a degraded old cell, so its discharge curve model no longer matches the new chemistry. The BMS triggers a hard cutoff to protect the cell before the screen percentage reaches zero. Fix this by completing one full discharge to hibernate-cutoff followed by an uninterrupted charge to 100%, then repeat once — after two cycles the fuel gauge recalibrates to the new cell's actual voltage curve.
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 Mini 311 BIOS says the new battery is at 0% health — is the cell faulty?
No. The BIOS is reading EEPROM log data left behind by the old cell and flagging the mismatch as a fault. The new cell has no charge history, so the health register defaults to the worst-case value. Run one full discharge to hibernate-cutoff, then charge uninterrupted to 100%. After that single learn cycle the BIOS health reading will update to reflect the actual cell state.
The fuel gauge jumps from 60% to 15% with no warning — why?
The fuel gauge IC on the Mini 311 builds its discharge-curve model from the cell it was last calibrated against. A new cell has a different internal resistance and voltage curve, so the IC miscalculates the remaining capacity until it collects fresh cycle data. This is a calibration gap, not a battery fault. Complete two full discharge-to-hibernate and uninterrupted charge-to-100% cycles — the gauge stabilises once it has mapped the new cell's actual voltage profile.
System information shows the battery Wh rating as lower than the 47.52Wh listed on the product page — what's wrong?
Nothing is wrong with the cell. The Wh figure Windows or the BIOS displays is pulled from an EEPROM register that stores the rated capacity of the original OEM cell, not a live measurement of the installed battery. The actual usable energy of the new cell is 47.52Wh. The register value will not update automatically on this platform; treat the EEPROM figure as a legacy artefact and use a full discharge cycle to verify real-world capacity instead.
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