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HP Mini 311 Replacement Battery HSTNN-UB0N 10.8V 6600mAh

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From $121.99 USD $146.99
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Fits HP Mini 311 netbooks with original part numbers HSTNN-UB0N, 572831-541, or 580029-001.
10.8V and 6600mAh capacity restores full charge storage to the Mini 311's portable computing workload.
Connector slides straight into the battery bay slot with locking tab on the left edge.
We bench-tested this cell against a worn original; BMS engaged charge protection at 4.2V per cell without delay.
After installation, run one full discharge to hibernation shutdown then charge uninterrupted to 100% — this resets the BIOS battery learn cycle and clears inaccurate health warnings that appear after every cell swap.
Delivery time

This product ships directly from our Manufacturer's Warehouse and is usually delivered within 7 – 10 business days to your doorstep.

Discount: As a thank you for your patience, enjoy 5% off on your order
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Fresh Battery, Worth the Wait

To provide the highest-quality replacement battery, we ship this battery directly from the manufacturer rather than from aging warehouse inventory. This means delivery may take a little longer, but it helps ensure you receive a fresh battery with better performance, a longer lifespan, and greater reliability.

Estimated delivery: 7–10 business days
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By continuing with your purchase, you acknowledge and agree to the estimated 7–10 business day delivery timeframe.
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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

🔹 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: 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.

Voltage

10.8V

Amp

6600mAh

HP Mini 311 Series — 10.8V Li-ion Replacement Battery (HSTNN-UB0N)

This is a 10.8V, 6600mAh Li-ion battery for the HP Mini 311 netbook. It replaces OEM part numbers HSTNN-UB0N, HSTNN-OB0N, HSTNN-IB0N, HSTNN-Q44C, HSTNN-Q45C, 572831-541, 580029-001, and related variants. It fits the Mini 311 base model and confirmed variants including the 311-1007TU, 311-1008TU, and 311-1012TU.

  • Mini 311 platform fit: All Mini 311 variants run the same 10.8V three-cell battery rail with an identical connector and BMS handshake protocol. The HSTNN-UB0N family covers the full production run because HP used one battery specification across all regional SKUs in this series.
  • Bench tested on actual hardware: We ran this cell on a Mini 311 unit and monitored BMS communication through a full charge and load cycle. The BMS authenticated without error codes, charge current tapered correctly at the top of the curve, and the cell held voltage under sustained CPU and display load.
  • Post-install calibration on the Mini 311: After fitting this battery, run one full discharge to the hibernate cutoff, then charge uninterrupted to 100% without unplugging. This forces the BIOS to complete a battery learn cycle against the new cell and clears the inaccurate health warning that otherwise appears after every cell swap on this platform.

Why the Mini 311 BIOS flags a new battery as poor health

The HP Mini 311 stores battery health data in the EEPROM of the original cell. When you swap to a new cell, the BIOS reads zero charge history and flags the battery as degraded or unknown — even though the new cell is at full capacity. This is a data mismatch, not a fault. Running two to three full discharge-and-charge cycles gives the fuel gauge IC enough data to recalibrate against the new cell's actual voltage curve and clear the warning.

Mini 311 shutting down at 20–30% charge shown on screen

This happens when the cell voltage drops below the BMS cutoff threshold before the fuel gauge shows empty — a voltage cliff under combined CPU and display load. The OS fuel gauge is interpolating from the old cell's discharge curve, so the percentage reading is wrong at the bottom end. It is not a fault with the new cell; it is the fuel gauge IC still running stale calibration data. After two full discharge-to-cutoff cycles, the gauge reanchors to the new cell and the shutdowns stop.

Compatible Models

Mini 311 Mini 311-1012TU Mini 311-1007TU Mini 311-1008TU Mini 311-1001TU Mini 311-1000 Mini 311-1013TU Mini 311-1019TU Mini 311-1004TU Mini 311-1025TU Mini 311-1006TU Mini 311-1000NR Mini 311-1005TU Mini 311-1021TU Mini 311-1023TU Mini 311-1022TU Mini 311-1010TU Mini 311-1014TU Mini 311-1003TU Mini 311-1002TU Mini 311-1016TU Mini 311-1018TU Mini 311-1000CA Mini 311-1009TU Mini 311-1020TU Mini 311-1003XX Mini 311-1011TU Mini 311-1026TU Mini 311-1024TU Mini 311-1017TU Mini 311C Mini 311C-1000 Mini 311C-1000SO Mini 311C-1010EH Mini 311C-1010EJ Mini 311C-1010EN Mini 311C-1010ER Mini 311C-1010SA Mini 311C-1010SB Mini 311C-1010SG Mini 311C-1010SL Mini 311C-1010SP Mini 311C-1010SS Mini 311C-1020SA Mini 311C-1030EI Mini 311C-1030EZ Mini 311C-1030SA Mini 311C-1031EV Mini 311C-1050SD Mini 311C-1070EF Mini 311C-1070SF Mini 311-1000 CTO Pavilion DM1 Pavilion DM2 Pavilion DM3 Entertainment PC

Replaces Part Numbers

HSTNN-UB0N 572831-541 580029-001 7F0994 HSTNN-OB0N HSTNN-IBON HSTNN-Q44C HSTNN-Q45C VP502AA 572831-121 572831-361 586029-001

Technical Specifications

Voltage10.8V
Amp Hours6600mAh
Capacity6600mAh
Rate71.28Wh
Net Weight423g /14.92 oz
Gross Weight603g /21.27 oz
Approximate Weight603g /21.27 oz
Dimension 205.05 x 54.16 x 42.29mm

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 Mini 311 shows the new battery as 0% or "unknown" immediately after fitting — is the cell dead?

No. The Mini 311 BIOS reads health data from the EEPROM stored on the original cell. A fresh cell has no history, so the BIOS flags it as unknown or 0% until the fuel gauge IC builds a calibration baseline. Plug in the charger, let it charge fully to 100% uninterrupted, then run one full discharge to hibernate cutoff. After that cycle the BIOS re-reads the cell correctly and the unknown status clears.

Windows is reporting the wrong Wh rating in the battery report after fitting this cell — it shows a lower design capacity than the label says.

The Wh figure in Windows Battery Report pulls from the EEPROM data embedded in the new cell, not from the physical chemistry. If the EEPROM was programmed to a different rated Wh value than the label, the report will show a mismatch. This does not affect actual charge capacity — the cell still delivers its full 6600mAh. Run two full calibration cycles and check the Full Charge Capacity line in the report; that number will converge toward 71Wh as the fuel gauge IC logs real charge data.

The Mini 311 fuel gauge is wildly inaccurate for the first few days — jumping from 60% to 10% with no warning.

The fuel gauge IC on this platform estimates remaining charge by tracking voltage curves from the previous cell. A new cell has a different voltage-to-capacity slope, so the IC's predictions are off until it collects enough real discharge data. The gauge recalibrates over two to three full discharge-and-charge cycles as it maps the actual curve. After the third cycle, charge the battery to 100% and verify the gauge holds within a few percent at the halfway point under normal screen brightness and load.

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