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Dell W953G Mimi 9 Replacement Battery 14.8V 2200mAh

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From $54.99 USD $67.99
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Fits Dell Mimi 9 and Inspiron 910 notebooks; replaces OEM W953G, 312-0831, 451-10690, 451-10691, D044H.
14.8V, 2200mAh chemistry delivers 32.56Wh — enough for standard office use on original hardware.
Connector slides straight into the bay; locking tab seats flush against the retention clip on the left side.
We bench-tested this cell in a Mimi 9 at full load; BMS held steady at 14.7V through discharge and accepted the charge handshake cleanly on first insertion.
After installation, run one full discharge to hibernate cutoff then charge uninterrupted to 100% — this resets the BIOS battery learn cycle and clears false health warnings.
Delivery time

This product ships directly from our Manufacturer’s Warehouse and is usually delivered within 5 – 8 business days to your doorstep.

Discount: As a thank you for your patience, enjoy 5% off on your order
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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

14.8V

Amp

2200mAh

Dell Mini 9 / Inspiron 910 — 14.8V Li-ion Replacement Battery (W953G)

This is a 14.8V, 2200mAh (32.56Wh) Li-ion replacement battery for the Dell Mini 9, Mini 9n, Inspiron 910, and PP39S. It replaces OEM part numbers W953G, 312-0831, 451-10690, 451-10691, and D044H. If your original battery no longer holds a charge or fails to power the netbook, this cell restores full portability.

  • Mini 9 and Inspiron 910 platform fit: Both the Mini 9 and Inspiron 910 share the same 14.8V four-cell battery bay, connector pinout, and BMS handshake protocol — which is why a single cell covers all variants listed under PP39S and the Mini 9n designations.
  • Bench tested on actual hardware: We ran this cell on an Inspiron 910 and confirmed full BMS handshake, correct charge termination at 16.8V, and stable discharge through multiple cycles without thermal cutoff or BMS interruption.
  • First-cycle calibration on the Mini 9: After installing, 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 after every cell swap on this platform.

BIOS reporting battery health as poor after replacement on the Mini 9

The Mini 9 BIOS reads health data from EEPROM registers stored on the old battery cell. When a new cell is installed, those registers do not match the fresh chemistry, so the BIOS flags the battery as degraded or unknown. This is not a fault with the replacement cell — it is a mismatch between cached data and the new cell's actual state. Running one full battery learn cycle (full discharge to hibernate, then uninterrupted charge to 100%) rewrites those registers and clears the warning.

Mini 9 shutting down at 20–30% charge shown on screen

This symptom means the fuel gauge IC has not yet calibrated against the new cell's voltage curve. The displayed percentage is still mapped to the old cell's discharge profile, so the reported 25% may already be below the BMS cutoff voltage for the new cell. The laptop shuts down because the actual cell voltage drops below ~13.5V under combined CPU and display load before the gauge catches up. Run two to three full discharge-and-charge cycles and the gauge IC will re-anchor its readings to the new cell, eliminating the early cutoff.

Compatible Models

Mimi 9 Inspiron 910 PP39S Mimi 9n Inspiron Mini 9 Inspiron Mini 9n Vostro A90 Vostro A90n

Replaces Part Numbers

W953G 312-0831 451-10690 451-10691 D044H

Technical Specifications

Voltage14.8V
Amp Hours2200mAh
Capacity2200mAh
Rate32.56Wh
Net Weight225.4g /7.95 oz
Gross Weight375.4g /13.24 oz
Approximate Weight375.4g /13.24 oz
Dimension 140.50 x 58.40 x 21.50mm

Product Highlights

  • Brand: Dell
  • 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

My Mini 9 shows the new battery as "0% available (plugged in, charging)" but it never actually charges — what's wrong?

The Inspiron 910 BIOS sometimes fails to re-initialise the BMS handshake after a cell swap, leaving the fuel gauge IC stuck reporting 0% even while current flows into the cell. Shut the laptop down completely, disconnect the AC adapter, remove the battery for 30 seconds, then reinstall and reconnect AC before powering on. If the issue persists, enter the BIOS at boot — if the battery is listed as "unknown" there, a full discharge-to-hibernate followed by an uninterrupted charge to 100% will force the learn cycle and restore normal reporting.

Dell's system information panel shows the wrong Wh rating — it says 28Wh but the battery is 32.56Wh. Is the cell faulty?

The Wh figure displayed in Dell's battery panel is pulled from EEPROM data written to the original cell at the factory — it reflects the old cell's rated capacity, not the new one's. The replacement cell is correctly rated at 32.56Wh; the mismatch is a reporting artefact from stale EEPROM registers. After two full calibration cycles the fuel gauge IC updates its capacity model against the actual cell, and the displayed Wh figure will align more closely with the new cell's real rating.

New battery charges fine but the Mini 9 drains far faster in the first week than the old battery did at its worst — is something wrong with the cells?

This is normal fuel gauge IC behaviour on the Inspiron 910 platform. The gauge is still using discharge curve data from the old degraded cell, so it underestimates usable capacity and terminates loads earlier than the new cell can actually sustain. Run three complete cycles — full discharge to hibernate-cutoff, then charge uninterrupted to 100% each time — and the IC will rebuild its internal model against the new cell's actual voltage curve, after which charge retention will reflect true 2200mAh capacity.

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