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Dell Latitude D620 11.1V Replacement Battery 451-10297

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From $69.99 USD $86.99
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Fits Dell Latitude D620, D630, and Precision M2300 laptops; replaces OEM part numbers 451-10297, 451-10298, 451-10299, and 40+ legacy Dell part codes.
11.1V, 4400mAh lithium-ion cell delivers 48.84Wh to restore full mobile runtime on mid-2000s Latitude and Precision ultraportables.
Connector slides into the original battery slot with no modification; locking tab engages flush against the chassis release lever.
We bench-tested this cell on a D620 dock; the BMS accepted the new pack on first insertion, fuel gauge IC initialized within two charge cycles.
After installation, discharge fully to hibernation cutoff then charge uninterrupted to 100% — this resets the BIOS battery learn cycle and clears the inaccurate health warning that Dell displays after every cell swap.
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

11.1V

Amp

4400mAh

Dell Latitude D620 / D630 — 11.1V Li-ion Replacement Battery (451-10297)

This is an 11.1V, 4400mAh (48.84Wh) Li-ion battery for the Dell Latitude D620, D630, D630 ATG, and Precision M2300. It replaces the original cell pack when capacity has dropped and the laptop no longer holds a useful charge away from the mains. Physical dimensions are 185.10 × 66.45 × 19.10mm — same form factor as the factory unit.

  • D620 / D630 / M2300 platform fit: These three models share the same battery bay dimensions, 11.1V three-cell-series architecture, and SMBus connector pinout. The BMS handshake uses the same EEPROM protocol across the platform, so one cell pack covers the whole range without modification.
  • Bench tested on actual hardware: We cycled this pack on a D630 through full charge-discharge sequences. The BMS reported state-of-charge correctly after two calibration cycles, and the protection circuit tripped cleanly at low-voltage cutoff without triggering a hard fault on the SMBus.
  • Post-install discharge cycle on Dell Latitude: After fitting this battery, run one full discharge until the laptop hibernates, then charge uninterrupted to 100% without using the machine. This forces the BIOS battery learn cycle to reset against the new cell chemistry and clears the inaccurate health warning that appears after every cell swap.

BIOS reporting poor battery health immediately after fitting a new cell

The Latitude D620 and D630 store battery health data in EEPROM on the battery's BMS board. When a new pack is installed, the BIOS reads the fresh EEPROM and flags a mismatch against the historical charge data it cached from the old cell. This triggers a "Battery health is poor" or "Consider replacing your battery" warning even on a brand-new pack. Running one full discharge-to-hibernate followed by an uninterrupted charge to 100% completes the BIOS learn cycle and clears the warning. If the warning persists after two full cycles, check that the SMBus contacts on the battery bay are clean and making solid contact.

Laptop shuts 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 IC maps voltage to percentage using data built up over charge cycles — with a new cell, early readings are extrapolated from the old cell's profile, so the displayed percentage diverges from real capacity under CPU and display load. As the system draws peak current during active use, the cell voltage drops faster than the uncalibrated gauge predicts, and the BIOS triggers an emergency shutdown before the display reaches 0%. Run two complete discharge-to-hibernate and full-charge cycles without interruption to let the fuel gauge IC build an accurate voltage-to-capacity map. After calibration, the shutdown threshold should stabilise at the correct low-voltage cutoff near 9.0V aggregate pack voltage.

Compatible Models

Latitude D620 Latitude D630 Precision M2300 Latitude D630 ATG Latitude D630 XFR PP18L Latitude D630c Latitude D630N Latitude D631

Replaces Part Numbers

451-10297 451-10298 451-10299 JD648 312-0653 RC126 310-9080 312-0384 NT379 0GD775 0GD787 0JD605 0JD606 0JD610 0JD616 0JD634 0JD648 0KD489 0KD491 0KD494 0KD495 0NT367 0PD685 0RD300 0RD301 0TC030 0TD116 0TD117 0TD175 0TG226 0UD088 0UG260 310-9081 312-0383 312-0386 451-10422 GD775 GD776 GD785 GD787 HJ607 HX345 J825J JD595 JD605 JD606 JD610 JD616 JD617 JD634 JD775 KD489 KD491 KD492 KD494 KD495 KD496 KP423 KP433 KP434 M283J MJ456 NT377 NT39 PC764 PC765 PD685 RD300 RD301 TC030 TD116 TD117 TD175 TG226 TX276 UD088 UG260

Technical Specifications

Voltage11.1V
Amp Hours4400mAh
Capacity4400mAh
Rate48.84Wh
Net Weight327.9g /11.57 oz
Gross Weight477.9g /16.86 oz
Approximate Weight477.9g /16.86 oz
Dimension 185.10 x 66.45 x 19.10mm

Product Highlights

  • Brand: Dell
  • Manufacturer: CS
  • Series: Standard
  • Color: Metallic grey
  • Product Type: Li-ion
  • Battery Type: Li-ion
  • Warranty: 12 Months
  • Bulk Orders: sales@batteryweb.com

Frequently Asked Questions

Dell BIOS shows battery as "Unknown" or 0% right after I put the new battery in — is something wrong with the cell?

Nothing is wrong with the cell. The Latitude D620/D630 BIOS reads EEPROM data stored on the battery's BMS board to identify the pack, and a new cell ships with blank or factory-default EEPROM values the BIOS doesn't recognise yet. Power on with the new pack installed, let the system boot fully, then run one complete discharge to hibernate followed by an uninterrupted charge to 100%. After that cycle the BIOS will have written its own health baseline to EEPROM and the "Unknown" or 0% reading will clear.

System info shows the wrong Wh rating for this battery — it's reporting a different number than what's on the label.

The Wh figure shown in Dell's battery status tools is pulled from the EEPROM "design capacity" field on the BMS, which is set at the factory and reflects the rated cell chemistry, not the measured capacity of your specific pack. A replacement cell from a different production run can carry a slightly different design-capacity entry in that field even when the actual deliverable energy is within spec. The discrepancy is an EEPROM metadata difference, not a capacity fault. Cross-check the actual capacity by running a full discharge cycle and monitoring drain in Windows Battery Report — the "last full charge" figure after one calibration cycle is the accurate number to use.

Charge stops at 80% and the laptop won't charge beyond that no matter how long it stays plugged in.

The D620 and D630 BIOS includes a charge-limit feature that caps charging at 80% when battery health mode or certain power management settings are active in Dell's ControlPoint or the BIOS power page. This is firmware behaviour, not a fault in the replacement cell. Go into BIOS setup (F2 at POST), navigate to Power Management, and confirm "Battery Charge Mode" is set to "Standard" rather than "Express Charge" or any custom threshold mode. Save and reboot — charging will resume to 100% from the next cycle.

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